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提交 31dfacb3 authored 作者: Noel Grandin's avatar Noel Grandin
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h2/src/main/org/h2/command/dml/MergeUsing.java
浏览文件 @ 31dfacb3
...@@ -14,7 +14,6 @@ import org.h2.api.Trigger; ...@@ -14,7 +14,6 @@ import org.h2.api.Trigger;
import org.h2.command.CommandInterface; import org.h2.command.CommandInterface;
import org.h2.command.Prepared; import org.h2.command.Prepared;
import org.h2.engine.Right; import org.h2.engine.Right;
import org.h2.engine.Session;
import org.h2.expression.ConditionAndOr; import org.h2.expression.ConditionAndOr;
import org.h2.expression.Expression; import org.h2.expression.Expression;
import org.h2.expression.ExpressionVisitor; import org.h2.expression.ExpressionVisitor;
...@@ -101,7 +100,8 @@ public class MergeUsing extends Prepared { ...@@ -101,7 +100,8 @@ public class MergeUsing extends Prepared {
private TableFilter targetTableFilter; private TableFilter targetTableFilter;
private Column[] columns; private Column[] columns;
private Column[] keys; private Column[] keys;
private final ArrayList<Expression[]> valuesExpressionList = New.arrayList(); private final ArrayList<Expression[]> valuesExpressionList = New
.arrayList();
private Query query; private Query query;
// MergeUsing fields // MergeUsing fields
...@@ -111,11 +111,11 @@ public class MergeUsing extends Prepared { ...@@ -111,11 +111,11 @@ public class MergeUsing extends Prepared {
private Delete deleteCommand; private Delete deleteCommand;
private Insert insertCommand; private Insert insertCommand;
private String queryAlias; private String queryAlias;
private int countUpdatedRows=0; private int countUpdatedRows = 0;
private Column[] sourceKeys; private Column[] sourceKeys;
private Select targetMatchQuery; private Select targetMatchQuery;
private HashMap<Value, Integer> targetRowidsRemembered = new HashMap<>(); private HashMap<Value, Integer> targetRowidsRemembered = new HashMap<>();
private int sourceQueryRowNumber= 0; private int sourceQueryRowNumber = 0;
public MergeUsing(Merge merge) { public MergeUsing(Merge merge) {
super(merge.getSession()); super(merge.getSession());
...@@ -125,19 +125,18 @@ public class MergeUsing extends Prepared { ...@@ -125,19 +125,18 @@ public class MergeUsing extends Prepared {
this.targetTableFilter = merge.getTargetTableFilter(); this.targetTableFilter = merge.getTargetTableFilter();
} }
@Override @Override
public int update() { public int update() {
// clear list of source table keys & rowids we have processed already // clear list of source table keys & rowids we have processed already
targetRowidsRemembered.clear(); targetRowidsRemembered.clear();
if(targetTableFilter!=null){ if (targetTableFilter != null) {
targetTableFilter.startQuery(session); targetTableFilter.startQuery(session);
targetTableFilter.reset(); targetTableFilter.reset();
} }
if(sourceTableFilter!=null){ if (sourceTableFilter != null) {
sourceTableFilter.startQuery(session); sourceTableFilter.startQuery(session);
sourceTableFilter.reset(); sourceTableFilter.reset();
} }
...@@ -153,49 +152,49 @@ public class MergeUsing extends Prepared { ...@@ -153,49 +152,49 @@ public class MergeUsing extends Prepared {
while (rows.next()) { while (rows.next()) {
sourceQueryRowNumber++; sourceQueryRowNumber++;
Value[] sourceRowValues = rows.currentRow(); Value[] sourceRowValues = rows.currentRow();
Row sourceRow = new RowImpl(sourceRowValues,0); Row sourceRow = new RowImpl(sourceRowValues, 0);
setCurrentRowNumber(sourceQueryRowNumber); setCurrentRowNumber(sourceQueryRowNumber);
merge(sourceRow, sourceRowValues); merge(sourceRow);
} }
rows.close(); rows.close();
targetTable.fire(session, evaluateTriggerMasks(), false); targetTable.fire(session, evaluateTriggerMasks(), false);
return countUpdatedRows; return countUpdatedRows;
} }
private int evaluateTriggerMasks() { private int evaluateTriggerMasks() {
int masks = 0; int masks = 0;
if(insertCommand!=null){ if (insertCommand != null) {
masks |= Trigger.INSERT; masks |= Trigger.INSERT;
} }
if(updateCommand!=null){ if (updateCommand != null) {
masks |= Trigger.UPDATE; masks |= Trigger.UPDATE;
} }
if(deleteCommand!=null){ if (deleteCommand != null) {
masks |= Trigger.DELETE; masks |= Trigger.DELETE;
} }
return masks; return masks;
} }
private void checkRights() { private void checkRights() {
if(insertCommand!=null){ if (insertCommand != null) {
session.getUser().checkRight(targetTable, Right.INSERT); session.getUser().checkRight(targetTable, Right.INSERT);
} }
if(updateCommand!=null){ if (updateCommand != null) {
session.getUser().checkRight(targetTable, Right.UPDATE); session.getUser().checkRight(targetTable, Right.UPDATE);
} }
if(deleteCommand!=null){ if (deleteCommand != null) {
session.getUser().checkRight(targetTable, Right.DELETE); session.getUser().checkRight(targetTable, Right.DELETE);
} }
// check the underlying tables // check the underlying tables
session.getUser().checkRight(targetTable, Right.SELECT); session.getUser().checkRight(targetTable, Right.SELECT);
session.getUser().checkRight(sourceTableFilter.getTable(), Right.SELECT); session.getUser().checkRight(sourceTableFilter.getTable(),
Right.SELECT);
} }
protected void merge(Row sourceRow, Value[] sourceRowValues) { protected void merge(Row sourceRow) {
// put the column values into the table filter // put the column values into the table filter
sourceTableFilter.set(sourceRow); sourceTableFilter.set(sourceRow);
// Is the target row there already ? // Is the target row there already ?
