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h2database
Commits
bcf109aa
提交
bcf109aa
authored
10月 04, 2018
作者:
Evgenij Ryazanov
浏览文件
操作
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电子邮件补丁
差异文件
Add AND conditions to MERGE USING
上级
a1ee79dc
显示空白字符变更
内嵌
并排
正在显示
3 个修改的文件
包含
68 行增加
和
15 行删除
+68
-15
Parser.java
h2/src/main/org/h2/command/Parser.java
+4
-0
MergeUsing.java
h2/src/main/org/h2/command/dml/MergeUsing.java
+36
-15
mergeUsing.sql
h2/src/test/org/h2/test/scripts/dml/mergeUsing.sql
+28
-0
没有找到文件。
h2/src/main/org/h2/command/Parser.java
浏览文件 @
bcf109aa
...
...
@@ -1510,6 +1510,7 @@ public class Parser {
}
private
void
parseWhenMatched
(
MergeUsing
command
)
{
Expression
and
=
readIf
(
"AND"
)
?
readExpression
()
:
null
;
read
(
"THEN"
);
int
startMatched
=
lastParseIndex
;
Update
updateCommand
=
null
;
...
...
@@ -1529,6 +1530,7 @@ public class Parser {
}
if
(
updateCommand
!=
null
||
deleteCommand
!=
null
)
{
MergeUsing
.
WhenMatched
when
=
new
MergeUsing
.
WhenMatched
(
command
);
when
.
setAndCondition
(
and
);
when
.
setUpdateCommand
(
updateCommand
);
when
.
setDeleteCommand
(
deleteCommand
);
command
.
addWhen
(
when
);
...
...
@@ -1540,12 +1542,14 @@ public class Parser {
private
void
parseWhenNotMatched
(
MergeUsing
command
)
{
read
(
NOT
);
read
(
"MATCHED"
);
Expression
and
=
readIf
(
"AND"
)
?
readExpression
()
:
null
;
read
(
"THEN"
);
if
(
readIf
(
"INSERT"
))
{
Insert
insertCommand
=
new
Insert
(
session
);
insertCommand
.
setTable
(
command
.
getTargetTable
());
parseInsertGivenTable
(
insertCommand
,
command
.
getTargetTable
());
MergeUsing
.
WhenNotMatched
when
=
new
MergeUsing
.
WhenNotMatched
(
command
);
when
.
setAndCondition
(
and
);
when
.
setInsertCommand
(
insertCommand
);
command
.
addWhen
(
when
);
}
else
{
...
...
h2/src/main/org/h2/command/dml/MergeUsing.java
浏览文件 @
bcf109aa
...
...
@@ -41,17 +41,33 @@ public class MergeUsing extends Prepared {
final
MergeUsing
mergeUsing
;
Expression
andCondition
;
When
(
MergeUsing
mergeUsing
)
{
this
.
mergeUsing
=
mergeUsing
;
}
/**
* Sets the specified AND condition.
*
* @param andCondition AND condition to set
*/
public
void
setAndCondition
(
Expression
andCondition
)
{
this
.
andCondition
=
andCondition
;
}
void
reset
()
{
// Nothing to do
}
abstract
int
merge
();
abstract
void
prepare
();
void
prepare
()
{
if
(
andCondition
!=
null
)
{
andCondition
.
mapColumns
(
mergeUsing
.
sourceTableFilter
,
2
,
Expression
.
MAP_INITIAL
);
andCondition
.
mapColumns
(
mergeUsing
.
targetTableFilter
,
1
,
Expression
.
MAP_INITIAL
);
}
}
abstract
int
evaluateTriggerMasks
();
...
...
@@ -109,14 +125,21 @@ public class MergeUsing extends Prepared {
@Override
void
prepare
()
{
super
.
prepare
();
if
(
updateCommand
!=
null
)
{
updateCommand
.
setSourceTableFilter
(
mergeUsing
.
sourceTableFilter
);
updateCommand
.
setCondition
(
appendOnCondition
(
updateCommand
));
updateCommand
.
setCondition
(
appendCondition
(
updateCommand
,
mergeUsing
.
onCondition
));
if
(
andCondition
!=
null
)
{
updateCommand
.
setCondition
(
appendCondition
(
updateCommand
,
andCondition
));
}
updateCommand
.
prepare
();
}
if
(
deleteCommand
!=
null
)
{
deleteCommand
.
setSourceTableFilter
(
mergeUsing
.
sourceTableFilter
);
deleteCommand
.
setCondition
(
appendOnCondition
(
deleteCommand
));
deleteCommand
.
setCondition
(
appendCondition
(
deleteCommand
,
mergeUsing
.
onCondition
));
if
(
andCondition
!=
null
)
{
deleteCommand
.
setCondition
(
appendCondition
(
deleteCommand
,
andCondition
));
}
deleteCommand
.
prepare
();
if
(
updateCommand
!=
null
)
{
updateCommand
.
setUpdatedKeysCollector
(
updatedKeys
);
...
