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eba06308
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eba06308
authored
11月 02, 2017
作者:
plus33
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电子邮件补丁
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Fixed CR/LF issue with Git
上级
d4a99ea1
隐藏空白字符变更
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正在显示
1 个修改的文件
包含
320 行增加
和
319 行删除
+320
-319
TestAlter.java
h2/src/test/org/h2/test/db/TestAlter.java
+320
-319
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h2/src/test/org/h2/test/db/TestAlter.java
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eba06308
/*
* Copyright 2004-2014 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package
org
.
h2
.
test
.
db
;
import
java.sql.Connection
;
import
java.sql.DatabaseMetaData
;
import
java.sql.ResultSet
;
import
java.sql.SQLException
;
import
java.sql.Statement
;
import
org.h2.api.ErrorCode
;
import
org.h2.test.TestBase
;
/**
* Test ALTER statements.
*/
public
class
TestAlter
extends
TestBase
{
private
Connection
conn
;
private
Statement
stat
;
/**
* Run just this test.
*
* @param a ignored
*/
public
static
void
main
(
String
...
a
)
throws
Exception
{
TestBase
.
createCaller
().
init
().
test
();
}
@Override
public
void
test
()
throws
Exception
{
deleteDb
(
getTestName
());
conn
=
getConnection
(
getTestName
());
stat
=
conn
.
createStatement
();
testAlterTableRenameConstraint
();
testAlterTableAlterColumnAsSelfColumn
();
testAlterTableDropColumnWithReferences
();
testAlterTableDropMultipleColumns
();
testAlterTableAlterColumnWithConstraint
();
testAlterTableAlterColumn
();
testAlterTableAddColumnIdentity
();
testAlterTableDropIdentityColumn
();
testAlterTableAddColumnIfNotExists
();
testAlterTableAddMultipleColumns
();
testAlterTableAlterColumn2
();
testAlterTableAddColumnBefore
();
testAlterTableAddColumnAfter
();
testAlterTableAddMultipleColumnsBefore
();
testAlterTableAddMultipleColumnsAfter
();
testAlterTableModifyColumn
();
testAlterTableModifyColumnSetNull
();
conn
.
close
();
deleteDb
(
getTestName
());
}
private
void
testAlterTableAlterColumnAsSelfColumn
()
throws
SQLException
{
stat
.
execute
(
"create table test(id int, name varchar)"
);
stat
.
execute
(
"alter table test alter column id int as id+1"
);
stat
.
execute
(
"insert into test values(1, 'Hello')"
);
stat
.
execute
(
"update test set name='World'"
);
ResultSet
rs
=
stat
.
executeQuery
(
"select * from test"
);
rs
.
next
();
assertEquals
(
3
,
rs
.
getInt
(
1
));
stat
.
execute
(
"drop table test"
);
}
private
void
testAlterTableDropColumnWithReferences
()
throws
SQLException
{
stat
.
execute
(
"create table parent(id int, b int)"
);
stat
.
execute
(
"create table child(p int primary key)"
);
stat
.
execute
(
"alter table child add foreign key(p) references parent(id)"
);
stat
.
execute
(
"alter table parent drop column id"
);
stat
.
execute
(
"drop table parent"
);
stat
.
execute
(
"drop table child"
);
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x check (id > name)"
);
// the constraint references multiple columns
assertThrows
(
ErrorCode
.
COLUMN_IS_REFERENCED_1
,
stat
).
execute
(
"alter table test drop column id"
);
stat
.
execute
(
"drop table test"
);
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x unique(id, name)"
);
// the constraint references multiple columns
assertThrows
(
ErrorCode
.
COLUMN_IS_REFERENCED_1
,
stat
).
execute
(
"alter table test drop column id"
);
stat
.
execute
(
"drop table test"
);
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x check (id > 1)"
);
stat
.
execute
(
"alter table test drop column id"
);
stat
.
execute
(
"drop table test"
);
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x check (name > 'TEST.ID')"
);
// previous versions of H2 used sql.indexOf(columnName)
// to check if the column is referenced
stat
.
execute
(
"alter table test drop column id"
);
stat
.
execute
(
"drop table test"
);
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x unique(id)"
);
stat
.
execute
(
"alter table test drop column id"
);
stat
.
execute
(
"drop table test"
);
}
private
void
testAlterTableDropMultipleColumns
()
throws
SQLException
{
stat
.
execute
(
"create table test(id int, name varchar, name2 varchar)"
);
stat
.
execute
(
"alter table test drop column name, name2"
);
stat
.
execute
(
"drop table test"
);
// Test-Case: Same as above but using brackets (Oracle style)
stat
.
execute
(
"create table test(id int, b varchar, c int, d int)"
);
stat
.
execute
(
"alter table test drop column (b, c)"
);
assertThrows
(
ErrorCode
.
