mysql-关于数据表的优化及转换问题？
mysql优化mssql
A表600M,有ntext列，记录15万条
B表6000M,有ntext列，记录15万条
其它列都几乎相同并且没有占多字节的列
这种情况是不是说明B表中多数ntext列都存储N倍于A表的内容？
两个表都需要如何优化吗？如何优化？
原数据库为mssql,如何把mssql转换成mysql(myisam)?
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