diff options
| -rw-r--r-- | sql/item_strfunc.cc | 20 | ||||
| -rw-r--r-- | sql/item_strfunc.h | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/sql/item_strfunc.cc b/sql/item_strfunc.cc index 594049b3870..dc9d57b1d9d 100644 --- a/sql/item_strfunc.cc +++ b/sql/item_strfunc.cc @@ -1967,6 +1967,26 @@ bool Item_func_set_collation::fix_fields(THD *thd,struct st_table_list *tables, return 0; } +bool Item_func_set_collation::eq(const Item *item, bool binary_cmp) const +{ + /* Assume we don't have rtti */ + if (this == item) + return 1; + if (item->type() != FUNC_ITEM) + return 0; + Item_func *item_func=(Item_func*) item; + if (arg_count != item_func->arg_count || + func_name() != item_func->func_name()) + return 0; + Item_func_set_collation *item_func_sc=(Item_func_set_collation*) item; + if (set_collation != item_func_sc->set_collation) + return 0; + for (uint i=0; i < arg_count ; i++) + if (!args[i]->eq(item_func_sc->args[i], binary_cmp)) + return 0; + return 1; +} + String *Item_func_charset::val_str(String *str) { diff --git a/sql/item_strfunc.h b/sql/item_strfunc.h index becb7981acd..997d9c8d834 100644 --- a/sql/item_strfunc.h +++ b/sql/item_strfunc.h @@ -508,6 +508,7 @@ public: max_length = args[0]->max_length; str_value.set_charset(set_collation); } + bool eq(const Item *item, bool binary_cmp) const; const char *func_name() const { return "set_collation"; } }; |