...@@ -204,73 +203,85 @@ public class MergeUsing extends Prepared { ...@@ -204,73 +203,85 @@ public class MergeUsing extends Prepared {
// try and perform an update // try and perform an update
int rowUpdateCount = 0; int rowUpdateCount = 0;
if(rowFound){ if (rowFound) {
if(updateCommand!=null){ if (updateCommand != null) {
rowUpdateCount += updateCommand.update(); rowUpdateCount += updateCommand.update();
} }
if(deleteCommand!=null){ if (deleteCommand != null) {
int deleteRowUpdateCount = deleteCommand.update(); int deleteRowUpdateCount = deleteCommand.update();
// under oracle rules these updates & delete combinations are allowed together // under oracle rules these updates & delete combinations are
if(rowUpdateCount==1 && deleteRowUpdateCount==1){ // allowed together
countUpdatedRows+=deleteRowUpdateCount; if (rowUpdateCount == 1 && deleteRowUpdateCount == 1) {
deleteRowUpdateCount=0; countUpdatedRows += deleteRowUpdateCount;
} deleteRowUpdateCount = 0;
else{ } else {
rowUpdateCount += deleteRowUpdateCount; rowUpdateCount += deleteRowUpdateCount;
} }
} }
} } else {
else
{
// if either updates do nothing, try an insert // if either updates do nothing, try an insert
if (rowUpdateCount == 0) { if (rowUpdateCount == 0) {
rowUpdateCount += addRowByCommandInsert(session,sourceRow); rowUpdateCount += addRowByCommandInsert(sourceRow);
} else if (rowUpdateCount != 1) { } else if (rowUpdateCount != 1) {
throw DbException.get(ErrorCode.DUPLICATE_KEY_1, "Duplicate key inserted "+rowUpdateCount+" rows at once, only 1 expected:"+targetTable.getSQL()); throw DbException.get(ErrorCode.DUPLICATE_KEY_1,
"Duplicate key inserted " + rowUpdateCount
+ " rows at once, only 1 expected:"
+ targetTable.getSQL());
} }
} }
countUpdatedRows+=rowUpdateCount; countUpdatedRows += rowUpdateCount;
} }
private boolean isTargetRowFound(){ private boolean isTargetRowFound() {
ResultInterface rows = targetMatchQuery.query(0); ResultInterface rows = targetMatchQuery.query(0);
int countTargetRowsFound = 0; int countTargetRowsFound = 0;
Value[] targetRowIdValue=null; Value[] targetRowIdValue = null;
while (rows.next()) { while (rows.next()) {
countTargetRowsFound++; countTargetRowsFound++;
targetRowIdValue = rows.currentRow(); targetRowIdValue = rows.currentRow();
// throw and exception if we have processed this _ROWID_ before... // throw and exception if we have processed this _ROWID_ before...
if(targetRowidsRemembered.containsKey(targetRowIdValue[0])){ if (targetRowidsRemembered.containsKey(targetRowIdValue[0])) {
throw DbException.get(ErrorCode.DUPLICATE_KEY_1, "Merge using ON column expression, duplicate _ROWID_ target record already updated, deleted or inserted:_ROWID_=" throw DbException.get(ErrorCode.DUPLICATE_KEY_1,
+targetRowIdValue[0].toString() "Merge using ON column expression, duplicate _ROWID_ target record already updated, deleted or inserted:_ROWID_="
+":in:"+targetTableFilter.getTable() + targetRowIdValue[0].toString() + ":in:"
+":conflicting source row number:"+targetRowidsRemembered.get(targetRowIdValue[0])); + targetTableFilter.getTable()
}else{ + ":conflicting source row number:"
// remember the source column values we have used before (they are the effective ON clause keys + targetRowidsRemembered
.get(targetRowIdValue[0]));
} else {
// remember the source column values we have used before (they
// are the effective ON clause keys
// and should not be repeated // and should not be repeated
targetRowidsRemembered.put(targetRowIdValue[0],sourceQueryRowNumber); targetRowidsRemembered.put(targetRowIdValue[0],
sourceQueryRowNumber);
} }
} }
rows.close(); rows.close();
if(countTargetRowsFound>1){ if (countTargetRowsFound > 1) {
throw DbException.get(ErrorCode.DUPLICATE_KEY_1, "Duplicate key updated "+countTargetRowsFound+" rows at once, only 1 expected:_ROWID_=" throw DbException.get(ErrorCode.DUPLICATE_KEY_1,
+targetRowIdValue[0].toString() "Duplicate key updated " + countTargetRowsFound
+":in:"+targetTableFilter.getTable() + " rows at once, only 1 expected:_ROWID_="
+":conflicting source row number:"+targetRowidsRemembered.get(targetRowIdValue[0])); + targetRowIdValue[0].toString() + ":in:"
+ targetTableFilter.getTable()
+ ":conflicting source row number:"
+ targetRowidsRemembered.get(targetRowIdValue[0]));
} }
return countTargetRowsFound>0; return countTargetRowsFound > 0;
} }
private int addRowByCommandInsert(Session session, Row sourceRow) { private int addRowByCommandInsert(Row sourceRow) {
int localCount = 0; int localCount = 0;
if(insertCommand!=null){ if (insertCommand != null) {
