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user options Option

Use the user options option to specify global defaults for all users. A list of default query processing options is established for the duration of a user's work session. The user options option allows you to change the default values of the SET options (if the server's default settings are not appropriate). A user can override these defaults by using the SET statement. You can configure user options dynamically for new logins. After you change the setting of user options, new login sessions use the new setting; current login sessions are not affected.

Value

Configuration

Description

1

DISABLE_DEF_CNST_CHK

Controls interim or deferred constraint checking.

2

IMPLICIT_TRANSACTIONS

For dblib network library connections, controls whether a transaction is started implicitly when a statement is executed. The IMPLICIT_TRANSACTIONS setting has no effect on ODBC or OLEDB connections.

4

CURSOR_CLOSE_ON_COMMIT

Controls behavior of cursors after a commit operation has been performed.

8

ANSI_WARNINGS

Controls truncation and NULL in aggregate warnings.

16

ANSI_PADDING

Controls padding of fixed-length variables.

32

ANSI_NULLS

Controls NULL handling when using equality operators.

64

ARITHABORT

Terminates a query when an overflow or divide-by-zero error occurs during query execution.

128

ARITHIGNORE

Returns NULL when an overflow or divide-by-zero error occurs during a query.

256

QUOTED_IDENTIFIER

Differentiates between single and double quotation marks when evaluating an expression.

512

NOCOUNT

Turns off the message returned at the end of each statement that states how many rows were affected.

1024

ANSI_NULL_DFLT_ON

Alters the session's behavior to use ANSI compatibility for nullability. New columns defined without explicit nullability are defined to allow nulls.

2048

ANSI_NULL_DFLT_OFF

Alters the session's behavior not to use ANSI compatibility for nullability. New columns defined without explicit nullability do not allow nulls.

4096

CONCAT_NULL_YIELDS_NULL

Returns NULL when concatenating a NULL value with a string.

8192

NUMERIC_ROUNDABORT

Generates an error when a loss of precision occurs in an expression.

16384

XACT_ABORT

Rolls back a transaction if a Transact-SQL statement raises a run-time error.

NoteNote

Not all configuration values for user options are compatible with each other. For example, ANSI_NULL_DFLT_ON and ANSI_NULL_DFLT_OFF cannot be set at the same time.

The bit positions in user options are identical to those in @@OPTIONS. Each connection has its own @@OPTIONS function, which represents the configuration environment. When logging in to Microsoft SQL Server, a user receives a default environment that assigns the current user options value to @@OPTIONS. Executing SET statements for user options affects the corresponding value in the session's @@OPTIONS function.

All connections created after this setting is changed receive the new value.

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