join cross-join inner-join
collation binary-collation character-sets
Oracle NULL-values General-Functions NVL
join inner-join
clauses expressions queries language-elements statements insignificant-whitespaces predicates
ORDER-BY-clause
CREATE-statement DESC-command
SELECT-clause
sub-queries correlated-subquery synchronized-subquery
MySQL DROP-statement DROP-INDEX DB2 Oracle SQL-server MS-Access