While trying to help somebody on IRC with slow queries against information_schema i stumbled across the following EXPLAIN buglet (much reduced from the original one and does not make a lot of sense therefore):
foo=# explain SELECT * FROM information_schema.constraint_column_usage JOIN information_schema.key_column_usage ON key_column_usage.constraint_name = constraint_column_usage.constraint_name; ERROR: record type has not been registered Stefan ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