COLUMN_NOT_FOUND_1
,
stat
).
execute
(
"alter table test drop column b"
);
stat
.
execute
(
"alter table test drop (d)"
);
stat
.
execute
(
"drop table test"
);
// Test-Case: Error if dropping all columns
stat
.
execute
(
"create table test(id int, name varchar, name2 varchar)"
);
assertThrows
(
ErrorCode
.
CANNOT_DROP_LAST_COLUMN
,
stat
).
execute
(
"alter table test drop column id, name, name2"
);
stat
.
execute
(
"drop table test"
);
}
/**
* Tests a bug we used to have where altering the name of a column that had
* a check constraint that referenced itself would result in not being able
* to re-open the DB.
*/
private
void
testAlterTableAlterColumnWithConstraint
()
throws
SQLException
{
if
(
config
.
memory
)
{
return
;
}
stat
.
execute
(
"create table test(id int check(id in (1,2)) )"
);
stat
.
execute
(
"alter table test alter id rename to id2"
);
// disconnect and reconnect
conn
.
close
();
conn
=
getConnection
(
getTestName
());
stat
=
conn
.
createStatement
();
stat
.
execute
(
"insert into test values(1)"
);
assertThrows
(
ErrorCode
.
CHECK_CONSTRAINT_VIOLATED_1
,
stat
).
execute
(
"insert into test values(3)"
);
stat
.
execute
(
"drop table test"
);
}
private
void
testAlterTableRenameConstraint
()
throws
SQLException
{
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x check (id > name)"
);
stat
.
execute
(
"alter table test rename constraint x to x2"
);
stat
.
execute
(
"drop table test"
);
}
private
void
testAlterTableDropIdentityColumn
()
throws
SQLException
{
stat
.
execute
(
"create table test(id int auto_increment, name varchar)"
);
stat
.
execute
(
"alter table test drop column id"
);
ResultSet
rs
=
stat
.
executeQuery
(
"select * from INFORMATION_SCHEMA.SEQUENCES"
);
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table test"
);
stat
.
execute
(
"create table test(id int auto_increment, name varchar)"
);
stat
.
execute
(
"alter table test drop column name"
);
rs
=
stat
.
executeQuery
(
"select * from INFORMATION_SCHEMA.SEQUENCES"
);
assertTrue
(
rs
.
next
());
stat
.
execute
(
"drop table test"
);
}
private
void
testAlterTableAlterColumn
()
throws
SQLException
{
stat
.
execute
(
"create table t(x varchar) as select 'x'"
);
assertThrows
(
ErrorCode
.
DATA_CONVERSION_ERROR_1
,
stat
).
execute
(
"alter table t alter column x int"
);
stat
.
execute
(
"drop table t"
);
stat
.
execute
(
"create table t(id identity, x varchar) as select null, 'x'"
);
assertThrows
(
ErrorCode
.
DATA_CONVERSION_ERROR_1
,
stat
).
execute
(
"alter table t alter column x int"
);
stat
.
execute
(
"drop table t"
);
}
private
void
testAlterTableAddColumnIdentity
()
throws
SQLException
{
stat
.
execute
(
"create table t(x varchar)"
);
stat
.
execute
(
"alter table t add id bigint identity(5, 5) not null"
);
stat
.
execute
(
"insert into t values (null, null)"
);
stat
.
execute
(
"insert into t values (null, null)"
);
ResultSet
rs
=
stat
.
executeQuery
(
"select id from t order by id"
);
assertTrue
(
rs
.
next
());
assertEquals
(
5
,
rs
.
getInt
(
1
));
assertTrue
(
rs
.
next
());
assertEquals
(
10
,
rs
.
getInt
(
1
));
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table t"
);
}
private
void
testAlterTableAddColumnIfNotExists
()
throws
SQLException
{
stat
.
execute
(
"create table t(x varchar) as select 'x'"
);
stat
.
execute
(
"alter table t add if not exists x int"
);
stat
.
execute
(
"drop table t"
);
stat
.
execute
(
"create table t(x varchar) as select 'x'"
);
stat
.
execute
(
"alter table t add if not exists y int"
);
stat
.
execute
(
"select x, y from t"
);
stat
.
