1411
1411
enum Sumfunctype sum_func () const {return GROUP_CONCAT_FUNC;}
1412
1412
const char *func_name() const { return "group_concat"; }
1413
1413
virtual Item_result result_type () const { return STRING_RESULT; }
1414
1415
enum_field_types field_type() const
1416
1417
if (max_length/collation.collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB )