SQL应该避免查询方式
摘要：
1、SQL在反义运算符中避免使用！"!=": 不等于"!>":不大于"!"、""、">="、"=20SELECT * FROM Student WHERE NOT(Age18 AND Age Age<60SELECT * FROM Student WHERE Age BETWEEN 18 AND 6... 阅读全文
posted @ 2012-05-26 19:27 朝曦 阅读(1179) 评论(0) 推荐(0) 编辑
