| object_id Adaptive Server Enterprise function | System functions |
| object_name Adaptive Server Enterprise function | System functions |
| ODBC: declaring static cursors | DECLARE CURSOR statement [ESQL] [SP] |
| OLAP: GROUPING function | GROUPING function [Aggregate] |
| OLAP: ROLLUP operation | SELECT statement |
| ON EXCEPTION RESUME clause: about | CREATE PROCEDURE statement |
| ON phrase: search conditions | Search conditions |
| ON_TSQL_ERROR option: and ON EXCEPTION RESUME clause | CREATE PROCEDURE statement |
| OPEN statement: SQL syntax | OPEN statement [ESQL] [SP] |
| opening: cursors | OPEN statement [ESQL] [SP] |
| OPENXML function: SQL syntax | OPENXML function [String] |
| operating system: executing commands | SYSTEM statement [Interactive SQL] |
| operator precedence: SQL syntax | Operator precedence |
| operators: about | Operators |
| operators: arithmetic operators | Arithmetic operators |
| operators: bitwise operators | Bitwise operators |
| operators: comparison operators | Comparison operators |
| operators: logical operators description | Logical operators |
| operators: precedence of operators | Operator precedence |
| operators: string operators | String operators |
| optimization: defining existing tables and | CREATE EXISTING TABLE statement |
| optimizer plans: getting text specification | EXPLAIN statement [ESQL] |
| optimizer statistics: dropping | DROP STATISTICS statement |
| optimizer: CREATE STATISTICS statement | CREATE STATISTICS statement |
| optimizer: explicit selectivity estimates | Explicit selectivity estimates |
| OPTION clause: CREATE SYNCHRONIZATION USER | CREATE SYNCHRONIZATION USER statement [MobiLink] |
| options: about | SET OPTION statement |
| options: getting values | GET OPTION statement [ESQL] |
| options: in the system tables | SYSOPTION system table |
| options: initial settings | sp_login_environment system procedure sp_tsql_environment system procedure |
| options: MobiLink synchronization clients | CREATE SYNCHRONIZATION USER statement [MobiLink] |
| options: overriding | sa_server_option system procedure |
| options: QUOTED_IDENTIFIER and T-SQL compatibility | The quoted_identifier option |
| options: setting | SET OPTION statement |
| options: setting in Interactive SQL | CONFIGURE statement [Interactive SQL] SET OPTION statement [Interactive SQL] |
| options: setting in Transact-SQL | SET statement [T-SQL] |
| options: setting remote | SET REMOTE OPTION statement [SQL Remote] |
| options: system views | SYSOPTIONS system view SYSUSEROPTIONS system view |
| options: Transact-SQL compatibility | sp_tsql_environment system procedure |
| OR: bitwise operators | Bitwise operators |
| OR: logical operators description | Logical operators |
| OR: three-valued logic | Three-valued logic |
| ORDER BY clause | SELECT statement |
| order of operations: SQL operator precedence | Operator precedence |
| out of disk space: creating events for | CREATE EVENT statement |
| outer references: FROM clause | FROM clause |
| outer references: lateral derived tables | FROM clause |
| OUTPUT statement: Java data | OUTPUT statement [Interactive SQL] |
| OUTPUT statement: SQL syntax | OUTPUT statement [Interactive SQL] |