Tag:MySQL common functions

  • Common functions based on MySQL

    Time:2021-9-14

    1、 Common function classification 1.1 single line function: Character function Character control function (concat, substr, length…) Case control function Mathematical function Date function Process control function 1.2 grouping function: Grouping function functions are biased towards statistics, such as AVG (), count (), max (), min (), sum () Single line function and grouping function: (1) […]