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Fixed bug #12762:

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allowed set functions aggregated in outer subqueries, allowed nested set functions.
This commit is contained in:
igor@rurik.mysql.com
2005-10-15 14:32:37 -07:00
parent a5c5b2c658
commit c136e9c43b
25 changed files with 772 additions and 75 deletions
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13
sql/sql_class.h
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@ -779,19 +779,6 @@ public:
field list can not contain duplicates.
*/
bool set_query_id;
/*
This variable is used in post-parse stage to declare that sum-functions,
or functions which have sense only if GROUP BY is present, are allowed.
For example in queries
SELECT MIN(i) FROM foo
SELECT GROUP_CONCAT(a, b, MIN(i)) FROM ... GROUP BY ...
MIN(i) have no sense.
Though it's grammar-related issue, it's hard to catch it out during the
parse stage because GROUP BY clause goes in the end of query. This
variable is mainly used in setup_fields/fix_fields.
See item_sum.cc for details.
*/
bool allow_sum_func;
LEX_STRING name; /* name for named prepared statements */
LEX *lex; // parse tree descriptor