execute
(
"drop table t"
);
}
private
void
testAlterTableAddMultipleColumns
()
throws
SQLException
{
stat
.
execute
(
"create table t(x varchar) as select 'x'"
);
stat
.
execute
(
"alter table t add (y int, z varchar)"
);
stat
.
execute
(
"drop table t"
);
stat
.
execute
(
"create table t(x varchar) as select 'x'"
);
stat
.
execute
(
"alter table t add (y int)"
);
stat
.
execute
(
"drop table t"
);
}
// column and field names must be upper-case due to getMetaData sensitivity
private
void
testAlterTableAddMultipleColumnsBefore
()
throws
SQLException
{
stat
.
execute
(
"create table T(X varchar)"
);
stat
.
execute
(
"alter table T add (Y int, Z int) before X"
);
DatabaseMetaData
dbMeta
=
conn
.
getMetaData
();
ResultSet
rs
=
dbMeta
.
getColumns
(
null
,
null
,
"T"
,
null
);
assertTrue
(
rs
.
next
());
assertEquals
(
"Y"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"Z"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"X"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table T"
);
}
// column and field names must be upper-case due to getMetaData sensitivity
private
void
testAlterTableAddMultipleColumnsAfter
()
throws
SQLException
{
stat
.
execute
(
"create table T(X varchar)"
);
stat
.
execute
(
"alter table T add (Y int, Z int) after X"
);
DatabaseMetaData
dbMeta
=
conn
.
getMetaData
();
ResultSet
rs
=
dbMeta
.
getColumns
(
null
,
null
,
"T"
,
null
);
assertTrue
(
rs
.
next
());
assertEquals
(
"X"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"Y"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"Z"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table T"
);
}
// column and field names must be upper-case due to getMetaData sensitivity
private
void
testAlterTableAddColumnBefore
()
throws
SQLException
{
stat
.
execute
(
"create table T(X varchar)"
);
stat
.
execute
(
"alter table T add Y int before X"
);
DatabaseMetaData
dbMeta
=
conn
.
getMetaData
();
ResultSet
rs
=
dbMeta
.
getColumns
(
null
,
null
,
"T"
,
null
);
assertTrue
(
rs
.
next
());
assertEquals
(
"Y"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"X"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table T"
);
}
// column and field names must be upper-case due to getMetaData sensitivity
private
void
testAlterTableAddColumnAfter
()
throws
SQLException
{
stat
.
execute
(
"create table T(X varchar)"
);
stat
.
execute
(
"alter table T add Y int after X"
);
DatabaseMetaData
dbMeta
=
conn
.
getMetaData
();
ResultSet
rs
=
dbMeta
.
getColumns
(
null
,
null
,
"T"
,
null
);
assertTrue
(
rs
.
next
());
assertEquals
(
"X"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"Y"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table T"
);
}
private
void
testAlterTableAlterColumn2
()
throws
SQLException
{
// ensure that increasing a VARCHAR columns length takes effect because
// we optimize this case
stat
.
execute
(
"create table t(x varchar(2)) as select 'x'"
);
stat
.
execute
(
"alter table t alter column x varchar(20)"
);
stat
.
execute
(
"insert into t values('Hello')"
);
stat
.
execute
(
"drop table t"
);
}
private
void
testAlterTableModifyColumn
()
throws
SQLException
{
stat
.
execute
(
"create table t(x int)"
);
stat
.
execute
(
"alter table t modify column x varchar(20)"
);
stat
.
execute
(
"insert into t values('Hello')"
);
stat
.
execute
(
"drop table t"
);
}
/**
* Test for fix "Change not-null / null -constraint to existing column"
* (MySql/ORACLE - SQL style) that failed silently corrupting the changed
* column.<br/>
* Before the change (added after v1.4.196) following was observed:
* <pre>
* alter table T modify C int null; -- Worked as expected
* alter table T modify C null; -- Silently corrupted column C
* </pre>
*/
private
void
testAlterTableModifyColumnSetNull
()
throws
SQLException
{
// This worked in v1.4.196
stat
.
execute
(
"create table T (C varchar not null)"
);
stat
.
execute
(
"alter table T modify C int null"
);
stat
.
execute
(
"insert into T values(null)"
);
stat
.
execute
(
"drop table T"
);
// This failed in v1.4.196
stat
.
execute
(
"create table T (C int not null)"
);
stat
.
execute
(
"alter table T modify C null"
);
// Silently corrupted column C
stat
.
execute
(
"insert into T values(null)"
);
// <- Fixed in v1.4.196 - NULL is allowed
stat
.
execute
(
"drop table T"
);
}
}
/*
* Copyright 2004-2014 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package
org
.
h2
.
test
.
db
;
import
java.sql.Connection
;
import
java.sql.DatabaseMetaData
;
import
java.sql.ResultSet
;
import
java.sql.SQLException
;
import
java.sql.Statement
;
import
org.h2.api.ErrorCode
;
import
org.h2.test.TestBase
;
/**
* Test ALTER statements.
