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| author | ramil/ram@mysql.com/ramil.myoffice.izhnet.ru <> | 2007-10-19 14:54:05 +0500 |
|---|---|---|
| committer | ramil/ram@mysql.com/ramil.myoffice.izhnet.ru <> | 2007-10-19 14:54:05 +0500 |
| commit | b4f558419ff3b603fbd29adfa085f2d2c8f4b379 (patch) | |
| tree | 69db6a293a097f50aa1295d09f80aad52edf2555 /sql/item_strfunc.h | |
| parent | 3d203e55e67946e505f85a7d3a4321794ece51fe (diff) | |
| download | mariadb-git-b4f558419ff3b603fbd29adfa085f2d2c8f4b379.tar.gz | |
Fix for bug #31349: ERROR 1062 (23000): Duplicate entry '' for key 'group_key'
Problem: lying to the optimizer that a function (Item_func_inet_ntoa)
cannot return NULL values leads to unexpected results (in the case group
keys creation/comparison is broken).
Fix: Item_func_inet_ntoa::maybe_null should be set properly.
Diffstat (limited to 'sql/item_strfunc.h')
| -rw-r--r-- | sql/item_strfunc.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sql/item_strfunc.h b/sql/item_strfunc.h index 6ca0b89a22b..4ffd8125422 100644 --- a/sql/item_strfunc.h +++ b/sql/item_strfunc.h @@ -683,7 +683,12 @@ public: } String* val_str(String* str); const char *func_name() const { return "inet_ntoa"; } - void fix_length_and_dec() { decimals = 0; max_length=3*8+7; } + void fix_length_and_dec() + { + decimals= 0; + max_length= 3 * 8 + 7; + maybe_null= 1; + } }; class Item_func_quote :public Item_str_func |