predicates language-elements expressions statements clauses queries insignificant-whitespaces
sub-queries correlated-subquery synchronized-subquery
NULLIF General-Functions COALESCE NVL NV2 NULL-values
Oracle NULL-values General-Functions NVL
WHERE-clause DELETE-statement
INSERT-statement
HAVING-clause COUNT-Function aggregate-functions
inner-join join MySQL cross-join on-clause
MySQL limit-keyword
SELECT-clause