localCount += insertCommand.update(); localCount += insertCommand.update();
if(!isTargetRowFound()){ if (!isTargetRowFound()) {
throw DbException.get(ErrorCode.GENERAL_ERROR_1, "Expected to find key after row inserted, but none found. Insert does not match ON condition.:"+targetTable.getSQL()+":source row="+Arrays.asList(sourceRow.getValueList())); throw DbException.get(ErrorCode.GENERAL_ERROR_1,
"Expected to find key after row inserted, but none found. Insert does not match ON condition.:"
+ targetTable.getSQL() + ":source row="
+ Arrays.asList(sourceRow.getValueList()));
} }
} }
return localCount; return localCount;
...@@ -330,29 +341,35 @@ public class MergeUsing extends Prepared { ...@@ -330,29 +341,35 @@ public class MergeUsing extends Prepared {
onCondition.mapColumns(targetTableFilter, 1); onCondition.mapColumns(targetTableFilter, 1);
if (keys == null) { if (keys == null) {
HashSet<Column> targetColumns = buildColumnListFromOnCondition(targetTableFilter); HashSet<Column> targetColumns = buildColumnListFromOnCondition(
targetTableFilter);
keys = targetColumns.toArray(new Column[0]); keys = targetColumns.toArray(new Column[0]);
} }
if(keys.length==0){ if (keys.length == 0) {
throw DbException.get(ErrorCode.COLUMN_NOT_FOUND_1, throw DbException.get(ErrorCode.COLUMN_NOT_FOUND_1,
"No references to target columns found in ON clause:"+targetTableFilter.toString()); "No references to target columns found in ON clause:"
+ targetTableFilter.toString());
} }
if (sourceKeys == null) { if (sourceKeys == null) {
HashSet<Column> sourceColumns = buildColumnListFromOnCondition(sourceTableFilter); HashSet<Column> sourceColumns = buildColumnListFromOnCondition(
sourceTableFilter);
sourceKeys = sourceColumns.toArray(new Column[0]); sourceKeys = sourceColumns.toArray(new Column[0]);
} }
if(sourceKeys.length==0){ if (sourceKeys.length == 0) {
throw DbException.get(ErrorCode.COLUMN_NOT_FOUND_1, throw DbException.get(ErrorCode.COLUMN_NOT_FOUND_1,
"No references to source columns found in ON clause:"+sourceTableFilter.toString()); "No references to source columns found in ON clause:"
+ sourceTableFilter.toString());
} }
// only do the optimize now - before we have already gathered the unoptimized column data // only do the optimize now - before we have already gathered the
// unoptimized column data
onCondition = onCondition.optimize(session); onCondition = onCondition.optimize(session);
onCondition.createIndexConditions(session, sourceTableFilter); onCondition.createIndexConditions(session, sourceTableFilter);
onCondition.createIndexConditions(session, targetTableFilter); onCondition.createIndexConditions(session, targetTableFilter);
if (columns == null) { if (columns == null) {
if (valuesExpressionList.size() > 0 && valuesExpressionList.get(0).length == 0) { if (valuesExpressionList.size() > 0
&& valuesExpressionList.get(0).length == 0) {
// special case where table is used as a sequence // special case where table is used as a sequence
columns = new Column[0]; columns = new Column[0];
} else { } else {
...@@ -362,7 +379,8 @@ public class MergeUsing extends Prepared { ...@@ -362,7 +379,8 @@ public class MergeUsing extends Prepared {
if (valuesExpressionList.size() > 0) { if (valuesExpressionList.size() > 0) {
for (Expression[] expr : valuesExpressionList) { for (Expression[] expr : valuesExpressionList) {
if (expr.length != columns.length) { if (expr.length != columns.length) {
throw DbException.get(ErrorCode.COLUMN_COUNT_DOES_NOT_MATCH); throw DbException
.get(ErrorCode.COLUMN_COUNT_DOES_NOT_MATCH);
} }
for (int i = 0; i < expr.length; i++) { for (int i = 0; i < expr.length; i++) {
Expression e = expr[i]; Expression e = expr[i];
...@@ -380,26 +398,27 @@ public class MergeUsing extends Prepared { ...@@ -380,26 +398,27 @@ public class MergeUsing extends Prepared {
int embeddedStatementsCount = 0; int embeddedStatementsCount = 0;
// Prepare each of the sub-commands ready to aid in the MERGE collaboration // Prepare each of the sub-commands ready to aid in the MERGE
if(updateCommand!=null){ // collaboration
if (updateCommand != null) {
updateCommand.setSourceTableFilter(sourceTableFilter); updateCommand.setSourceTableFilter(sourceTableFilter);
updateCommand.setCondition(appendOnCondition(updateCommand)); updateCommand.setCondition(appendOnCondition(updateCommand));
updateCommand.prepare(); updateCommand.prepare();
embeddedStatementsCount++; embeddedStatementsCount++;
} }
if(deleteCommand!=null){ if (deleteCommand != null) {
deleteCommand.setSourceTableFilter(sourceTableFilter); deleteCommand.setSourceTableFilter(sourceTableFilter);