*/
public
class
TestAlter
extends
TestBase
{
private
Connection
conn
;
private
Statement
stat
;
/**
* Run just this test.
*
* @param a ignored
*/
public
static
void
main
(
String
...
a
)
throws
Exception
{
TestBase
.
createCaller
().
init
().
test
();
}
@Override
public
void
test
()
throws
Exception
{
deleteDb
(
getTestName
());
conn
=
getConnection
(
getTestName
());
stat
=
conn
.
createStatement
();
testAlterTableRenameConstraint
();
testAlterTableAlterColumnAsSelfColumn
();
testAlterTableDropColumnWithReferences
();
testAlterTableDropMultipleColumns
();
testAlterTableAlterColumnWithConstraint
();
testAlterTableAlterColumn
();
testAlterTableAddColumnIdentity
();
testAlterTableDropIdentityColumn
();
testAlterTableAddColumnIfNotExists
();
testAlterTableAddMultipleColumns
();
testAlterTableAlterColumn2
();
testAlterTableAddColumnBefore
();
testAlterTableAddColumnAfter
();
testAlterTableAddMultipleColumnsBefore
();
testAlterTableAddMultipleColumnsAfter
();
testAlterTableModifyColumn
();
testAlterTableModifyColumnSetNull
();
conn
.
close
();
deleteDb
(
getTestName
());
}
private
void
testAlterTableAlterColumnAsSelfColumn
()
throws
SQLException
{
stat
.
execute
(
"create table test(id int, name varchar)"
);
stat
.
execute
(
"alter table test alter column id int as id+1"
);
stat
.
execute
(
"insert into test values(1, 'Hello')"
);
stat
.
execute
(
"update test set name='World'"
);
ResultSet
rs
=
stat
.
executeQuery
(
"select * from test"
);
rs
.
next
();
assertEquals
(
3
,
rs
.
getInt
(
1
));
stat
.
execute
(
"drop table test"
);
}
private
void
testAlterTableDropColumnWithReferences
()
throws
SQLException
{
stat
.
execute
(
"create table parent(id int, b int)"
);
stat
.
execute
(
"create table child(p int primary key)"
);
stat
.
execute
(
"alter table child add foreign key(p) references parent(id)"
);
stat
.
execute
(
"alter table parent drop column id"
);
stat
.
execute
(
"drop table parent"
);
stat
.
execute
(
"drop table child"
);
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x check (id > name)"
);
// the constraint references multiple columns
assertThrows
(
ErrorCode
.
COLUMN_IS_REFERENCED_1
,
stat
).
execute
(
"alter table test drop column id"
);
stat
.
execute
(
"drop table test"
);
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x unique(id, name)"
);
// the constraint references multiple columns
assertThrows
(
ErrorCode
.
COLUMN_IS_REFERENCED_1
,
stat
).
execute
(
"alter table test drop column id"
);
stat
.
execute
(
"drop table test"
);
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x check (id > 1)"
);
stat
.
execute
(
"alter table test drop column id"
);
stat
.
execute
(
"drop table test"
);
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x check (name > 'TEST.ID')"
);
// previous versions of H2 used sql.indexOf(columnName)
// to check if the column is referenced
stat
.
execute
(
"alter table test drop column id"
);
stat
.
execute
(
"drop table test"
);
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x unique(id)"
);
stat
.
execute
(
"alter table test drop column id"
);
stat
.
execute
(
"drop table test"
);
}
private
void
testAlterTableDropMultipleColumns
()
throws
SQLException
{
stat
.
execute
(
"create table test(id int, b varchar, c int, d int)"
);
stat
.
execute
(
"alter table test drop column b, c"
);
stat
.
execute
(
"alter table test drop d"
);
stat
.
execute
(
"drop table test"
);
// Test-Case: Same as above but using brackets (Oracle style)
stat
.
execute
(
"create table test(id int, b varchar, c int, d int)"
);
stat
.
execute
(
"alter table test drop column (b, c)"
);
assertThrows
(
ErrorCode
.
