24 Jun
2013
24 Jun
'13
8:15 p.m.
hum, should i use this function in sql_select.cc? remove_eq_conds() /** Remove const and eq items. Return new item, or NULL if no condition cond_value is set to according: COND_OK query is possible (field = constant) COND_TRUE always true ( 1 = 1 ) COND_FALSE always false ( 1 = 2 ) SYNPOSIS remove_eq_conds() thd THD environment cond the condition to handle cond_value the resulting value of the condition NOTES calls the inner_remove_eq_conds to check all the tree reqursively RETURN *COND with the simplified condition */