Null values in columns of type boolean are returned as false

[timo-schluessler]

Specifications

• Client Version: 1.29.0
• InfluxDB Version: 2.0.7
• Platform: Linux

Code sample to reproduce problem

import { InfluxDB } from '@influxdata/influxdb-client'

const token = '### enter token ###';
const queryApi = new InfluxDB({url: 'http://localhost:8086', token}).getQueryApi('Org');

queryApi.queryRows(
        `import "experimental/array"

        array.from(rows: [
                {_measurement: "m0", _field: "f0", _value: true, _time: 2020-01-01T00:00:00Z,},
                {_measurement: "m0", _field: "f1", _value: true, _time: 2020-01-01T00:00:00Z,},
                {_measurement: "m0", _field: "f0", _value: true,  _time: 2020-01-01T01:00:00Z,},
                // no entry for f1 at 01:00:00 -> _value will be set to null by pivot()
        ])
                |> pivot(rowKey: ["_time"], columnKey: ["_field"], valueColumn: "_value")`,
        {
                next: (row, tableMeta) => {
                        console.log(`At ${tableMeta.get(row, '_time')} f0 is ${tableMeta.get(row, 'f0')} and f1 is ${tableMeta.get(row, 'f1')}`);
                },
                error: e => console.log(e),
                complete: () => {},
        }
);

Expected behavior

At 2020-01-01T00:00:00Z f0 is true and f1 is true
At 2020-01-01T01:00:00Z f0 is true and f1 is null

Actual behavior

At 2020-01-01T00:00:00Z f0 is true and f1 is true
At 2020-01-01T01:00:00Z f0 is true and f1 is false

Additional info

I think this line should be changed to

   boolean: (x: string): any => (x === '' ? null : x === 'true'),

[sranka]

Thank you @timo-schluessler for posting an issue and suggesting a fix. I am on it.

[sranka]

This is going to be fixed quickly. If you can't wait, you can change the default serializer the way you propose. default typeSerializers are exported.

[timo-schluessler]

Ok, thanks for your quick reaction.

[sranka]

The fix is available in the nightly build (since version: 1.30.0-nightly.2813), it will become part of the release.