sub-queries correlated-subquery synchronized-subquery
join cross-join inner-join
ORDER-BY-clause
Oracle NULL-values General-Functions NVL
WHERE-clause DELETE-statement
General-Functions COALESCE IF-ELSEIF-ENDIF
WHERE-clause operators
phantom-read range-locks isolation transactions non-repeatable-reads
collation binary-collation character-sets case-insensitive-collation
NULL-values
