Technology · Reference dataset
SQL Server Advanced Functions
SQL Server advanced functions and descriptions of their uses.
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The 10 most recently added of 12 records · Select a column heading to sort.
| ID | Function | Description |
|---|---|---|
| 12 | USER_NAME | Returns the database user name based on the specified id |
| 11 | SYSTEM_USER | Returns the login name for the current user |
| 10 | SESSIONPROPERTY | Returns the session settings for a specified option |
| 9 | SESSION_USER | Returns the name of the current user in the SQL Server database |
| 8 | NULLIF | Returns NULL if two expressions are equal |
| 7 | ISNUMERIC | Tests whether an expression is numeric |
| 6 | ISNULL | Return a specified value if the expression is NULL, otherwise return the expression |
| 5 | IIF | Returns a value if a condition is TRUE, or another value if a condition is FALSE |
| 4 | CURRENT_USER | Returns the name of the current user in the SQL Server database |
| 3 | CONVERT | Converts a value (of any type) into a specified datatype |
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Scope and sources
Last checked against sources: October 15, 2026.
Last changed: July 17, 2026. This is when we last changed the data or its description. It doesn’t mean the data runs up to that date.
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