test index html

PrefaceBefore writing to MySQL on the table additions and deletions (query the most important), it feels like MySQL is almost finished, did not want to continue to learn the mentality, the reason may be due to other people's influence, think for

From: Http://www.cnblogs.com/aspnethot/articles/1504082.html Official statement:  Clustered Index An index. The logical order of the key values in the index determines the physical order of the corresponding rows in the table.The clustered index

Start from Create By using the explicit CREATE INDEX command As an implied object when creating a constraint Implicit indexes created with constraintsAn implicit index is created when you add one of the following two constraints to

The difference between using index and using where using index in the MySQL execution plan extra is as follows:   Source: http://www.cnblogs.com/wy123/p/7366486.html(The Source retained is not the right of original works. My work is far from

Article attribution: http://feiyan.info/16.html, I want to write to myself, but found this June summed up very detailed. Moved right over here.With regard to the benefits of MySQL indexing, if the correct design and use of the indexed MySQL is a

Partition index note (4) -- when the partition index will expire and process the partition index note (3) -- global partition Index http://www.bkjia.com/database/201308/238740.html Local indexes in partitioned tables are automatically maintained

Article attribution: http://feiyan.info/16.html, I want to write to myself, but found this June summed up very detailed. Moved right over here.With regard to the benefits of MySQL indexing, if the correct design and use of the indexed MySQL is a

In an Oracle database, creating an index is relatively straightforward. However, it is more difficult to create indexes reasonably. The author believes that when creating an index to do three appropriate, that is, on the appropriate table, the

工欲善其事 its prerequisite" If you meet God on the road, God will be cut," said half. "MySQL Index classification (using the B-tree structure by default)In a database table, indexing a field can greatly improve query speed. By leveraging these indexes,

Understanding MySQL-index and optimization [Reprinted] bitsCN.com Reprinted from: http://www.cnblogs.com/hustcat/archive/2009/10/28/1591648.html Preface: indexes have a crucial impact on the query speed. understanding indexes is also the starting