NULL-values General-Functions NV2
MySQL CASE-Function
GROUP-BY-clause queries WHERE-clause ORDER-BY-clause order-of-operations SELECT-clause HAVING-clause FROM-clause
queries statements clauses expressions insignificant-whitespaces language-elements predicates
collation binary-collation character-sets
ROWNUM Oracle
DROP-statement
sub-queries correlated-subquery synchronized-subquery
General-Functions COALESCE IF-ELSEIF-ENDIF
cross-join join on-clause MySQL inner-join