Discuss / SQL / 聚合查询
Back

聚合查询

Topic source

alienation

#1 Created at ... [Delete] [Delete and Lock User]

group by 方法加入多个参数，会生成层级索引

group by 后面参数的顺序无影响，在select后面的投影查询会影响索引的层级顺序

  • 1

Reply