deleteCommand.setCondition(appendOnCondition(deleteCommand)); deleteCommand.setCondition(appendOnCondition(deleteCommand));
deleteCommand.prepare(); deleteCommand.prepare();
embeddedStatementsCount++; embeddedStatementsCount++;
} }
if(insertCommand!=null){ if (insertCommand != null) {
insertCommand.setSourceTableFilter(sourceTableFilter); insertCommand.setSourceTableFilter(sourceTableFilter);
insertCommand.prepare(); insertCommand.prepare();
embeddedStatementsCount++; embeddedStatementsCount++;
} }
if(embeddedStatementsCount==0){ if (embeddedStatementsCount == 0) {
throw DbException.get(ErrorCode.SYNTAX_ERROR_1, throw DbException.get(ErrorCode.SYNTAX_ERROR_1,
"At least UPDATE, DELETE or INSERT embedded statement must be supplied."); "At least UPDATE, DELETE or INSERT embedded statement must be supplied.");
} }
...@@ -413,13 +432,15 @@ public class MergeUsing extends Prepared { ...@@ -413,13 +432,15 @@ public class MergeUsing extends Prepared {
targetMatchQuery.prepare(); targetMatchQuery.prepare();
} }
private HashSet<Column> buildColumnListFromOnCondition(TableFilter anyTableFilter) { private HashSet<Column> buildColumnListFromOnCondition(
TableFilter anyTableFilter) {
HashSet<Column> filteredColumns = new HashSet<>(); HashSet<Column> filteredColumns = new HashSet<>();
HashSet<Column> columns = new HashSet<>(); HashSet<Column> columns = new HashSet<>();
ExpressionVisitor visitor = ExpressionVisitor.getColumnsVisitor(columns); ExpressionVisitor visitor = ExpressionVisitor
.getColumnsVisitor(columns);
onCondition.isEverything(visitor); onCondition.isEverything(visitor);
for(Column c: columns){ for (Column c : columns) {
if(c!=null && c.getTable()==anyTableFilter.getTable()){ if (c != null && c.getTable() == anyTableFilter.getTable()) {
filteredColumns.add(c); filteredColumns.add(c);
} }
} }
...@@ -427,17 +448,19 @@ public class MergeUsing extends Prepared { ...@@ -427,17 +448,19 @@ public class MergeUsing extends Prepared {
} }
private Expression appendOnCondition(Update updateCommand) { private Expression appendOnCondition(Update updateCommand) {
if (updateCommand.getCondition()==null){ if (updateCommand.getCondition() == null) {
return onCondition; return onCondition;
} }
return new ConditionAndOr(ConditionAndOr.AND,updateCommand.getCondition(),onCondition); return new ConditionAndOr(ConditionAndOr.AND,
updateCommand.getCondition(), onCondition);
} }
private Expression appendOnCondition(Delete deleteCommand) { private Expression appendOnCondition(Delete deleteCommand) {
if (deleteCommand.getCondition()==null){ if (deleteCommand.getCondition() == null) {
return onCondition; return onCondition;
} }
return new ConditionAndOr(ConditionAndOr.AND,deleteCommand.getCondition(),onCondition); return new ConditionAndOr(ConditionAndOr.AND,
deleteCommand.getCondition(), onCondition);
} }
public void setSourceTableFilter(TableFilter sourceTableFilter) { public void setSourceTableFilter(TableFilter sourceTableFilter) {
...@@ -456,7 +479,6 @@ public class MergeUsing extends Prepared { ...@@ -456,7 +479,6 @@ public class MergeUsing extends Prepared {
return onCondition; return onCondition;
} }
public Prepared getUpdateCommand() { public Prepared getUpdateCommand() {
return updateCommand; return updateCommand;
} }
...@@ -485,10 +507,12 @@ public class MergeUsing extends Prepared { ...@@ -485,10 +507,12 @@ public class MergeUsing extends Prepared {
this.queryAlias = alias; this.queryAlias = alias;
} }
public String getQueryAlias() { public String getQueryAlias() {
return this.queryAlias; return this.queryAlias;
} }
public Query getQuery() { public Query getQuery() {
return query; return query;
} }
......
h2/src/test/org/h2/test/db/TestMergeUsing.java
浏览文件 @ 31dfacb3
package org.h2.test.db;
/* /*
* Copyright 2004-2014 H2 Group. Multiple-Licensed under the MPL 2.0, * Copyright 2004-2014 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (http://h2database.com/html/license.html). * and the EPL 1.0 (http://h2database.com/html/license.html).
* Initial Developer: H2 Group * Initial Developer: H2 Group
*/ */
package org.h2.test.db;
import java.sql.Connection; import java.sql.Connection;
import java.sql.PreparedStatement; import java.sql.PreparedStatement;
...@@ -12,10 +12,10 @@ import java.sql.SQLException; ...@@ -12,10 +12,10 @@ import java.sql.SQLException;
import java.sql.Statement; import java.sql.Statement;
import org.h2.api.Trigger; import org.h2.api.Trigger;
import org.h2.test.TestBase; import org.h2.test.TestBase;
/** /**
* Test merge using syntax. * Test merge using syntax.
