"SQL Server 2008": [1, 2] "SQL Server 2012": [2, 3] "SQL Server 2016": [4, 5] "SQL Server 2019": [5, 4] 迁移指南 在将旧代码迁移到新版本时,及时转换语法至关重要。我时常会使用以下步骤进行代码转换。 -SELECT * INTO #TempTable FROM TableName+SE
-- 从 Employees 表中查询 ID 和 Name 并插入临时表INSERTINTO#TempTable (ID, Name)SELECTEmployeeID,EmployeeNameFROMEmployeesWHEREIsActive=1;-- 例如只查询活跃的员工 1. 2. 3. 4. 5. 3. 从临时表中查询特定列 现在,我们已经将查询结果插入到临时表中,接下来我们可以从临时表中选择特定列。如选择 ID...
在使用select into前,可以先做一下判断: ifOBJECT_ID('tempdb..#temp')isnotnulldroptable#tempselect*into#tempfromsysobjectsselect*from#temp 3. 利用select into生成一个空表 如果要生成一个空的表结构,不包含任何数据,可以给定一个恒不等式如下: select*into#tempfromsysobjectswhere1=2select*from#temp 二....
在SQL Server中,SELECT INTO 语句用于从一个查询结果集中创建一个新表,并将结果插入到新表中。如果目标表不存在,SELECT INTO 会自动创建该表,并将查询的结果插入其中。如果目标表已经存在,则会报错。 基本语法 sql SELECT column1, column2, ... INTO new_table FROM old_table WHERE condition; new_table ...
--创建局部临时表CREATETABLE#TempTable(idINT,NAMEVARCHAR(10))--根据已有表,创建临时表SELECT*INTO#TempTable2FROMtablename--创建局部临时表, 带有聚集索引CREATETABLE#tempWithCLUSTERED([SID]INTPRIMARYKEYCLUSTERED, modelVARCHAR(50))--创建全局临时表CREATETABLE##TempTable3(idINT,NAMEVARCHAR(10))--根据已有...
SELECT INTONameSELECT INTO -- 从一个查询的结果中创建一个新表SynopsisSELECT [ ALL | DISTINCT [ ON ( expression [, ...] ) ] ]* | expression [ AS output_name ] [, ...]INTO [ TEMPORARY | TEMP ] [ TABLE ] new_table[ FROM from_item [, ...] ][ WHERE condition ][ GROUP BY ...
Create Table TestInto1(Id int not null,Name varchar(10) NOT NULL)Insert Into TestInto1 Values(1,'Mani');Insert Into TestInto1 Values(2,'John');Select Id,Name as Name INTO #T3 from TestInto1Union AllSelect NULL,NULLDelete From #T3 Where Id is NULL...
(SELECT top7*FROM jobs ORDER BY job_id ASC)a ORDER BY job_id DESC ) b ORDER BY job_id ASC 取第2到第3条记录 [对1方法一] select IDENTITY(int,1,1)asiid,*into #temptable from discounts select top2*from #temptable where iid>=2 ...
In SQL Server 2000, a table variable can’t be the destination of a SELECT INTO statement or a INSERT EXEC (now fixed); You can’t call user-defined functions from CHECK constraints, DEFAULT values, and computed columns in the table variable. The only constraints that you’re allowed ...
CREATETABLE#tempSessionC ( Column1INTNOTNULL, Column2NVARCHAR(4000) ); 首先,建立下表值函式以篩選@@spid。 函數可用於所有您從會話臨時表轉換過來的 "SCHEMA_ONLY" 資料表。 SQL CREATEFUNCTIONdbo.fn_SpidFilter (@SpidFilterSMALLINT)RETURNSTABLEWITHSCHEMABINDING, NATIVE...