经过尝试,两者之间有以下的区别:
(1)4.0中vachar字段中，空格不被计数
(2)4.0中，表名两端的空格会自动过滤
(3)4.0中，vachar字段中，/不被计数
(4)5.0中自增长类型必须单独设置成key或索引
(5)5.0中,联合索引的总容量不能超过1000bytes,通过限定个别索引的有效长度进行改善
(6)5.0中,Condition是关键字，不能作为字段名
(7)5.0中create Table 语句中 最后一个字段后跟逗号，会报错
以前的脚本在5.0上跑会出现的问题:
(1)ERROR 1406 (22001): Data too long for column 'xxx' at row 1
(2)ERROR 1103 (42000): Incorrect table name 'xxx '
(3)ERROR 1075 (42000): Incorrect table definition; there can be only one auto colum
n and it must be defined as a key
(4)ERROR 1071 (42000): Specified key was too long; max key length is 1000 bytes
(5)ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near ') TYP
E=MyISAM' at line 9