sub-queries correlated-subquery synchronized-subquery
NULL-values unique-key primary-key constraints
UPDATE-clause
LCASE-Function UCASE-Function ROUND-Function MID-Function scalar-functions FORMAT-Function NOW-Function LEN-Function
MySQL collation character-sets
HAVING-clause COUNT-Function aggregate-functions
DROP-statement DROP-TABLE
sub-queries
NV2 NULLIF NULL-values General-Functions COALESCE NVL
Oracle NULL-values General-Functions NVL