USER (T-SQL)

Allows a system-supplied value for the current user’s database username to be inserted into a table when no default value is specified.

Syntax

USER

Return Types

char

Remarks

USER provides the same functionality as the USER_NAME system function.

Use USER with DEFAULT constraints in either the CREATE TABLE or ALTER TABLE statements, or use as any standard function.

Examples

A. Use USER to return the current user’s database username

This example declares a variable as char, assigns the current value of USER to it, and then prints the variable with a text description.

DECLARE @usr char(30)

SET @usr = user

SELECT 'The current user’s database username is: '+ @usr

GO

Here is the result set:

-----------------------------------------------------------------------

The current user’s database username is: dbo                           

(1 row(s) affected)

B. Use USER with DEFAULT constraints

This example creates a table using USER as a DEFAULT constraint for the salesperson of a sales row.

USE pubs

GO

CREATE TABLE inventory2

(

 part_id int IDENTITY(100, 1) NOT NULL,

 description varchar(30) NOT NULL,

 entry_person varchar(30) NOT NULL DEFAULT USER

)

GO

INSERT inventory2 (description)

VALUES ('Red pencil')

INSERT inventory2 (description)

VALUES ('Blue pencil')

INSERT inventory2 (description)

VALUES ('Green pencil')

INSERT inventory2 (description)

VALUES ('Black pencil')

INSERT inventory2 (description)

VALUES ('Yellow pencil')

GO

This is the query to select all information from the inventory2 table:

SELECT *

FROM inventory2

ORDER BY part_id

GO

Here is the result set (note the entry-person value):

part_id     description                    entry_person                  

----------- ------------------------------ -----------------------------

100         Red pencil                     dbo                           

101         Blue pencil                    dbo                           

102         Green pencil                   dbo                           

103         Black pencil                   dbo                           

104         Yellow pencil                  dbo                           

(5 row(s) affected)

See Also