Crear función escalar en SQL Server
CREATE FUNCTION [schema_name.]function_name (parameter_list)
RETURNS data_type AS
BEGIN
statements
RETURN value
END
----------------------------
CREATE FUNCTION sales.udfNetSale(
@quantity INT,
@list_price DEC(10,2),
@discount DEC(4,2)
)
RETURNS DEC(10,2)
AS
BEGIN
RETURN @quantity * @list_price * (1 - @discount);
END;
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