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Fix for ticket #22: In the code generator for compound SELECT statements, take

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care not to generate column name headers if the output is an intermediate table.
Otherwise the column headers are not generated correctly if a compound SELECT
statement appears as an expression in part of the WHERE clause. (CVS 543)

FossilOrigin-Name: a06d9acdd5af0dc69b3a4d024de082631254aead
This commit is contained in:
drh
2002-04-23 17:10:18 +00:00
parent 60ea3720f2
commit 41202ccae2
4 changed files with 45 additions and 12 deletions
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31
test/select4.test
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@ -12,7 +12,7 @@
# focus of this file is testing UNION, INTERSECT and EXCEPT operators
# in SELECT statements.
#
# $Id: select4.test,v 1.4 2001/09/16 00:13:28 drh Exp $
# $Id: select4.test,v 1.5 2002/04/23 17:10:19 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
@ -249,4 +249,33 @@ do_test select4-6.2 {
}
} {0 1 1 1 2 2 3 4 3 7 4 8 5 15}
# Make sure column names are correct when a compound select appears as
# an expression in the WHERE clause.
#
do_test select4-7.1 {
execsql {
CREATE TABLE t2 AS SELECT log AS 'x', count(*) AS 'y' FROM t1 GROUP BY log;
SELECT * FROM t2 ORDER BY x;
}
} {0 1 1 1 2 2 3 4 4 8 5 15}
do_test select4-7.2 {
execsql2 {
SELECT * FROM t1 WHERE n IN (SELECT n FROM t1 INTERSECT SELECT x FROM t2)
ORDER BY n
}
} {n 1 log 0 n 2 log 1 n 3 log 2 n 4 log 2 n 5 log 3}
do_test select4-7.3 {
execsql2 {
SELECT * FROM t1 WHERE n IN (SELECT n FROM t1 EXCEPT SELECT x FROM t2)
ORDER BY n LIMIT 2
}
} {n 6 log 3 n 7 log 3}
do_test select4-7.4 {
execsql2 {
SELECT * FROM t1 WHERE n IN (SELECT n FROM t1 UNION SELECT x FROM t2)
ORDER BY n LIMIT 2
}
} {n 1 log 0 n 2 log 1}
finish_test