COLUMN_NOT_FOUND_1
,
stat
).
execute
(
"alter table test drop column b"
);
stat
.
execute
(
"alter table test drop (d)"
);
stat
.
execute
(
"drop table test"
);
// Test-Case: Error if dropping all columns
stat
.
execute
(
"create table test(id int, name varchar, name2 varchar)"
);
assertThrows
(
ErrorCode
.
CANNOT_DROP_LAST_COLUMN
,
stat
).
execute
(
"alter table test drop column id, name, name2"
);
stat
.
execute
(
"drop table test"
);
}
/**
* Tests a bug we used to have where altering the name of a column that had
* a check constraint that referenced itself would result in not being able
* to re-open the DB.
*/
private
void
testAlterTableAlterColumnWithConstraint
()
throws
SQLException
{
if
(
config
.
memory
)
{
return
;
}
stat
.
execute
(
"create table test(id int check(id in (1,2)) )"
);
stat
.
execute
(
"alter table test alter id rename to id2"
);
// disconnect and reconnect
conn
.
close
();
conn
=
getConnection
(
getTestName
());
stat
=
conn
.
createStatement
();
stat
.
execute
(
"insert into test values(1)"
);
assertThrows
(
ErrorCode
.
CHECK_CONSTRAINT_VIOLATED_1
,
stat
).
execute
(
"insert into test values(3)"
);
stat
.
execute
(
"drop table test"
);
}
private
void
testAlterTableRenameConstraint
()
throws
SQLException
{
stat
.
execute
(
"create table test(id int, name varchar(255))"
);
stat
.
execute
(
"alter table test add constraint x check (id > name)"
);
stat
.
execute
(
"alter table test rename constraint x to x2"
);
stat
.
execute
(
"drop table test"
);
}
private
void
testAlterTableDropIdentityColumn
()
throws
SQLException
{
stat
.
execute
(
"create table test(id int auto_increment, name varchar)"
);
stat
.
execute
(
"alter table test drop column id"
);
ResultSet
rs
=
stat
.
executeQuery
(
"select * from INFORMATION_SCHEMA.SEQUENCES"
);
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table test"
);
stat
.
execute
(
"create table test(id int auto_increment, name varchar)"
);
stat
.
execute
(
"alter table test drop column name"
);
rs
=
stat
.
executeQuery
(
"select * from INFORMATION_SCHEMA.SEQUENCES"
);
assertTrue
(
rs
.
next
());
stat
.
execute
(
"drop table test"
);
}
private
void
testAlterTableAlterColumn
()
throws
SQLException
{
stat
.
execute
(
"create table t(x varchar) as select 'x'"
);
assertThrows
(
ErrorCode
.
DATA_CONVERSION_ERROR_1
,
stat
).
execute
(
"alter table t alter column x int"
);
stat
.
execute
(
"drop table t"
);
stat
.
execute
(
"create table t(id identity, x varchar) as select null, 'x'"
);
assertThrows
(
ErrorCode
.
DATA_CONVERSION_ERROR_1
,
stat
).
execute
(
"alter table t alter column x int"
);
stat
.
execute
(
"drop table t"
);
}
private
void
testAlterTableAddColumnIdentity
()
throws
SQLException
{
stat
.
execute
(
"create table t(x varchar)"
);
stat
.
execute
(
"alter table t add id bigint identity(5, 5) not null"
);
stat
.
execute
(
"insert into t values (null, null)"
);
stat
.
execute
(
"insert into t values (null, null)"
);
ResultSet
rs
=
stat
.
executeQuery
(
"select id from t order by id"
);
assertTrue
(
rs
.
next
());
assertEquals
(
5
,
rs
.
getInt
(
1
));
assertTrue
(
rs
.
next
());
assertEquals
(
10
,
rs
.
getInt
(
1
));
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table t"
);
}
private
void
testAlterTableAddColumnIfNotExists
()
throws
SQLException
{
stat
.
execute
(
"create table t(x varchar) as select 'x'"
);
stat
.
execute
(
"alter table t add if not exists x int"
);
stat
.
execute
(
"drop table t"
);
stat
.
execute
(
"create table t(x varchar) as select 'x'"
);
stat
.
execute
(
"alter table t add if not exists y int"
);
stat
.
execute
(
"select x, y from t"
);
stat
.
execute
(
"drop table t"
);
}
private
void
testAlterTableAddMultipleColumns
()
throws
SQLException
{
stat
.
execute
(
"create table t(x varchar) as select 'x'"
);
stat
.
