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h2database
Commits
c3dc3cbd
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c3dc3cbd
authored
6月 06, 2017
作者:
Owner
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差异文件
Issue#479 Enhanced tests - removed comment about parameters not working
上级
5b81d2b9
隐藏空白字符变更
内嵌
并排
正在显示
2 个修改的文件
包含
79 行增加
和
4 行删除
+79
-4
help.csv
h2/src/docsrc/help/help.csv
+2
-4
TestGeneralCommonTableQueries.java
...rc/test/org/h2/test/db/TestGeneralCommonTableQueries.java
+77
-0
没有找到文件。
h2/src/docsrc/help/help.csv
浏览文件 @
c3dc3cbd
...
...
@@ -197,12 +197,10 @@ WITH [ RECURSIVE ] { name [( columnName [,...] )]
AS ( select ) [,...] }
select
","
Can be used to create a recursive
query
.
Can be used to create a recursive
or non-recursive query (common table expression)
.
For recursive queries the first select has to be a UNION.
Non-recursive queries are also supported.
One or more common table entries can be use referred to by name..
One or more common table entries can be referred to by name.
Column name declarations are now optional - the column names will be inferred from the named select queries.
Positional parameters are not currently supported.
","
WITH RECURSIVE t(n) AS (
SELECT 1
...
...
h2/src/test/org/h2/test/db/TestGeneralCommonTableQueries.java
浏览文件 @
c3dc3cbd
...
...
@@ -30,6 +30,8 @@ public class TestGeneralCommonTableQueries extends TestBase {
testSimple
();
testImpliedColumnNames
();
testChainedQuery
();
testParameterizedQuery
();
testNumberedParameterizedQuery
();
}
private
void
testSimple
()
throws
Exception
{
...
...
@@ -126,6 +128,7 @@ public class TestGeneralCommonTableQueries extends TestBase {
+
" SELECT FIRST_COLUMN+1 AS FIRST_COLUMN FROM t1 "
+
") "
+
"SELECT sum(FIRST_COLUMN) FROM t2"
);
rs
=
prep
.
executeQuery
();
assertTrue
(
rs
.
next
());
assertEquals
(
2
,
rs
.
getInt
(
1
));
...
...
@@ -134,4 +137,78 @@ public class TestGeneralCommonTableQueries extends TestBase {
conn
.
close
();
deleteDb
(
"commonTableExpressionQueries"
);
}
private
void
testParameterizedQuery
()
throws
Exception
{
deleteDb
(
"commonTableExpressionQueries"
);
Connection
conn
=
getConnection
(
"commonTableExpressionQueries"
);
PreparedStatement
prep
;
ResultSet
rs
;
prep
=
conn
.
prepareStatement
(
"WITH t1 AS ("
+
" SELECT X, 'T1' FROM SYSTEM_RANGE(?,?)"
+
"),"
+
"t2 AS ("
+
" SELECT X, 'T2' FROM SYSTEM_RANGE(?,?)"
+
") "
+
"SELECT * FROM t1 UNION ALL SELECT * FROM t2 UNION ALL SELECT X, 'Q' FROM SYSTEM_RANGE(?,?)"
);
prep
.
setInt
(
1
,
1
);
prep
.
setInt
(
2
,
2
);
prep
.
setInt
(
3
,
3
);
prep
.
setInt
(
4
,
4
);
prep
.
setInt
(
5
,
5
);
prep
.
setInt
(
6
,
6
);
rs
=
prep
.
executeQuery
();
for
(
int
n:
new
int
[]{
1
,
2
,
3
,
4
,
5
,
6
}
){
assertTrue
(
rs
.
next
());
assertEquals
(
n
,
rs
.
getInt
(
1
));
}
assertFalse
(
rs
.
next
());
// call it twice
rs
=
prep
.
executeQuery
();
for
(
int
n:
new
int
[]{
1
,
2
,
3
,
4
,
5
,
6
}
){
assertTrue
(
rs
.
next
());
assertEquals
(
n
,
rs
.
getInt
(
1
));
}
assertFalse
(
rs
.
next
());
conn
.
close
();
deleteDb
(
"commonTableExpressionQueries"
);
}
private
void
testNumberedParameterizedQuery
()
throws
Exception
{
deleteDb
(
"commonTableExpressionQueries"
);
Connection
conn
=
getConnection
(
"commonTableExpressionQueries"
);
PreparedStatement
prep
;
ResultSet
rs
;
prep
=
conn
.
prepareStatement
(
"WITH t1 AS ("
+
" SELECT R.X, 'T1' FROM SYSTEM_RANGE(?1,?2) R"
+
"),"
+
"t2 AS ("
+
" SELECT R.X, 'T2' FROM SYSTEM_RANGE(?3,?4) R"
+
") "
+
"SELECT * FROM t1 UNION ALL SELECT * FROM t2 UNION ALL SELECT X, 'Q' FROM SYSTEM_RANGE(?5,?6)"
);
prep
.
setInt
(
1
,
1
);
prep
.
setInt
(
2
,
2
);
prep
.
setInt
(
3
,
3
);
prep
.
setInt
(
4
,
4
);
prep
.
setInt
(
5
,
5
);
prep
.
setInt
(
6
,
6
);
rs
=
prep
.
executeQuery
();
for
(
int
n:
new
int
[]{
1
,
2
,
3
,
4
,
5
,
6
}
){
assertTrue
(
rs
.
next
());
assertEquals
(
n
,
rs
.
getInt
(
1
));
}
assertEquals
(
"X"
,
rs
.
getMetaData
().
getColumnLabel
(
1
));
assertEquals
(
"'T1'"
,
rs
.
getMetaData
().
getColumnLabel
(
2
));
assertFalse
(
rs
.
next
());
conn
.
close
();
deleteDb
(
"commonTableExpressionQueries"
);
}
}
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