/* */ ' ' " " [ ] // , ; ) ( . + - / * = > < $ != [ ] SELECT DISTINCT FROM IN AS WHERE BY ORDER GROUP HAVING ASC DESC NOT AND OR FORALL EXISTS ALL ANY SOME LIKE UNION EXCEPT MOD INTERSECT ABS LISTTOSET ELEMENT FLATTEN FIRST LAST UNIQUE EXISTS SUM MIN MAX AVG COUNT IS_UNDEFINED IS_DEFINED STRUCT ARRAY SET BAG LIST UNSIGNED SHORT LONG FLOAT DOUBLE CHAR STRING BOOLEAN OCTET ENUM DATE TIME INTERVAL TIMESTAMP DICTIONARY NIL TRUE FALSE