NULL-values General-Functions NV2
ORDER-BY-clause
NVL General-Functions COALESCE NV2 NULL-values NULLIF
CREATE-statement DESC-command
join cross-join inner-join
join inner-join
SELECT-clause
HAVING-clause COUNT-Function aggregate-functions
aggregate-functions COUNT-Function FIRST-Function MAX-Function MIN-Function LAST-Function SUM-Function AVG-Function
WHERE-clause DELETE-statement