SQL Server

Whenever this happens, I always say in my heart: "Cup, Ah, this life is not finished." Because the installation of SQL Server is still more complex, you have to install. Net, Windows Installer, and in the process of the formal installation of the

Copy Code code as follows: --Simple Case function Case Sex When ' 1 ' THEN ' male ' When ' 2 ' THEN ' woman ' Else ' other ' end --case search function case when sex = ' 1 ' THEN ' man ' When sex = ' 2 ' THEN ' female ' Else

StatementSELECT * from database a.dbo. Table A, database b.dbo. Table b b WHERE A.field=b.field The "DBO" can omit such SELECT * from Database A.. Table A A, database B.. Table b b WHERE A.field=b.field SQL Server database: --This is a map of a

First of all, the implementation of the way: 1, let's assume that there is a primary key field ID (integer) in the table that has already been indexed, and we'll follow this field to get the data paginated. 2, the size of the page we put in the

When you find that the database query performance is very slow, everyone will think of Gazzo to optimize the database query performance, but the face of a complex SQL statement, to find an optimized index combination of the human brain, is really

Yesterday, my colleague gave you a database of problems and asked me to fix it. Because the customer needs this database, this database has only one MDF file and one LDF file, When I append the database error, the database is SQL2005 Attached is a

What should we do if we need to modify the SQL Server table structure? Here's how you can modify the SQL Server table structure to help you learn about the structure of your SQL Server table.add a varchar column to the SQL Server table：ALTER TABLE

1.1.1 Summary If you want to optimize the database, we can mainly through the following five ways to optimize the database system. 1. Computer Hardware tuning 2. Application Tuning 3. Database Index Optimization 4. SQL statement Optimization 5.

A clustered index in which the data is actually stored sequentially, and the data page is on the index page. It's like a reference manual that all the topics are organized in order. Once you have found the data you want to search, you complete this

This method is cumbersome to operate, and is generally not very easy to understand the database of people. In the germination of a small program to write the idea, after two days of tossing this small software finally and you meet, I hope that

New features for 1.2 SQL Server 2000 SQL Server 2000 fully expands the performance reliability and ease of use of SQL Server 7.0 to make it an outstanding database platform for large online transaction processing data warehouses and E-commerce The

The main purpose of setting up a firewall for a Web page is to provide different services to different visitors based on the content of the Web page, which we can easily do with Java script or VB script. But the source of the Web page in the client

I. BACKGROUND When you build SQL Server replication, if the network environment is within the LAN, through the host name can be achieved, but if it is across the network segment, across the computer room to build replication when you need to pay

The concept of checkpoint is not unfamiliar to most SQL Server development or DBA personnel. However, including myself, we all have more or less some misunderstandings about checkpoint, recently and Gao Wenjia classmate (thanks to the discussion of

The SQL Server form function is primarily used to handle the rowset defined by the over clause, primarily for parsing and processing Running totals Moving averages Gaps and Islands Let's look at a simple application-rank the order form

I. INTRODUCTION Although companies often collect and store large amounts of data, it is sometimes difficult to display data in detail, and it is difficult to provide insights into what will happen in business so that business decision-makers can

This is a question that is often asked. In particular, when using Oracle, the client would have a problem with SQL Server, which is that SQL Server behaves differently from Oracle on top of NULL values. In Oracle, a null value is considered to be

When the system is finished, performance problems are often an important issue in warranty and later maintenance. These days, the customer has to reflect that there is a very slow query. This query uses a primary key query, because the primary key

A day at work see a database on SQL Server 2012 D on disk 80%, a moment feeling bad. So look at the hard disk, a small 200M database file, dragging a 6G log file. But I feel depressed.So it's easy to open a database--------shrink-to-file650)

To view locked tablesSelect request_session_id spid,object_name (resource_associated_entity_id) tableName from sys.dm _tran_locks where resource_type= ' OBJECT '　　Unblock a locked table DECLARE @spid int set @spid = 74-Lock