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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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1
sql/sql_class.h
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@ -3531,6 +3531,7 @@ public:
class select_dumpvar :public select_result_interceptor {
ha_rows row_count;
Item_func_set_user_var **set_var_items;
public:
List<my_var> var_list;
select_dumpvar() { var_list.empty(); row_count= 0;}