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 = '小刘' SELECT * FROM tb_stu WH 阅读全文
posted @ 2018-12-29 00:45 落花之语 阅读(1302) 评论(0) 推荐(0) 编辑