MySQL - Select from two tables where columns are not empty or null

后端 未结 0 1853
醉酒成梦
醉酒成梦 2020-12-16 16:16

I have two tables The first table contains student data and the subjects they are taking eg

id,studentname,subj_maths,subj_english,subj_science

eg 1,John Smith

相关标签:
回答
  • 消灭零回复
提交回复
热议问题