sql server update table from another table

) + '']'' from sys. sysreferences where constid = @ constid'Insert into @ constidtableSelect constid from SYS. sysreferences where fkeyid = @ objectid or rkeyid = @ objectid order by fkeyidWhile exists (select * From @ constidtable)BeginSelect top 1 @ constid = constid from @ constidtableDelete from @ constidtable where constid = @ constidInsert into @ tablescriptSelect n' -- alter table [DBO]. ['+ object_name (fkeyid) +'] With Check'From SYS. sysrefe

b.b=a.b);2 into ausing B on (a.b=b.b) when Then Update Set A.C=b.e, a.d=b.f;There are more complicated situations where multiple fields are updated from different tables, such as the D field in table A is derived from a field in the C table, and the individual feels that this situation does not need to be written in a

Today, I am struggling with this problem for a day. The following code is reproduced on the Internet. Create Partition Function pf_orders_orderdaterange (datetime)AsRange right for values ('2017-01-01 ','2017-01-01 ','2017-01-01')Go-- Create a partition schemeCreate Partition Scheme ps_ordersAsPartition pf_orders_orderdaterangeTo ([primary], [primary], [primary], [primary])Go-- Create a partition tableSp_rename 'dbo. Orders ', 'Orders _ from_sql2000_northwind'Create

Label: 1 SELECT( Case whenA.colorder=1 ThenD.nameElse NULL End) Table name,2 a.colorder field ordinal, a.name field name,3( Case when ColumnProperty(A.id,a.name,'isidentity')=1 Then '√'Else "' End) identification,4( Case when(SELECT Count(*) fromsysobjects5 WHERE(Nameinch(SELECTName fromsysindexes6 WHERE(ID=a.ID) and(indidinch 7(SELECTIndid fromSysindexkeys8 WHERE(ID=a.ID) and(colidinch 9(SELECTColid fromsyscolumnsWHERE(ID=a.ID) and(Name=( a.

Label:one of the fields in a table student (Sno, sname, age) sname type nchar (TEN) Change to int Save the Times wrong. This is the default setting for SQL Server itself, which defaults to a type that cannot be modified. You only need to remove prvent saving changes in the Tool->option->designer->table and Database d

Transferred from: http://www.cnblogs.com/yugen/archive/2010/07/25/1784749.html1. Determine if the data table existsMethod One:Use Yourdb;GoIf OBJECT_ID (n ' tablename ', n ' U ') is not nullprint ' exists 'Elseprint ' does not exist 'For example:Use Fireweb;GoIf OBJECT_ID (n ' temp_tbl ', n ' U ') is not nullprint ' exists 'Elseprint ' does not exist 'Method Two:Use [instance name]GOIF EXISTS (SELECT * FROM dbo. SysObjects WHERE id = object_id (N ' [

Insert into Phone2 (ph,attr,type,carrier) Select Top + ph,attr,type,carrier from phoneCopy the field of the table phone and the first 1000 data to the Phone2 tableA table in the database deletes duplicate data (the Phone2 table cannot exist)SELECT DISTINCT * to Phone2 from phoneTable phone data is put into phone2 (phone2 tabl