摘要: 1、查询数值型数据: SELECT * FROM tb_name WHERE sum > 100; 查询谓词:>,=,<,<>,!=,!>,!<,=>,=< 2、查询字符串 SELECT * FROM tb_stu WHERE sname = ‘Cricode.com’ SELECT * FROM 阅读全文
posted @ 2018-12-10 16:20 RoyFans 阅读(606) 评论(0) 推荐(0) 编辑