摘要:
引自:http://www.sensail.com/archives/85他们的存储方式和数据的检索方式都不一样。数据的检索效率是:char>varchar>text空间占用方面,要具体情况具体分析了。CHAR(M)M个字节,0 desc test;+-------+------------+------+-----+---------+-------+| Field |Type| Null | Key | Default | Extra |+-------+------------+------+-----+---------+-------+|a| mediumtext | Y 阅读全文