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Bug #32858: Erro: "Incorrect usage of UNION and INTO" does not take

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subselects into account
  
It is forbidden to use the SELECT INTO construction inside UNION statements
unless on the last SELECT of the union. The parser records whether it 
has seen INTO or not when parsing a UNION statement. But if the INTO was
legally used in an outer query, an error is thrown if UNION is seen in a
subquery. Fixed in 5.0 by remembering the nesting level of INTO tokens and 
mitigate the error unless it collides with the UNION.
This commit is contained in:
gkodinov/kgeorge@magare.gmz
2008-05-13 18:10:46 +03:00
parent e6b8470d56
commit f6951f3e9f
5 changed files with 152 additions and 9 deletions
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42
mysql-test/r/union.result
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@@ -153,6 +153,48 @@ ERROR 42S22: Unknown column 'a' in 'field list'
1 3
1 3
2 1
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1);
SELECT a INTO @v FROM (
SELECT a FROM t1
UNION
SELECT a FROM t1
) alias;
SELECT a INTO OUTFILE 'union.out.file' FROM (
SELECT a FROM t1
UNION
SELECT a FROM t1 WHERE 0
) alias;
SELECT a INTO DUMPFILE 'union.out.file2' FROM (
SELECT a FROM t1
UNION
SELECT a FROM t1 WHERE 0
) alias;
SELECT a FROM (
SELECT a FROM t1
UNION
SELECT a INTO @v FROM t1
) alias;
SELECT a FROM (
SELECT a FROM t1
UNION
SELECT a INTO OUTFILE 'union.out.file3' FROM t1
) alias;
SELECT a FROM (
SELECT a FROM t1
UNION
SELECT a INTO DUMPFILE 'union.out.file4' FROM t1
) alias;
SELECT a FROM t1 UNION SELECT a INTO @v FROM t1;
SELECT a FROM t1 UNION SELECT a INTO OUTFILE 'union.out.file5' FROM t1;
SELECT a FROM t1 UNION SELECT a INTO OUTFILE 'union.out.file6' FROM t1;
SELECT a INTO @v FROM t1 UNION SELECT a FROM t1;
ERROR HY000: Incorrect usage of UNION and INTO
SELECT a INTO OUTFILE 'union.out.file7' FROM t1 UNION SELECT a FROM t1;
ERROR HY000: Incorrect usage of UNION and INTO
SELECT a INTO DUMPFILE 'union.out.file8' FROM t1 UNION SELECT a FROM t1;
ERROR HY000: Incorrect usage of UNION and INTO
DROP TABLE t1;
CREATE TABLE t1 (
`pseudo` char(35) NOT NULL default '',
`pseudo1` char(35) NOT NULL default '',