| QUARTER function | QUARTER function [Date and time] |
| queries : SELECT statement | SELECT statement |
| QUERY_PLAN_ON_OPEN option | Transact-SQLcompatibility options QUERY_PLAN_ON_OPEN option |
| QUIT statement : syntax | EXIT statement [ISQL] |
| quotation marks : identifiers | Statement elements |
| QUOTED_IDENTIFIER option | Transact-SQLcompatibility options QUOTED_IDENTIFIER option The quoted_identifier option |