*/ */
public class TestMergeUsing extends TestBase implements Trigger { public class TestMergeUsing extends TestBase implements Trigger {
private static final String GATHER_ORDERED_RESULTS_SQL = "SELECT ID, NAME FROM PARENT ORDER BY ID ASC"; private static final String GATHER_ORDERED_RESULTS_SQL = "SELECT ID, NAME FROM PARENT ORDER BY ID ASC";
...@@ -40,199 +40,188 @@ public class TestMergeUsing extends TestBase implements Trigger { ...@@ -40,199 +40,188 @@ public class TestMergeUsing extends TestBase implements Trigger {
"CREATE TABLE PARENT(ID INT, NAME VARCHAR, PRIMARY KEY(ID) );", "CREATE TABLE PARENT(ID INT, NAME VARCHAR, PRIMARY KEY(ID) );",
"MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) ) AS S ON (P.ID = S.ID AND 1=1 AND S.ID = P.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME WHERE 2 = 2 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)", "MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) ) AS S ON (P.ID = S.ID AND 1=1 AND S.ID = P.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME WHERE 2 = 2 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2)", "SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2)", 2);
2
);
// Simple NAME updates, target table missing PK // Simple NAME updates, target table missing PK
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );", "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );",
"MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) ) AS S ON (P.ID = S.ID AND 1=1 AND S.ID = P.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE 1 = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)", "MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) ) AS S ON (P.ID = S.ID AND 1=1 AND S.ID = P.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE 1 = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(1,2)", "SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(1,2)",
2 2);
);
// No NAME updates, WHERE clause is always false, insert clause missing // No NAME updates, WHERE clause is always false, insert clause missing
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );", "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );",
"MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE 1 = 2", "MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE 1 = 2",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2)", "SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2)", 0);
0
);
// No NAME updates, no WHERE clause, insert clause missing // No NAME updates, no WHERE clause, insert clause missing
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );", "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );",
"MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID", "MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(1,2)", "SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(1,2)",
2 2);
);
// Two delete updates done, no WHERE clause, insert clause missing // Two delete updates done, no WHERE clause, insert clause missing
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );", "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );",
"MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN DELETE", "MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN DELETE",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) WHERE 1=0", "SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) WHERE 1=0",
2 2);
);
// One insert, one update one delete happens, target table missing PK // One insert, one update one delete happens, target table missing PK
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );", "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );",
"MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE P.ID = 2 DELETE WHERE P.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)", "MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE P.ID = 2 DELETE WHERE P.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)", "SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)",
3 3);
); // No updates happen: No insert defined, no update or delete happens due
// No updates happen: No insert defined, no update or delete happens due to ON condition failing always, target table missing PK // to ON condition failing always, target table missing PK
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );", "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );",
"MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) ) AS S ON (P.ID = S.ID AND 1=0) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE P.ID = 2 DELETE WHERE P.ID = 1", "MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) ) AS S ON (P.ID = S.ID AND 1=0) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE P.ID = 2 DELETE WHERE P.ID = 1",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2)", "SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2)", 0);
0
);
// One insert, one update one delete happens, target table missing PK // One insert, one update one delete happens, target table missing PK
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );"+ "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );"
"CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );", + "CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );",
"MERGE INTO PARENT AS P USING SOURCE AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE P.ID = 2 DELETE WHERE P.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)", "MERGE INTO PARENT AS P USING SOURCE AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE P.ID = 2 DELETE WHERE P.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)", "SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)",
3 3);
); // One insert, one update one delete happens, target table missing PK,
// One insert, one update one delete happens, target table missing PK, no source alias // no source alias
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );"+ "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );"
"CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );", + "CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );",
"MERGE INTO PARENT AS P USING SOURCE ON (P.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET P.NAME = SOURCE.NAME||SOURCE.ID WHERE P.ID = 2 DELETE WHERE P.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)", "MERGE INTO PARENT AS P USING SOURCE ON (P.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET P.NAME = SOURCE.NAME||SOURCE.ID WHERE P.ID = 2 DELETE WHERE P.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)", "SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)",
3 3);
); // One insert, one update one delete happens, target table missing PK,
