SQL 存储过程中的IF_BEGIN_END作用域

USE [DB_NAME]
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER PROCEDURE [DBO].[PROC_TEST_IF_BEGIN END]
AS
BEGIN

SET NOCOUNT ON;

IF (DAY(GETDATE())=1)
BEGIN
PRINT 'A'
END

IF (DAY(GETDATE())=19)
BEGIN
PRINT 'A19'
END

IF (DAY(GETDATE())=20)
BEGIN
PRINT 'AAAA20'
END

IF OBJECT_ID('TEMPDB..#BASE') IS NOT NULL
BEGIN
PRINT 'B'
END

END

　　假设今天是19号， 执行存储过程 EXEC PROC_Test_IF_BEGIN END

得到什么？

答案：a19