CREATE TABLE Users:创建一个名为Users的数据库表。 步骤3: 将临时表的数据插入数据库表 接下来,我们需要从临时表中将数据插入永久表。 AI检测代码解析 -- 将临时表中的数据插入到永久表中INSERTINTOUsers(ID,Name)SELECTID,NameFROM#tempTable; 1. 2. 3. INSERT INTO Users:将数据插入到Users表中。 SELECT...
SQL Server 的MERGE语句也可以用来插入或更新临时表中的数据。它非常适合处理复杂的插入逻辑。 MERGEINTO#TempTable AS targetUSING(SELECTEmployeeID,EmployeeNameFROMEmployees)ASsourceONtarget.ID=source.EmployeeIDWHENNOTMATCHEDTHENINSERT(ID,Name)VALUES(source.EmployeeID,source.EmployeeName); 1. 2. 3. 4. 5....
drop table #temp select * into #temp from sysobjects select * 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 #temp from sysobjects where 1=2 select * from #temp 二. INSERT INTO 1. 使用insert into,需要先手动...
第二个是向临时表中插入数据,I/O为61514,我们很容易看到,这一句占用了整个sp的大概95%以上的成本。如果我们把这句insert into #temptable搞定,整个sp的成本自然就下来了。所以我们需要把这句insert搞出来。 但是慢着!default情况下,sqlserver的results只显示很少的字符,第二行的sql,我们根本抓不全的,所以我们需要...
Insert the rows from the results of the SELECT statement If row insertion fails, the temporary table will exist, but it will be empty. If you don’t want that to happen, use explicit transactions. SELECT INTO Temp Table Examples
sql server查询优化器只会把表变量当作里面只有1条数据或没有数据的表对待,脚本演示如下所示: -- 创建表变量示例 DECLARE @tablevar TABLE (id int,NAME varchar(10)) INSERT INTO @tablevar(id,name) SELECT TOP 1000 ROW_NUMBER() OVER(ORDER BY number ) AS id, number FROM master..spt_values ...
INTO Is an optional keyword that can be used between INSERT and the target table. server_name Applies to: SQL Server 2008 (10.0.x) and later. Is the name of the linked server on which the table or view is located. server_name can be specified as a linked server name, or by using ...
INTO Is an optional keyword that can be used between INSERT and the target table. server_name Applies to: SQL Server 2008 (10.0.x) and later. Is the name of the linked server on which the table or view is located. server_name can be specified as a linked server name, or by using ...
INTO Is an optional keyword that can be used between INSERT and the target table. server_name Applies to: SQL Server 2008 (10.0.x) and later. Is the name of the linked server on which the table or view is located. server_name can be specified as a linked server name, or by using ...
INTO Is an optional keyword that can be used between INSERT and the target table. server_name Applies to: SQL Server 2008 (10.0.x) and later. Is the name of the linked server on which the table or view is located. server_name can be specified as a linked server name, or by using ...