SQLServer中RAISERROR的用法小结

RAISEERROR (message_string, severity, state)

DECLARE @ErrorMessage NVARCHAR(4000) = N'An error occurred.';
DECLARE @ErrorSeverity INT = 16;
DECLARE @ErrorState INT = 1;

-- 使用 RAISEERROR 抛出错误
RAISEERROR (@ErrorMessage, @ErrorSeverity, @ErrorState);

DECLARE @ProductName NVARCHAR(50) = 'ProductABC';
DECLARE @ErrorMessage NVARCHAR(4000) = N'Product ' + @ProductName + ' not found.';
DECLARE @ErrorSeverity INT = 16;
DECLARE @ErrorState INT = 1;

-- 使用 RAISEERROR 抛出带动态消息的错误
RAISEERROR (@ErrorMessage, @ErrorSeverity, @ErrorState);

CREATE PROCEDURE sp_GetProductDetails
    @ProductId INT
AS
BEGIN
    IF NOT EXISTS (SELECT * FROM Products WHERE ProductId = @ProductId)
    BEGIN
        DECLARE @ErrorMessage NVARCHAR(4000) = N'Product with ID ' + CAST(@ProductId AS NVARCHAR) + ' not found.';
        DECLARE @ErrorSeverity INT = 16;
        DECLARE @ErrorState INT = 1;

        RAISEERROR (@ErrorMessage, @ErrorSeverity, @ErrorState);
    END

    -- 继续执行其他逻辑
    SELECT * FROM Products WHERE ProductId = @ProductId;
END