how to compare two table data in sql server

Open SQL Server can only run on Windows, without the slightest openness, and the stability of the operating system is important to the database. Windows9x Series products are focused on desktop applications, NT server only for small and medium enterprises. And the reliability, security, and scalability of Windows platforms are very limited. It is not as time-t

It is very important to develop database applications and choose a good database. This article compares SQL Server with Oracle, DB2 three kinds of database from some aspects, provides some reference for you to choose the database. Open SQL Server Can only run on Windows, without the slightest openness, the stability

Tags: SQL Server  In recent days, the company's technical maintenance staff frequently let me recover the database, because they are always missing the where condition, resulting in update, delete has unrecoverable consequences, plus those libraries are dozens of G. It takes about more than 10 minutes to recover. To this end, find some information and summary, give a few ways to quickly restore the

\MSSQL12. Mssqlserver\mssql\data\testmemorydbdirectory ')to filegroup fg_testmemorydb;The CONTAINS memory_optimized_data clause specifies the filegroup that is used to store the memory tuning table data. Specifies that's filegroup stores memory_optimized data in the file system. Only one memory_optimized_data filegrou

table as soon as possible and minimize the impact on other tables and users during the recovery process. SQL Server (especially after 2008) has many backup and recovery features: full, partial, file, differential, and transactional backups. The choice of the recovery model severely affects the backup strategy and the type of backup. Here are a few scenarios to

Method one, program import C #, ASP. NET to import data from Excel tables into the corresponding tables in the SQL Server database.Here we import the data from the Sheet1 table in E:\test.xls into the My_test table in the test da

by the space is not released (currently can be released through other commands), and the use of truncatetable will not leave any page. The 7,truncate will reset the index of the table, so the table with the truncate operation will have a faster index than the table after the delete operation. Note: Although truncatetable can take advantage of the speed at wh

server| Scripts | Data uses SQL Server 2000 's own build SQL Scripts tool to generate SQL scripts to create tables, views, stored procedures, and so on. So can the data in the

Sometimes we want to import all the data from one table of a database to another database or to a database on another computer, and for SQL Server there is a wayHere I take SQL Server R2, the database is the Northwind database, fo

Built a table in the database , but because of the SQL Server table function is not familiar with, do not know what to set the primary key to what is good, first set a text type, but later friends told me that the text type easy to make the data file becomes very large, but

constraint references Main Table name (field name) go alter Table Commodity Information sheet add constraint fk_ Commodity Type table _ Commodity Information Table _ Product type number foreign key (item type number) -- View constraints --exec sp_help constraint name --Show name (name), owner, type (

Label:Keywords: SQL Server, table data, build INSERT statementFeedback please contact: [Email protected]Brief introductionDatabase data generates an INSERT (MSSQL version), which generates an INSERT or update SQL script for the

String 21st Binary data Binary Byte[] 22 varbinary Byte[] 23 Image Byte[] 24 Other uniqueidentifier Guid 25 Variant Object PS. Originally intended to reprint trackback:http://tb.blog.csdn.net/trackback.aspx?postid=95675 (SQL

Copy the contents of a to a new tableDescriptionWith data table A, you want to export his content to another table B, at which point B is not created and you want to create table B at the same time as the export.SELECT *into B [in Externaldatabase] from ASecond, copy the contents of a to the existing

Tags: check int enable LTE delete nbsp Add ons tableTo add a constraint to an existing data table, but not to use the constraint to existing data, use the WITH NOCHECK clause when executing the ALTER TABLE statement, so that the new constraint will not constrain the existing data