...
@@ -148,18 +171,14 @@ public class MergeUsing extends Prepared {
}
}
private
Expression
appendOnCondition
(
Update
updateCommand
)
{
if
(
updateCommand
.
getCondition
()
==
null
)
{
return
mergeUsing
.
onCondition
;
}
return
new
ConditionAndOr
(
ConditionAndOr
.
AND
,
updateCommand
.
getCondition
(),
mergeUsing
.
onCondition
);
private
static
Expression
appendCondition
(
Update
updateCommand
,
Expression
condition
)
{
Expression
c
=
updateCommand
.
getCondition
();
return
c
==
null
?
condition
:
new
ConditionAndOr
(
ConditionAndOr
.
AND
,
c
,
condition
);
}
private
Expression
appendOnCondition
(
Delete
deleteCommand
)
{
if
(
deleteCommand
.
getCondition
()
==
null
)
{
return
mergeUsing
.
onCondition
;
}
return
new
ConditionAndOr
(
ConditionAndOr
.
AND
,
deleteCommand
.
getCondition
(),
mergeUsing
.
onCondition
);
private
static
Expression
appendCondition
(
Delete
deleteCommand
,
Expression
condition
)
{
Expression
c
=
deleteCommand
.
getCondition
();
return
c
==
null
?
condition
:
new
ConditionAndOr
(
ConditionAndOr
.
AND
,
c
,
condition
);
}
}
...
...
@@ -182,11 +201,13 @@ public class MergeUsing extends Prepared {
@Override
int
merge
()
{
return
insertCommand
.
update
();
return
andCondition
==
null
||
andCondition
.
getBooleanValue
(
mergeUsing
.
getSession
())
?
insertCommand
.
update
()
:
0
;
}
@Override
void
prepare
()
{
super
.
prepare
();
insertCommand
.
setSourceTableFilter
(
mergeUsing
.
sourceTableFilter
);
insertCommand
.
prepare
();
}
...
...
@@ -205,7 +226,7 @@ public class MergeUsing extends Prepared {
// Merge fields
Table
targetTable
;
private
TableFilter
targetTableFilter
;
TableFilter
targetTableFilter
;
private
Query
query
;
// MergeUsing fields
...
...
h2/src/test/org/h2/test/scripts/dml/mergeUsing.sql
浏览文件 @
bcf109aa
...
...
@@ -294,3 +294,31 @@ SELECT * FROM TEST;
DROP
TABLE
TEST
;
>
ok
CREATE
TABLE
T
(
ID
INT
,
F
BOOLEAN
,
VALUE
INT
);
>
ok
INSERT
INTO
T
VALUES
(
1
,
FALSE
,
10
),
(
2
,
TRUE
,
20
);
>
update
count
:
2
CREATE
TABLE
S
(
S_ID
INT
,
S_F
BOOLEAN
,
S_VALUE
INT
);
>
ok
INSERT
INTO
S
VALUES
(
1
,
FALSE
,
100
),
(
2
,
TRUE
,
200
),
(
3
,
FALSE
,
300
),
(
4
,
TRUE
,
400
);
>
update
count
:
4
MERGE
INTO
T
USING
S
ON
ID
=
S_ID
WHEN
MATCHED
AND
F
THEN
UPDATE
SET
VALUE
=
S_VALUE
WHEN
MATCHED
AND
NOT
F
THEN
DELETE
WHEN
NOT
MATCHED
AND
S_F
THEN
INSERT
VALUES
(
S_ID
,
S_F
,
S_VALUE
);
>
update
count
:
3
SELECT
*
FROM
T
;
>
ID
F
VALUE
>
-- ---- -----
>
2
TRUE
200
>
4
TRUE
400
>
rows
:
2
DROP
TABLE
T
,
S
;
>
ok
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