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SQL Server Advanced Functions

SQL Server Advanced Functions, with function, and description.

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ID Function Description
1 CAST Converts a value (of any type) into a specified datatype
2 COALESCE Returns the first non-null value in a list
3 CONVERT Converts a value (of any type) into a specified datatype
4 CURRENT_USER Returns the name of the current user in the SQL Server database
5 IIF Returns a value if a condition is TRUE, or another value if a condition is FALSE
6 ISNULL Return a specified value if the expression is NULL, otherwise return the expression
7 ISNUMERIC Tests whether an expression is numeric
8 NULLIF Returns NULL if two expressions are equal
9 SESSION_USER Returns the name of the current user in the SQL Server database
10 SESSIONPROPERTY Returns the session settings for a specified option

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Last changed: July 17, 2026. This may reflect a change to the data or its description; it is not a coverage-through date.

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