sql statement checker

From http://download.microsoft.com/download/e/5/3/e53a74e2-9f13-4736-b263-df72af00a8f0/ReadmeSQLEXP2005Advanced.htm#_3462_setup_issues_238p 3.0 Installation Problems This section describes how to install SP1. SQL Server 2005 express edition

Database optimization methods and SQL statement Optimization PrinciplesAuthor: yashi Source: SCID[Abstract] database optimization methods and SQL statement optimization principles: optimize databases by indexing key fields, backing up databases, and

SQL statement optimization principles:◆ 1. Use indexes to traverse tables fasterThe index created by default is a non-clustered index, but sometimes it is not optimal. In a non-clustered index, data is physically stored on the data page randomly.

1) Scene catch the slow query statement show full processlist;2) configuration parameters:Slow_query_log_file = On slow query open switchlong_query_time = 2 record SQL statement greater than 2 secondsLog_queries_not_using_indexes = on does not use

Thoughts on optimizing databases: ====================== 1. Create an index for the key fields. 2. Using Stored Procedures makes SQL more flexible and efficient. 3. Back up the database and clear junk data. 4. SQL statement syntax optimization.

SQL statement optimization principles: 1. Use indexes to traverse tables faster The index created by default is a non-clustered index, but sometimes it is not optimal. In a non-clustered index, data is physically stored on the data page randomly.

SQL 1. Object and database mapping, the key is the mapping of object relationships, but not ideal, too much configuration, control complex, and there will be errors. In fact, the essence is that the object is not free. 2. Transaction processing.

Original: SQL Server 2012:SQL Server architecture--The life cycle of a query (part 2nd)Planning cache (Plan caches)If SQL Server has found a good way to execute a piece of code, it should be reused as a subsequent request because Generating

1. Use the index to traverse the table more quickly.The index established by default is a non-clustered index, but sometimes it is not optimal. Under a non-clustered index, the data is physically randomly stored on the data page. A reasonable index

Considerations for optimizing the database: 1. create an index in the key field. 2. using stored procedures makes SQL more flexible and efficient. 3. back up the database and clear junk data. 4. SQL statement syntax optimization. (You can use