execute
(
"alter table t add (y int, z varchar)"
);
stat
.
execute
(
"drop table t"
);
stat
.
execute
(
"create table t(x varchar) as select 'x'"
);
stat
.
execute
(
"alter table t add (y int)"
);
stat
.
execute
(
"drop table t"
);
}
// column and field names must be upper-case due to getMetaData sensitivity
private
void
testAlterTableAddMultipleColumnsBefore
()
throws
SQLException
{
stat
.
execute
(
"create table T(X varchar)"
);
stat
.
execute
(
"alter table T add (Y int, Z int) before X"
);
DatabaseMetaData
dbMeta
=
conn
.
getMetaData
();
ResultSet
rs
=
dbMeta
.
getColumns
(
null
,
null
,
"T"
,
null
);
assertTrue
(
rs
.
next
());
assertEquals
(
"Y"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"Z"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"X"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table T"
);
}
// column and field names must be upper-case due to getMetaData sensitivity
private
void
testAlterTableAddMultipleColumnsAfter
()
throws
SQLException
{
stat
.
execute
(
"create table T(X varchar)"
);
stat
.
execute
(
"alter table T add (Y int, Z int) after X"
);
DatabaseMetaData
dbMeta
=
conn
.
getMetaData
();
ResultSet
rs
=
dbMeta
.
getColumns
(
null
,
null
,
"T"
,
null
);
assertTrue
(
rs
.
next
());
assertEquals
(
"X"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"Y"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"Z"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table T"
);
}
// column and field names must be upper-case due to getMetaData sensitivity
private
void
testAlterTableAddColumnBefore
()
throws
SQLException
{
stat
.
execute
(
"create table T(X varchar)"
);
stat
.
execute
(
"alter table T add Y int before X"
);
DatabaseMetaData
dbMeta
=
conn
.
getMetaData
();
ResultSet
rs
=
dbMeta
.
getColumns
(
null
,
null
,
"T"
,
null
);
assertTrue
(
rs
.
next
());
assertEquals
(
"Y"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"X"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table T"
);
}
// column and field names must be upper-case due to getMetaData sensitivity
private
void
testAlterTableAddColumnAfter
()
throws
SQLException
{
stat
.
execute
(
"create table T(X varchar)"
);
stat
.
execute
(
"alter table T add Y int after X"
);
DatabaseMetaData
dbMeta
=
conn
.
getMetaData
();
ResultSet
rs
=
dbMeta
.
getColumns
(
null
,
null
,
"T"
,
null
);
assertTrue
(
rs
.
next
());
assertEquals
(
"X"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertTrue
(
rs
.
next
());
assertEquals
(
"Y"
,
rs
.
getString
(
"COLUMN_NAME"
));
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table T"
);
}
private
void
testAlterTableAlterColumn2
()
throws
SQLException
{
// ensure that increasing a VARCHAR columns length takes effect because
// we optimize this case
stat
.
execute
(
"create table t(x varchar(2)) as select 'x'"
);
stat
.
execute
(
"alter table t alter column x varchar(20)"
);
stat
.
execute
(
"insert into t values('Hello')"
);
stat
.
execute
(
"drop table t"
);
}
private
void
testAlterTableModifyColumn
()
throws
SQLException
{
stat
.
execute
(
"create table t(x int)"
);
stat
.
execute
(
"alter table t modify column x varchar(20)"
);
stat
.
execute
(
"insert into t values('Hello')"
);
stat
.
execute
(
"drop table t"
);
}
/**
* Test for fix "Change not-null / null -constraint to existing column"
* (MySql/ORACLE - SQL style) that failed silently corrupting the changed
* column.<br/>
* Before the change (added after v1.4.196) following was observed:
* <pre>
* alter table T modify C int null; -- Worked as expected
* alter table T modify C null; -- Silently corrupted column C
* </pre>
*/
private
void
testAlterTableModifyColumnSetNull
()
throws
SQLException
{
// This worked in v1.4.196
stat
.
execute
(
"create table T (C varchar not null)"
);
stat
.
execute
(
"alter table T modify C int null"
);
stat
.
execute
(
"insert into T values(null)"
);
stat
.
execute
(
"drop table T"
);
// This failed in v1.4.196
stat
.
execute
(
"create table T (C int not null)"
);
stat
.
execute
(
"alter table T modify C null"
);
// Silently corrupted column C
stat
.
execute
(
"insert into T values(null)"
);
// <- Fixed in v1.4.196 - NULL is allowed
stat
.
execute
(
"drop table T"
);
}
}
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