SQL笔记：对比EXCEL轻松学习SQL数据分析第五章-【数据获取】

#获取全表
select * from dianjian0629
#获取指定列
select fen_bu_chang_suo_,shi_fang_ren_,suo_shu_fen_bu_ from dianjian0629
#获取指定行
select * from dianjian0629 limit 5 #获取前5行
select * from dianjian0629 limit 2,6 #获取从2行开始后的6行
#获取满足条件的行
select * from dianjian0629 where suo_shu_fen_bu_ = '传感器管理分部' and shi_fang_ren_ = '吴晓丽'
select * from dianjian0629 where suo_shu_fen_bu_ = '传感器管理分部' or shi_fang_ren_ = '王帅超'
#添加列
select fen_bu_chang_suo_,shi_fang_ren_,suo_shu_fen_bu_,jin_ji_cheng_dong_shuo_ming_, "急件" as label from dianjian0629 where jin_ji_cheng_dong_shuo_ming_ = '紧急'
#排序 asc升序，desc降序
select * from dianjian0629 order by fen_bu_chang_suo_ asc,cheng_nuo__jiao_qi_ DESC