Scalar SQL function example PDF RSS Focus mode The following example creates a function that compares two numbers and returns the larger value. For more information, see CREATE FUNCTION.create function f_sql_greater (float, float) returns float stable as $$ select case when $1 > $2 then $...
The VALUE function takes two or more arguments and returns the first argument in the series that resolves to a non-null value. For example, the following statement retrieves the commission of every employee by querying the COMM column of Q.STAFF. If the COMM column contains a null value for...
The CREATE FUNCTION (SQL scalar, table, or row) statement is used to define a user-defined SQL scalar, table, or row function. A scalar function returns a single value each time it is invoked, and is generally valid wherever an SQL expression is valid. A table function can be used in...
The following example creates a multi-statement scalar function (scalar UDF) in the AdventureWorks2022 database. The function takes one input value, a ProductID, and returns a single data value, the aggregated quantity of the specified product in inventory. SQL Copy IF OBJECT_ID (N'dbo.ufn...
] function_name ( [ { @parameter_name [ AS ] [ type_schema_name. ] parameter_data_type [ NULL ] [ = default ] [ READONLY ] } [ , ...n ] ] ) RETURNS return_data_type [ WITH <function_option> [ , ...n ] ] [ AS ] BEGIN function_body RETURN scalar_expression END [ ;...
SELECT{fn<function_name>[ (<argument>,...n) ] } Functions The following tables list ODBC scalar functions that aren't duplicated in Transact-SQL. String Functions FunctionDescription BIT_LENGTH( string_exp ) (ODBC 3.0)Returns the length in bits of the string expression. Returns...
Scalar Function Information The following values of the InfoType argument return information about the scalar functions supported by the data source and the driver. For more information about scalar functions, see Appendix E: Scalar Functions. SQL_CONVERT_FUNCTIONS SQL_NUMERIC_FUNCTIONS SQL_STRING_FUNCTI...
13156 Disables the fix for the "UDF invocation with a large number of scalar expression re-evaluations can cause a non-yielding scheduler error" issue. This original fix might sometimes cause a performance regression. For more information, see KB4538581.Scope: Global only. 15025 Disables the Az...
This example uses a numeric expression,(GETDATE() + 1), and scalar system functionsGETDATEandSYSDATETIME, as arguments forenddate. SQL USEAdventureWorks2022; GOSELECTDATEDIFF(day,'2007-05-07 09:53:01.0376635',GETDATE() +1)ASNumberOfDaysFROMSales.SalesOrderHeader; GOUSEAdventureWorks2022; GOSELE...
] function_name ( [ { @parameter_name [ AS ] [ type_schema_name. ] parameter_data_type [ NULL ] [ = default ] [ READONLY ] } [ , ...n ] ] ) RETURNS return_data_type [ WITH <function_option> [ , ...n ] ] [ AS ] BEGIN function_body RETURN scalar_expr...