MySQL collation character-sets
cross-join on-clause join inner-join MySQL
HAVING-clause COUNT-Function aggregate-functions
CREATE-statement
isolation SERIALIZABLE transactions REPEATABLE-READ phantom-read
COUNT-Function aggregate-functions NULL-values
NULL-values General-Functions NV2
MIN-Function AVG-Function FIRST-Function MAX-Function COUNT-Function LAST-Function aggregate-functions SUM-Function
NULL-values constraints NOT-NULL-constraint
CASE-Function