SQL: Speed Improvement - Cluttered union query
- by vol7ron
SELECT * FROM (
SELECT a.user_id, a.f_name, a.l_name, b.user_id, b.f_name, b.l_name
FROM current_tbl a
INNER JOIN import_tbl b
ON ( a.user_id = b.user_id )
UNION
SELECT a.user_id, a.f_name, a.l_name, b.user_id, b.f_name, b.l_name
FROM current_tbl a
INNER JOIN import_tbl …
