Sintáxis:
INSERT INTO class_name [(attr1, ...attrN)]
VALUES (expr1,..exprN) |
SELECT [DISTINCT [ON attrN]]
expr1, ...exprN
[FROM from_clause]
[WHERE qual]
[GROUP BY group_list]
[HAVING having_clause]
[ { UNION [ALL] | INTERSECT | EXCEPT } SELECT ...];