`Testb` varchar(255) character set utf8 collate utf8_bin NOT NULL,
`Testa` varchar(255) character set utf8 collate utf8_bin NOT NULL,
加这个关键字可以分别全角半角.
`Testb` varchar(255) character set utf8 collate utf8_bin NOT NULL,
`Testa` varchar(255) character set utf8 collate utf8_bin NOT NULL,
加这个关键字可以分别全角半角.