Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
517 views
in Technique[技术] by (71.8m points)

mysql like performance boost

is there anyway to speed up mysql like operator performance if wild card is involved? eg. like '%test%'

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

MySQL can use an index if your query looks like foo LIKE 'abc%' or foo LIKE 'abc%def%'. It can use the index for any portion or the string before the first wildcard. If you need to match a word anywhere within a string, you might want to consider using FULLTEXT indexes instead.

More detail on indexes: http://dev.mysql.com/doc/refman/5.1/en/mysql-indexes.html

Full text search: http://dev.mysql.com/doc/refman/5.0/en/fulltext-search.html


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...