COUNT-Function LAST-Function MIN-Function aggregate-functions AVG-Function FIRST-Function SUM-Function MAX-Function
ORDER-BY-clause
HAVING-clause COUNT-Function aggregate-functions
sub-queries correlated-subquery synchronized-subquery
NULL-values General-Functions NULLIF
phantom-read transactions isolation SQL-SERIALIZABLE
MySQL collation character-sets
FROM-clause optimization
operators logical-operators
DROP-statement DROP-TABLE
