[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] queries joins cross joins equijoin full joins joining multiple 2nd 3rd 4th joining two tables 2nd 3rd 4th 5th LEFT joins 2nd 3rd RIGHT joins 2nd 3rd self joins 2nd 3rd 4th log files optimization ANALYZE command benchmarking 2nd 3rd built-in query optimization 2nd 3rd EXPLAIN command 2nd 3rd 4th 5th 6th indexes, adding OPTIMIZE TABLE command slow queries, finding 2nd slow query log 2nd 3rd SELECT statement subqueries Boolean expression 2nd 3rd 4th 5th 6th derived table 2nd 3rd single-value 2nd 3rd types of QUICK clause DELETE statement quote characters identifiers quote() function |