collation binary-collation character-sets
ORDER-BY-clause
CASE-Function
NULL-values unique-key primary-key constraints
ORDER-BY-clause WHERE-clause SELECT-clause queries order-of-operations FROM-clause HAVING-clause GROUP-BY-clause
HAVING-clause COUNT-Function aggregate-functions
Oracle NULL-values General-Functions NVL
join cross-join inner-join
WHERE-clause DELETE-statement
INSERT-statement