SQL Server 2012 - 数据更新操作

Posted 2020-09-05 i-shanghai

SELECT  *
FROM    dbo.Student;

--1， 插入数据  Insert ,逗号分隔可以同时插入多条
INSERT  dbo.Student
        ( StuID, Class, StuName, StuEnName, StuAge, StuBirthday, StuSex,
          Height, Remark )
VALUES  ( ‘007‘, -- StuID - varchar(10)
          3, -- Class - int
          N‘呵呵‘, -- StuName - nvarchar(50)
          ‘Hehe‘, -- StuEnName - varchar(50)
          22, -- StuAge - int
          GETDATE(), -- StuBirthday - datetime
          N‘男‘, -- StuSex - nvarchar(10)
          190, -- Height - int
          ‘test‘  -- Remark - text
          ),
        ( ‘008‘, -- StuID - varchar(10)
          3, -- Class - int
          N‘你好‘, -- StuName - nvarchar(50)
          ‘Nihao‘, -- StuEnName - varchar(50)
          25, -- StuAge - int
          GETDATE(), -- StuBirthday - datetime
          N‘女‘, -- StuSex - nvarchar(10)
          190, -- Height - int
          ‘test‘  -- Remark - text
          );

--2， 从一个表网另外一个表中写入数据
INSERT  INTO dbo.Student
        SELECT  ‘009‘ ,
                Class ,
                ‘猫咪‘ ,
                ‘Kitty‘ ,
                StuAge ,
                StuBirthday ,
                StuSex ,
                Height ,
                Remark
        FROM    dbo.Student
        WHERE   StuID = ‘008‘;

-- 3, OUTPUT 抛出写入的StuID
DECLARE @stuId VARCHAR(10)
INSERT  dbo.Student
        ( StuID, Class, StuName, StuEnName, StuAge, StuBirthday, StuSex,
          Height, Remark )
OUTPUT  Inserted.StuID
VALUES  ( ‘010‘, -- StuID - varchar(10)
          3, -- Class - int
          N‘叮当‘, -- StuName - nvarchar(50)
          ‘DingDang‘, -- StuEnName - varchar(50)
          22, -- StuAge - int
          GETDATE(), -- StuBirthday - datetime
          N‘男‘, -- StuSex - nvarchar(10)
          190, -- Height - int
          ‘test‘  -- Remark - text
          )

		  
--4 ,OUTPUT 抛出写入的另外一张物理表中（历史表）
DECLARE @stuIdTable  TABLE(id INT)
INSERT  dbo.Student
        ( StuID, Class, StuName, StuEnName, StuAge, StuBirthday, StuSex,
          Height, Remark )
OUTPUT  Inserted.StuID INTO @stuIdTable  -- OUTPUT INTO只能写入表中
VALUES  ( ‘012‘, -- StuID - varchar(10)
          3, -- Class - int
          N‘Vanilla‘, -- StuName - nvarchar(50)
          ‘香草‘, -- StuEnName - varchar(50)
          22, -- StuAge - int
          GETDATE(), -- StuBirthday - datetime
          N‘男‘, -- StuSex - nvarchar(10)
          190, -- Height - int
          ‘test‘  -- Remark - text
          )
SELECT * FROM @stuIdTable

-- 5，更新数据
UPDATE dbo.Student SET Height=Height+10 WHERE Height IS NOT NULL

-- 6, 根据另外一张表进行数据更新:在两个表建立关系的情况下进行更新
-- Join的方式进行多表更新
UPDATE T 
SET T.Remark = ‘班级01的学生‘ 
FROM dbo.Student AS T  JOIN dbo.ClassInfo AS C
ON t.Class=c.ID WHERE C.ID=‘1‘
-- Where的方式进行多表更新
UPDATE T 
SET T.Remark = ‘班级02的学生‘ 
FROM dbo.Student AS T  , dbo.ClassInfo AS C
where t.Class=c.ID and C.ID=‘2‘

-- 7， OUTPUT查看更新前、后的数据
UPDATE dbo.Student SET StuSex=‘女‘
 OUTPUT Inserted.StuSex,Deleted.StuSex
WHERE StuID=‘007‘

-- 8, Update中Set语句后的命令是同时执行的，没有先后顺序
UPDATE dbo.Student SET StuSex=‘男‘,StuName=StuName+‘-‘+StuSex
WHERE  StuID=‘007‘
SELECT * FROM dbo.Student  WHERE  StuID=‘007‘
   -- 两个字段进行值的互换
UPDATE dbo.Student SET StuAge=Height,Height=StuAge
WHERE  StuID=‘007‘
SELECT * FROM dbo.Student  WHERE  StuID=‘007‘

-- 9, Delete
SELECT * INTO Student_His FROM dbo.Student WHERE 1=2

DELETE dbo.Student 
OUTPUT Deleted.StuID,Deleted.Class,Deleted.StuName,Deleted.StuEnName,Deleted.StuBirthday,Deleted.StuSex,Deleted.Height,Deleted.Remark
INTO dbo.Student_His( StuID,Class,StuName,StuEnName,StuBirthday,StuSex,Height,Remark)
WHERE  StuID=‘007‘

--10, Truncate Table = delete tablename (不带任何条件)：清空表，重置自增列，日志小，操作更快
TRUNCATE TABLE dbo.Student_His 
SELECT *  FROM  [dbo].[Student_His]