docs-v2/content/flux/v0/write-data/sql/postgresql.md

title	list_title	description	menu	weight	related	list_code_example
Write to PostgreSQL	PostgreSQL	Use [`sql.to()`](/flux/v0/stdlib/sql/to/) with the `postgres` driver to write data to PostgreSQL.	flux_v0 name parent identifier PostgreSQL write-to-sql write-postgres	101	/flux/v0/stdlib/sql/to/	```js import "sql" data |> sql.to( driverName: "postgres", dataSourceName: "postgresql://username:password@localhost:5432", table: "example_table" ) ```

To write data to PostgreSQL with Flux:

1. Import the sql package.

2. Pipe-forward data into sql.to() and provide the following parameters:

   • driverName: postgres
   • dataSourceName: See data source name
   • table: Table to write to
   • batchSize: Number of parameters or columns that can be queued within each call to Exec (default is 10000)

import "sql"
  
data
    |> sql.to(
        driverName: "postgres",
        dataSourceName: "postgresql://username:password@localhost:5432",
        table: "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

Flux to PostgreSQL data type conversion

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

Flux data type	PostgreSQL data type
float	FLOAT
int	BIGINT
uint	BIGINT
string	TEXT
bool	BOOL
time	TIMESTAMP