// One insert, one update one delete happens, target table missing PK, no source or target alias // no source or target alias
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );"+ "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );"
"CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );", + "CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );",
"MERGE INTO PARENT USING SOURCE ON (PARENT.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)", "MERGE INTO PARENT USING SOURCE ON (PARENT.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)", "SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)",
3 3);
);
// Only insert clause, no update or delete clauses // Only insert clause, no update or delete clauses
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) );"+ "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) );"
"DELETE FROM PARENT;", + "DELETE FROM PARENT;",
"MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) ) AS S ON (P.ID = S.ID) WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)", "MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) ) AS S ON (P.ID = S.ID) WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3)", "SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3)", 3);
3
);
// no insert, no update, no delete clauses - essentially a no-op // no insert, no update, no delete clauses - essentially a no-op
testMergeUsingException( testMergeUsingException(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) );"+ "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) );"
"DELETE FROM PARENT;", + "DELETE FROM PARENT;",
"MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) ) AS S ON (P.ID = S.ID)", "MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) ) AS S ON (P.ID = S.ID)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) WHERE X<0", "SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) WHERE X<0",
0, 0,
"At least UPDATE, DELETE or INSERT embedded statement must be supplied." "At least UPDATE, DELETE or INSERT embedded statement must be supplied.");
); // Two updates to same row - update and delete together - emptying the
// Two updates to same row - update and delete together - emptying the parent table // parent table
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) )", "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) )",
"MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = P.NAME||S.ID WHERE P.ID = 1 DELETE WHERE P.ID = 1 AND P.NAME = 'Marcy11'", "MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = P.NAME||S.ID WHERE P.ID = 1 DELETE WHERE P.ID = 1 AND P.NAME = 'Marcy11'",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) WHERE X<0", "SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) WHERE X<0",
2 2);
);
// Duplicate source keys but different ROWID update - so no error // Duplicate source keys but different ROWID update - so no error
// SQL standard says duplicate or repeated updates of same row in same statement should cause errors - but because first row is updated, deleted (on source row 1) then inserted (on source row 2) // SQL standard says duplicate or repeated updates of same row in same
// statement should cause errors - but because first row is updated,
// deleted (on source row 1) then inserted (on source row 2)
// it's considered different - with respect to to ROWID - so no error // it's considered different - with respect to to ROWID - so no error
// One insert, one update one delete happens (on same row) , target table missing PK, no source or target alias // One insert, one update one delete happens (on same row) , target
// table missing PK, no source or target alias
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) );"+ "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) );"
"CREATE TABLE SOURCE AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );", + "CREATE TABLE SOURCE AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2) );",
"MERGE INTO PARENT USING SOURCE ON (PARENT.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)", "MERGE INTO PARENT USING SOURCE ON (PARENT.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT 1 AS ID, 'Marcy'||X||X UNION ALL SELECT 1 AS ID, 'Marcy2'", "SELECT 1 AS ID, 'Marcy'||X||X UNION ALL SELECT 1 AS ID, 'Marcy2'",
2 2);
);
// Multiple update on same row: SQL standard says duplicate or repeated updates in same statement should cause errors -but because first row is updated, delete then insert it's considered different // Multiple update on same row: SQL standard says duplicate or repeated
// One insert, one update one delete happens (on same row, which is okay), then another update (which is illegal)target table missing PK, no source or target alias // updates in same statement should cause errors -but because first row
// is updated, delete then insert it's considered different
// One insert, one update one delete happens (on same row, which is
// okay), then another update (which is illegal)target table missing PK,
// no source or target alias
testMergeUsingException( testMergeUsingException(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) );"+ "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,1) );"
"CREATE TABLE SOURCE AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );", + "CREATE TABLE SOURCE AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );",
"MERGE INTO PARENT USING SOURCE ON (PARENT.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)", "MERGE INTO PARENT USING SOURCE ON (PARENT.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT 1 AS ID, 'Marcy'||X||X UNION ALL SELECT 1 AS ID, 'Marcy2'", "SELECT 1 AS ID, 'Marcy'||X||X UNION ALL SELECT 1 AS ID, 'Marcy2'",
3, 3,
"Unique index or primary key violation: \"Merge using ON column expression, duplicate _ROWID_ target record already updated, deleted or inserted:_ROWID_=2:in:PUBLIC.PARENT:conflicting source row number:2" "Unique index or primary key violation: \"Merge using ON column expression, duplicate _ROWID_ target record already updated, deleted or inserted:_ROWID_=2:in:PUBLIC.PARENT:conflicting source row number:2");
);
// Duplicate key updated 3 rows at once, only 1 expected // Duplicate key updated 3 rows at once, only 1 expected
testMergeUsingException( testMergeUsingException(
"CREATE TABLE PARENT AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );"+ "CREATE TABLE PARENT AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );"
"CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );", + "CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );",
"MERGE INTO PARENT USING SOURCE ON (PARENT.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)", "MERGE INTO PARENT USING SOURCE ON (PARENT.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)", "SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)",
