基础语法
查询
全表查询
select * from student选择查询
select name,age from student别名
select name as 学生姓名,age as 学生年龄 from student常量和运算
select name,score,score*2 as double_score from student条件查询–where
select name,score from student…
api 9 安装ohos/pulltorefresh2.0.1报错误 ohpm install ohos/pulltorefresh2.0.1
ohpm INFO: fetching meta info of package ohos/pulltorefresh
ohpm WARN: fetch meta info of package ohos/pulltorefresh failed - GET https://registry.npmjs.org/ohos/pulltorefresh 404…