sql server update table from another table

generally the global variable of the system, as we commonly use, such as @ @Error represents the wrong number, @ @RowCount represents the number of rows affected. Let's look at the statement that creates the table variable: DECLARE @News Table(news_id int not NULL,Newstitle varchar (100),Newscontent varchar (2000),Newsdatetime datetime) Comparing temporary tables and

[a basket of rice special thin Original, reproduced please indicate from http://www.cnblogs.com/wanghafan/p/4384039.html]Prerequisites: Two tables to update the field, the associated field structure is consistentUpdate Library: FJPDI_TZGLExtract Library: fjpdi_tzgl_29Table: DatachangestemptUpdate field: REASONAssociated field: IIDGoal: Update the datachangestempt reason field in fjpdi_tzgl_29 to datachanges

1. Create a test tableCreate table t_user (ID int identity primary key,UserID varchar (50) not null,UserName varchar (50) null,DeptID int not null,Phone varchar (50) null,Fax varchar (50) null) Create table t_dept (ID int identity primary key,DeptName varchar (50) null,Phone varchar (50) null,Fax varchar (50) null) INSERT t_userSelect n '001', N 'zhang san', 1, N '000000', N '000000'UNIONAll select n '002 '

Product (pid, name, amount, nowAmount): ID, name, existing quantity, current quantityTrade (id, pid, operType, number): identifier, product identifier, operation type (warehouse receiving: 1, warehouse picking: 0), quantity Test data in the Product table: 1 Apple 100 0 2 Orange 50 0 Test data in the Trade table: 1 1 1 432 2 1 0 50

Use of the Alter command in MySQL to edit the table structure. Modify Table Name The code is as follows Copy Code ALTER TABLE test rename test1; Modify a field type The code is as follows Copy Code ALTER TABLE employee change depno depno Int (5) is no

category 11. New statement: (Insert into) Insert into book (bookname,bookprice,bookauthors) VALUES (' C # basics ', ' + ', ' Ji ') (insert bookname,bookprice,bookauthors The values of the three fields are: ' C # basics ', ' ' x ', ' Ji ')12. UPDATE statement: (Update...set ... [where]) Update book set bookprice=30 where Bookname= ' C

Tags: Service status Related Information script database state information Snapshot representationIn SQL Server replication (Replication), it is possible that the need for a new table or some tables to an existing replication (publish subscription) may occur due to changes in business requirements, which should be normal and common. However, in the existing repli

SQL Server checks whether tasks are not submitted, stops the progress, and removes the table deadlock. the SQL Server process is deadlocked. If there are uncommitted tasks in the data warehouse, the related tables will remain in the dead warehouse, affects the query of oth

A method of SQL Update multi-table joint updating You can modify the field values of one table and the other table associations based on the values of one table's fields, like an associated queryUpdate table one set

SETUpdateTime=GETDATE(), +ProductName= Case when @ProductName is NULL ThenTb_product.productnameELSE @ProductName END , AProductType= Case when @ProductType=0 ThenTb_product.producttypeELSE @ProductType END , theRecommendindex= Case when @RecommendIndex =0 ThenTb_product.recommendindexELSE @ProductType END , +Issuer= Case when @Issuer is NULL ThenTb_product.issuerELSE @Issuer END , -Period= Case when @Period=0 ThenTb_product.periodELSE @Period END , $Movement= Case wh

Tags: style blog http color ioAs shown, you need to update the path value of the table in the path field, such as id=14: -1,id=17 's Path value: -1.14,id=20 's Path value: -1.14.18.19Step 1, create a functionCreate FUNCTION [dbo].[f_org]( @id int )RETURNS TABLE asRETURN ( withtesttable as(SelectUpperid fromCore_deptinfowhereId=@id Union All SelectCore_depti

The table structure is as follows: Org_info Org_id, org_parent_id, org_parent_path The org_parent_path field must be updated. The field value is org_parent_path + '.' of the parent node + org_id of the parent node. Ideas First find the root node and set its org_parent_path Recursively locate the child node and update the org_parent_path field value. Code As follows: Code Code highlig

Label:The rationality of database structure and index affects the performance of database to a great extent, but with the increase of database information load, the performance of database is also greatly affected. Maybe our database has high performance at first, but with the rapid growth of data storage--such as order data--the performance of the data is also greatly affected, one obvious result is that the query response will be very slow. What else can you do at this time, in addition to opt

SQL Server data table field custom Custom Data Format method, SQL Server This document describes how to customize the Custom Data Format of SQL Server data

One, table variables Table variables were introduced for the first time in SQL Server 2000. The specific definition of a table variable includes a column definition, a column name, a data type, and a constraint. Constraints that can be used in

For simpler tables, the amount of data is not a very much table, you can use a simple SQL statement to back up CREATE TABLE t_fa_cat_20121207 as SELECT * from T_fa_cat Create a new table and save the data INSERT INTO T_fa_cat select * from t_fa_cat_20121207 To import the original backed-up data into a

First, table variablesTable variables were first introduced in SQL Server 2000. The specific definitions of table variables include column definitions, column names, data types, and constraints. Constraints that can be used in table variables include primary KEY constraints,