3, 3, "Duplicate key updated 3 rows at once, only 1 expected");
"Duplicate key updated 3 rows at once, only 1 expected"
);
// Missing target columns in ON expression // Missing target columns in ON expression
testMergeUsingException( testMergeUsingException(
"CREATE TABLE PARENT AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );"+ "CREATE TABLE PARENT AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );"
"CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );", + "CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );",
"MERGE INTO PARENT USING SOURCE ON (1 = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)", "MERGE INTO PARENT USING SOURCE ON (1 = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)", "SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)",
3, 3, "No references to target columns found in ON clause");
"No references to target columns found in ON clause"
);
// Missing source columns in ON expression // Missing source columns in ON expression
testMergeUsingException( testMergeUsingException(
"CREATE TABLE PARENT AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );"+ "CREATE TABLE PARENT AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );"
"CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );", + "CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );",
"MERGE INTO PARENT USING SOURCE ON (PARENT.ID = 1) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)", "MERGE INTO PARENT USING SOURCE ON (PARENT.ID = 1) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID, SOURCE.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)", "SELECT X AS ID, 'Marcy'||X||X AS NAME FROM SYSTEM_RANGE(2,2) UNION ALL SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(3,3)",
3, 3, "No references to source columns found in ON clause");
"No references to source columns found in ON clause" // Insert does not insert correct values with respect to ON condition
); // (inserts ID value above 100, instead)
// Insert does not insert correct values with respect to ON condition (inserts ID value above 100, instead)
testMergeUsingException( testMergeUsingException(
"CREATE TABLE PARENT AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(4,4) );"+ "CREATE TABLE PARENT AS (SELECT 1 AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(4,4) );"
"CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );", + "CREATE TABLE SOURCE AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,3) );",
"MERGE INTO PARENT USING SOURCE ON (PARENT.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID+100, SOURCE.NAME)", "MERGE INTO PARENT USING SOURCE ON (PARENT.ID = SOURCE.ID) WHEN MATCHED THEN UPDATE SET PARENT.NAME = SOURCE.NAME||SOURCE.ID WHERE PARENT.ID = 2 DELETE WHERE PARENT.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (SOURCE.ID+100, SOURCE.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(4,4)", "SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(4,4)", 1,
1, "Expected to find key after row inserted, but none found. Insert does not match ON condition.");
"Expected to find key after row inserted, but none found. Insert does not match ON condition." // One insert, one update one delete happens, target table missing PK,
); // triggers update all NAME fields
// One insert, one update one delete happens, target table missing PK, triggers update all NAME fields triggerTestingUpdateCount = 0;
triggerTestingUpdateCount=0;
testMergeUsing( testMergeUsing(
"CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2));" "CREATE TABLE PARENT AS (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,2));"
+getCreateTriggerSQL(), + getCreateTriggerSQL(),
"MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,4) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE P.ID = 2 DELETE WHERE P.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)", "MERGE INTO PARENT AS P USING (SELECT X AS ID, 'Marcy'||X AS NAME FROM SYSTEM_RANGE(1,4) ) AS S ON (P.ID = S.ID) WHEN MATCHED THEN UPDATE SET P.NAME = S.NAME||S.ID WHERE P.ID = 2 DELETE WHERE P.ID = 1 WHEN NOT MATCHED THEN INSERT (ID, NAME) VALUES (S.ID, S.NAME)",
GATHER_ORDERED_RESULTS_SQL, GATHER_ORDERED_RESULTS_SQL,
"SELECT 2 AS ID, 'Marcy22-updated2' AS NAME UNION ALL SELECT X AS ID, 'Marcy'||X||'-inserted'||X AS NAME FROM SYSTEM_RANGE(3,4)", "SELECT 2 AS ID, 'Marcy22-updated2' AS NAME UNION ALL SELECT X AS ID, 'Marcy'||X||'-inserted'||X AS NAME FROM SYSTEM_RANGE(3,4)",
4 4);
); }
}
/** /**
* Run a test case of the merge using syntax * Run a test case of the merge using syntax
*
* @param setupSQL - one or more SQL statements to setup the case * @param setupSQL - one or more SQL statements to setup the case
* @param statementUnderTest - the merge statement being tested * @param statementUnderTest - the merge statement being tested
* @param gatherResultsSQL - a select which gathers the results of the merge from the target table * @param gatherResultsSQL - a select which gathers the results of the merge
* @param expectedResultsSQL - a select which returns the expected results in the target table * from the target table
* @param expectedRowUpdateCount - how many updates should be expected from the merge using * @param expectedResultsSQL - a select which returns the expected results
* @throws Exception * in the target table
* @param expectedRowUpdateCount - how many updates should be expected from
* the merge using
*/ */
private void testMergeUsing(String setupSQL, String statementUnderTest, String gatherResultsSQL, private void testMergeUsing(String setupSQL, String statementUnderTest,
String expectedResultsSQL, int expectedRowUpdateCount) throws Exception { String gatherResultsSQL, String expectedResultsSQL,
int expectedRowUpdateCount) throws Exception {
deleteDb("mergeUsingQueries"); deleteDb("mergeUsingQueries");
Connection conn = getConnection("mergeUsingQueries"); Connection conn = getConnection("mergeUsingQueries");
Statement stat; Statement stat;
...@@ -240,58 +229,66 @@ public class TestMergeUsing extends TestBase implements Trigger { ...@@ -240,58 +229,66 @@ public class TestMergeUsing extends TestBase implements Trigger {
ResultSet rs; ResultSet rs;
int rowCountUpdate; int rowCountUpdate;
try{ try {
stat = conn.createStatement(); stat = conn.createStatement();
stat.execute(setupSQL); stat.execute(setupSQL);
prep = conn.prepareStatement(statementUnderTest); prep = conn.prepareStatement(statementUnderTest);
rowCountUpdate = prep.executeUpdate(); rowCountUpdate = prep.executeUpdate();
// compare actual results from SQL result set with expected results - by diffing (aka set MINUS operation) // compare actual results from SQL result set with expected results
