Documentation

Query PostgreSQL

To query PostgreSQL with Flux:

  1. Import the sql package.

  2. Use sql.from() and provide the following parameters:

    • driverName: postgres
    • dataSourceName: See data source name
    • query: PSQL query to execute
import "sql"

sql.from(
    driverName: "postgres",
    dataSourceName: "postgresql://username:password@localhost:5432",
    query: "SELECT * FROM example_table",
)
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PostgreSQL data source name

The postgres driver uses the following DSN syntax (also known as a connection string):

postgres://username:password@localhost:5432/dbname?param=value
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PostgreSQL to Flux data type conversion

sql.from() converts PostgreSQL data types to Flux data types.

PostgreSQL data typeFlux data type
INT, BIGINT, SMALLINT, TINYINT, INT2, INT4, INT8, SERIAL2, SERIAL4, SERIAL8int
FLOAT4, FLOAT8float
DATE, TIME, TIMESTAMPtime
BOOLbool
TEXTstring

All other PostgreSQL data types are converted to strings.


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The future of Flux

Flux is going into maintenance mode. You can continue using it as you currently are without any changes to your code.

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New in InfluxDB 3.2

Key enhancements in InfluxDB 3.2 and the InfluxDB 3 Explorer UI is now generally available.

See the Blog Post

InfluxDB 3.2 is now available for both Core and Enterprise, bringing the general availability of InfluxDB 3 Explorer, a new UI that simplifies how you query, explore, and visualize data. On top of that, InfluxDB 3.2 includes a wide range of performance improvements, feature updates, and bug fixes including automated data retention and more.

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