Aggregate.end

1. Interface Description

Function: Marks the completion of the aggregation operation definition and initiates the actual aggregation operation.

Declaration: end()

2. Input Parameters

None

3. Response

Parameter	Type	Required	Description
data	Array.<any>	Required	list of aggregation results

4. Sample Code

const tcb = require('@cloudbase/node-sdk')
const app = tcb.init({
  env: 'xxx'
})

const db = app.database()
const $ = db.command.aggregate

exports.main = async (event, context) => {
  const res = await db
    .collection('books')
    .aggregate()
    .group({
      // Group by the category field
      _id: '$category',
      // Make each group of output records have an avgSales field, whose value is the average of the sales field across all records in the group
      avgSales: $.avg('$sales')
    })
    .end()
  console.log(res.data)
}