rs = stat.executeQuery("( "+gatherResultsSQL+" ) MINUS ( "+expectedResultsSQL+" )"); // - by diffing (aka set MINUS operation)
rs = stat.executeQuery("( " + gatherResultsSQL + " ) MINUS ( "
+ expectedResultsSQL + " )");
int rowCount = 0; int rowCount = 0;
StringBuffer diffBuffer = new StringBuffer(""); StringBuffer diffBuffer = new StringBuffer("");
while (rs.next()) { while (rs.next()) {
rowCount++; rowCount++;
diffBuffer.append("|"); diffBuffer.append("|");
for(int i = 1; i <= rs.getMetaData().getColumnCount(); i++){ for (int i = 1; i <= rs.getMetaData().getColumnCount(); i++) {
diffBuffer.append(rs.getObject(i)); diffBuffer.append(rs.getObject(i));
diffBuffer.append("|\n"); diffBuffer.append("|\n");
} }
} }
assertEquals("Differences between expected and actual output found:"+diffBuffer,0,rowCount); assertEquals("Differences between expected and actual output found:"
assertEquals("Expected update counts differ",expectedRowUpdateCount,rowCountUpdate); + diffBuffer, 0, rowCount);
} assertEquals("Expected update counts differ",
finally{ expectedRowUpdateCount, rowCountUpdate);
} finally {
conn.close(); conn.close();
deleteDb("mergeUsingQueries"); deleteDb("mergeUsingQueries");
} }
} }
/** /**
* Run a test case of the merge using syntax * Run a test case of the merge using syntax
*
* @param setupSQL - one or more SQL statements to setup the case * @param setupSQL - one or more SQL statements to setup the case
* @param statementUnderTest - the merge statement being tested * @param statementUnderTest - the merge statement being tested
* @param gatherResultsSQL - a select which gathers the results of the merge from the target table * @param gatherResultsSQL - a select which gathers the results of the merge
* @param expectedResultsSQL - a select which returns the expected results in the target table * from the target table
* @param expectedRowUpdateCount - how many updates should be expected from the merge using * @param expectedResultsSQL - a select which returns the expected results
* in the target table
* @param expectedRowUpdateCount - how many updates should be expected from
* the merge using
* @param exceptionMessage - the exception message expected * @param exceptionMessage - the exception message expected
* @throws Exception
*/ */
private void testMergeUsingException(String setupSQL, String statementUnderTest, String gatherResultsSQL, private void testMergeUsingException(String setupSQL,
String expectedResultsSQL, int expectedRowUpdateCount, String exceptionMessage) throws Exception { String statementUnderTest, String gatherResultsSQL,
try{ String expectedResultsSQL, int expectedRowUpdateCount,
testMergeUsing( setupSQL, statementUnderTest, gatherResultsSQL, String exceptionMessage) throws Exception {
expectedResultsSQL, expectedRowUpdateCount); try {
} testMergeUsing(setupSQL, statementUnderTest, gatherResultsSQL,
catch(RuntimeException|org.h2.jdbc.JdbcSQLException e){ expectedResultsSQL, expectedRowUpdateCount);
if(!e.getMessage().contains(exceptionMessage)){ } catch (RuntimeException | org.h2.jdbc.JdbcSQLException e) {
if (!e.getMessage().contains(exceptionMessage)) {
e.printStackTrace(); e.printStackTrace();
} }
assertContains(e.getMessage(),exceptionMessage); assertContains(e.getMessage(), exceptionMessage);
return; return;
} }
fail("Failed to see exception with message:"+exceptionMessage); fail("Failed to see exception with message:" + exceptionMessage);
} }
@Override @Override
...@@ -302,11 +299,11 @@ public class TestMergeUsing extends TestBase implements Trigger { ...@@ -302,11 +299,11 @@ public class TestMergeUsing extends TestBase implements Trigger {
throw new AssertionError("connection is null"); throw new AssertionError("connection is null");
} }
if (triggerName.startsWith("INS_BEFORE")) { if (triggerName.startsWith("INS_BEFORE")) {
newRow[1] = newRow[1] + "-inserted"+(++triggerTestingUpdateCount); newRow[1] = newRow[1] + "-inserted" + (++triggerTestingUpdateCount);
} else if (triggerName.startsWith("UPD_BEFORE")) { } else if (triggerName.startsWith("UPD_BEFORE")) {
newRow[1] = newRow[1] + "-updated"+(++triggerTestingUpdateCount); newRow[1] = newRow[1] + "-updated" + (++triggerTestingUpdateCount);
} else if (triggerName.startsWith("DEL_BEFORE")) { } else if (triggerName.startsWith("DEL_BEFORE")) {
oldRow[1] = oldRow[1] + "-deleted"+(++triggerTestingUpdateCount); oldRow[1] = oldRow[1] + "-deleted" + (++triggerTestingUpdateCount);
} }
} }
...@@ -327,30 +324,28 @@ public class TestMergeUsing extends TestBase implements Trigger { ...@@ -327,30 +324,28 @@ public class TestMergeUsing extends TestBase implements Trigger {
if (!"PARENT".equals(tableName)) { if (!"PARENT".equals(tableName)) {
throw new AssertionError("supposed to be PARENT"); throw new AssertionError("supposed to be PARENT");
} }
if ((trigger.endsWith("AFTER") && before) || if ((trigger.endsWith("AFTER") && before)
(trigger.endsWith("BEFORE") && !before)) { || (trigger.endsWith("BEFORE") && !before)) {
throw new AssertionError("triggerName: " + trigger + " before:" + before); throw new AssertionError(
"triggerName: " + trigger + " before:" + before);
} }
if ((trigger.startsWith("UPD") && type != UPDATE) || if ((trigger.startsWith("UPD") && type != UPDATE)
(trigger.startsWith("INS") && type != INSERT) || || (trigger.startsWith("INS") && type != INSERT)
(trigger.startsWith("DEL") && type != DELETE)) { || (trigger.startsWith("DEL") && type != DELETE)) {
throw new AssertionError("triggerName: " + trigger + " type:" + type); throw new AssertionError(
"triggerName: " + trigger + " type:" + type);
} }
} }
private String getCreateTriggerSQL(){ private String getCreateTriggerSQL() {
StringBuffer buf = new StringBuffer(); StringBuffer buf = new StringBuffer();
buf.append("CREATE TRIGGER INS_BEFORE " + buf.append("CREATE TRIGGER INS_BEFORE " + "BEFORE INSERT ON PARENT "
"BEFORE INSERT ON PARENT " + + "FOR EACH ROW NOWAIT CALL \"" + getClass().getName() + "\";");
"FOR EACH ROW NOWAIT CALL \"" + getClass().getName() + "\";"); buf.append("CREATE TRIGGER UPD_BEFORE " + "BEFORE UPDATE ON PARENT "
buf.append("CREATE TRIGGER UPD_BEFORE " + + "FOR EACH ROW NOWAIT CALL \"" + getClass().getName() + "\";");
"BEFORE UPDATE ON PARENT " + buf.append("CREATE TRIGGER DEL_BEFORE " + "BEFORE DELETE ON PARENT "
"FOR EACH ROW NOWAIT CALL \"" + getClass().getName() + "\";"); + "FOR EACH ROW NOWAIT CALL \"" + getClass().getName() + "\";");
buf.append("CREATE TRIGGER DEL_BEFORE " +
"BEFORE DELETE ON PARENT " +
"FOR EACH ROW NOWAIT CALL \"" + getClass().getName() + "\";");
return buf.toString(); return buf.toString();
} }
} }
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