Knex.js的官方文档中是这样示例的:
knex('users').orderBy([
{ column: 'email' },
{ column: 'age', order: 'desc' }
])
//等同于:
select * from `users` order by `email` asc, `age` desc
Knex.js的官方文档
https://knexjs.org/
我是这样应用的:
const fundItem = await mysql('fund_items')
.select('sum_share','sum_amount')
.where('fund_id',fund_id)
.orderBy([
{ column: 'date' },
{ column: 'id', order: 'desc' }
]).first()
//等同于:
select `sum_share`, `sum_amount` from `fund_items` where `fund_id` = 1 order by `[object Object]`, `[object Object]` asc limit 1
结果报错,因为orderBy里面的内容被翻译成了[object Object], [object Object]
:
Error: ER_BAD_FIELD_ERROR: Unknown column '[object Object]' in 'order clause'
这个问题是knex版本的问题,当前版本还不支持多项查询。所有我们通过连接orderBy来查询,效果都是一样的,代码如下:
const fundItem = await mysql('fund_items')
.select('sum_share','sum_amount')
.where('fund_id',fund_id)
.orderBy('date','asc').orderBy('id','desc').first()
//等同于
select `sum_share`, `sum_amount` from `fund_items` where `fund_id` = ? order by `date` asc, `id` desc limit