sql语句各种九九乘法表

下面用while 和 if 条件写的SQL语句的四种九九乘法表

 --9x9 左下角

 DECLARE @I INT ,@J INT,@S VARCHAR(100)
 SET @I=1
 WHILE @I<10
 BEGIN
 SET @J=1
 SET @S=''
 WHILE @J<=@I
 BEGIN
 SET @S=@S+CAST(@J AS CHAR(1))+'*'+CAST(@I AS CHAR(1))+'='+CAST((@I*@J)AS CHAR(3))
 SET @J=@J+1
 END
 PRINT @S
 SET @I=@I+1
 END

结果：

 --9X9 右下角
 DECLARE @I INT ,@J INT,@S VARCHAR(100)
 SET @I=1
 WHILE @I<10
 BEGIN
 SET @J=9
 SET @S=''
 WHILE @J>0
 BEGIN
 IF @J>@I
 BEGIN
 SET @S=@S+'       ' --七个空格
 END
 ELSE
 BEGIN
 SET @S=@S+CAST(@I AS CHAR(1))+'*'+CAST(@J AS CHAR(1))+'='+CAST((@I*@J)AS CHAR(3))
 END
 SET @J=@J-1
 END
 PRINT @S
 SET @I=@I+1
 END

结果：

--9X9右上角
DECLARE @I INT ,@J INT,@S VARCHAR(100)
SET @I=1
WHILE @I<10
BEGIN
SET @J=1
SET @S=''
WHILE @J<10
BEGIN
IF @J<@I
BEGIN
SET @S=@S+'       '--
END
ELSE
BEGIN
SET @S=@S+CAST(@I AS CHAR(1))+'*'+CAST(@J AS CHAR(1))+'='+CAST((@I*@J)AS CHAR(3))
END
SET @J=@J+1
END
PRINT @S
SET @I=@I+1
END

结果：

--9X9左上角

DECLARE @I INT ,@J INT,@S VARCHAR(100)
SET @I=1
WHILE @I<10
BEGIN
SET @J=@I
SET @S=''
WHILE @J<10
BEGIN
SET @S=@S+CAST(@I AS CHAR(1))+'*'+CAST(@J AS CHAR(1))+'='+CAST((@I*@J)AS CHAR(3))
SET @J=@J+1
END
PRINT @S
SET @I=@I+1
END

结果：