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Bug #12408412: GROUP_CONCAT + ORDER BY + INPUT/OUTPUT SAME

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USER VARIABLE = CRASH

Moved the preparation of the variables that receive the output from 
SELECT INTO from execution time (JOIN:execute) to compile time 
(JOIN::prepare). This ensures that if the same variable is used in the
SELECT part of SELECT INTO it will be properly marked as non-const
for this query.
Test case added.
Used proper fast iterator.
This commit is contained in:
Georgi Kodinov
2012-03-09 15:04:49 +02:00
parent 6242d245ba
commit bc7d8dc623
4 changed files with 52 additions and 7 deletions
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6
mysql-test/r/user_var.result
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@ -485,4 +485,10 @@ f1 f2
1 4
DROP TRIGGER trg1;
DROP TABLE t1;
#
# Bug #12408412: GROUP_CONCAT + ORDER BY + INPUT/OUTPUT
# SAME USER VARIABLE = CRASH
#
SET @bug12408412=1;
SELECT GROUP_CONCAT(@bug12408412 ORDER BY 1) INTO @bug12408412;
End of 5.5 tests