ORDER-BY-clause HAVING-clause queries FROM-clause order-of-operations GROUP-BY-clause WHERE-clause SELECT-clause
COUNT-Function MAX-Function FIRST-Function SUM-Function AVG-Function LAST-Function MIN-Function aggregate-functions
Oracle NULL-values General-Functions NVL
phantom-read transactions isolation SQL-SERIALIZABLE
WHERE-clause DELETE-statement
MySQL limit-keyword
cross-join inner-join MySQL join on-clause
sub-queries
DROP-statement DROP-TABLE
MySQL collation character-sets
