IF OBJECT_ID('tempdb.. #tempTable')ISNOTNULLBEGINDROPTABLE#tempTable;END;SELECT*INTO#tempTableFROMtable1;SELECT*FROM#tempTableDROPTABLE#tempTable 2. 复制表中一些字段值插入到另外一张表中——insert into 复制表table1中某几列数据插入(更新)到表table2中的某几列 table2必须已经存在,其字段不需要和...
6: create clustered index #table_index1 on #table (empid asc ) 7: create nonclustered index #table_index2 on #table (Salary) include (Department,empid ) 8: insert into #table select S.empid,S.empname,T.deptname,S.salary from Employees s 9: inner join Departments T ON S.deptid =T...
select * from 别名.库名.dbo.表名insert 库名.dbo.表名 select * from 别名.库名.dbo.表名select * into 库名.dbo.新表名 from 别名.库名.dbo.表名go 5 获取一个表中所有的字段信息 先创建一个视图 Create view fielddesc asselect as table_name, as field_name, as type,c.length as length,...
INSERTINTO#temptable VALUES ('张三','1994-01-01'), ('李四','1994-12-01');--注:测试日期是2021年10月31日 SELECTName, DATEDIFF(YEAR,Brithday,GETDATE())ASAge,--精确到年 CONVERT(INT,DATEDIFF(DAY,Brithday,GETDATE())/365.25)ASAge--精确到日 FROM#temptable; --结果:执行这段语句的日期是2...
1:Create Table#temp(Empid int primary key clustered,Salary_Tax float)2:Create nonclustered index #temp_Index1 on#temp(Empid)include(Salary_Tax)3:insert into #temp select Empid,(Salary-100)assalary_Tax from Employees4:select*from #temp ...
1:create procedure Performance_Solution_Table_Paramters @Temptable Specialtable Readonly2:as3:begin4:select*from @Temptable5:end6:Finally,execute the stored procedure:7:declare @temptable_value specialtable8:insert into @temptable_value select'1','Jone'union select'2','Bill'9:exec dbo.SP_Result...
SELECT...INTO...不是标准SQL,该语句会创建新表并将查询结果集数据插入到表中,句式: SELECTfield1[,field2]INTOtarget_tableFROMraw_table; 目标表的结构和数据是基于源表的,但,不会从源表复制:约束、索引、触发器和权限。 INSERT...EXEC... 该语句可将存储过程或动态SQL处理的结果集插入到目标表中,句式:...
CREATE TABLE #temptable (col1 INT); GO INSERT INTO #temptable VALUES (10); GO SELECT * FROM #temptable; GO IF OBJECT_ID(N'tempdb..#temptable', N'U') IS NOT NULL DROP TABLE #temptable; GO --Test the drop. SELECT * FROM #temptable; D. 使用 IF EXISTS 來卸除資料表 適用於...
CREATE TABLE #temptable (col1 INT); GO INSERT INTO #temptable VALUES (10); GO SELECT * FROM #temptable; GO IF OBJECT_ID(N'tempdb..#temptable', N'U') IS NOT NULL DROP TABLE #temptable; GO --Test the drop. SELECT * FROM #temptable; D. 使用 IF EXISTS 删除表 适用范围:SQL...
create table #temp (RecvSM_ID int, User_ID int, MsgType_ID int, OrgAddr varchar(128), DestAddr varchar(128), RecvTime datetime, SM_Content varchar(6000), DealSign tinyint, DealTime datetime, IsWait bit, ReMsgType_ID int ,