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",
)

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

PostgreSQL to Flux data type conversion

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