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gcp_bigquery_select

EXPERIMENTAL

This component is experimental and therefore subject to change or removal outside of major version releases.

Executes a SELECT query against BigQuery and creates a message for each row received.

Introduced in version 3.63.0.

# Config fields, showing default values
input:
label: ""
gcp_bigquery_select:
project: ""
table: ""
columns: []
where: ""
job_labels: {}
args_mapping: ""
prefix: ""
suffix: ""

Once the rows from the query are exhausted, this input shuts down, allowing the pipeline to gracefully terminate (or the next input in a sequence to execute).

Examples

Here we query the public corpus of Shakespeare's works to generate a stream of the top 10 words that are 3 or more characters long:

input:
gcp_bigquery_select:
project: sample-project
table: bigquery-public-data.samples.shakespeare
columns:
- word
- sum(word_count) as total_count
where: length(word) >= ?
suffix: |
GROUP BY word
ORDER BY total_count DESC
LIMIT 10
args_mapping: |
root = [ 3 ]

Fields

project

GCP project where the query job will execute.

Type: string

table

Fully-qualified BigQuery table name to query.

Type: string

# Examples

table: bigquery-public-data.samples.shakespeare

columns

A list of columns to query.

Type: array

where

An optional where clause to add. Placeholder arguments are populated with the args_mapping field. Placeholders should always be question marks (?).

Type: string

# Examples

where: type = ? and created_at > ?

where: user_id = ?

job_labels

A list of labels to add to the query job.

Type: object
Default: {}

args_mapping

An optional Bloblang mapping which should evaluate to an array of values matching in size to the number of placeholder arguments in the field where.

Type: string

# Examples

args_mapping: root = [ "article", now().ts_format("2006-01-02") ]

prefix

An optional prefix to prepend to the select query (before SELECT).

Type: string

suffix

An optional suffix to append to the select query.

Type: string