CREATE TABLE `test` ( `col1` VARCHAR( 10 ) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL , `col2` VARCHAR( 10 ) CHARACTER SET utf8 COLLATE utf8_general_ci NULL) ENGINE = MYISAM ;错误(不可以插入null值):INSERT INTO `test` VALUES (null,1);正确(插入''没问题):INSERT INTO `test` VALUES ('',1);INSER Read More
posted @ 2013-09-19 02:39 findumars Views(2101) Comments(0) Diggs(0)