The error causes execution to transfer to the associated CATCH block inside usp_GenerateError where the stored procedure usp_RethrowError is executed to raise the constraint violation error information using RAISERROR.

• 此错误使执行传递到usp_GenerateError内关联的CATCH块,存储过程usp_RethrowError在此块内执行以使用RAISERROR生成违反约束错误。