| WAITFOR statement: SQL syntax | WAITFOR statement |
| Watcom-SQL: DECLARE statement | DECLARE statement |
| WATCOMSQL function: SQL syntax | WATCOMSQL function [Miscellaneous] |
| web servers: altering services | ALTER SERVICE statement |
| web servers: creating | CREATE SERVICE statement |
| web servers: dropping | DROP SERVICE statement |
| web services: adding comments | COMMENT statement |
| web services: system table | SYSWEBSERVICE system table |
| WEEKS function: SQL syntax | WEEKS function [Date and time] |
| WHEN: CASE expression | CASE expressions |
| WHENEVER statement: embedded SQL syntax | WHENEVER statement [ESQL] |
| WHERE clause: search conditions | Search conditions |
| WHERE clause: SELECT statement | SELECT statement |
| WHILE statement: SQL syntax | LOOP statement LOOP statement |
| WHILE statement: Transact-SQL syntax | WHILE statement [T-SQL] |
| wide inserts | EXECUTE statement [ESQL] |
| wildcards: LIKE conditions | LIKE conditions |
| wildcards: pattern matching | PATINDEX function [String] |
| WITH CHECKPOINT option: LOAD TABLE statement | LOAD TABLE statement |
| WITH clause: SELECT statement | SELECT statement |
| WITH HOLD clause: OPEN SQL statement | OPEN statement [ESQL] [SP] |
| WITH RECURSIVE clause: SELECT statement | SELECT statement |
| words: reserved | Reserved words |
| write files: altering | ALTER WRITEFILE statement |
| write files: creating | CREATE WRITEFILE statement |
| WRITETEXT statement: Transact-SQL syntax | WRITETEXT statement [T-SQL] |