docs-v2/content/flux/v0/query-data/sql/cockroachdb.md

title	list_title	description	menu	weight	related	list_code_example
Query CockroachDB	CockroachDB	Use [`sql.from()`](/flux/v0/stdlib/sql/from/) with the `postgres` driver to query CockroachDB.	flux_v0 name parent CockroachDB SQL databases	101	/flux/v0/stdlib/sql/from/	```js import "sql" sql.from( driverName: "postgres", dataSourceName: "postgresql://username:password@localhost:26257/cluster_name.defaultdb?sslmode=verify-full&sslrootcert=certs_dir/cc-ca.crt", query: "SELECT * FROM example_table", ) ```

To query CockroachDB 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:26257/cluster_name.defaultdb?sslmode=verify-full&sslrootcert=certs_dir/cc-ca.crt",
    query: "SELECT * FROM example_table",
)

---

CockroachDB data source name

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

postgres://username:password@localhost:26257/cluster_name.defaultdb?sslmode=verify-full&sslrootcert=certs_dir/cc-ca.crt

{{% note %}} The postgres driver use the Go pq implementation to interact with CockroachDB. {{% /note %}}

CockroachDB to Flux data type conversion

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

CockroachDB data type	Flux data type
INT, BIGINT, SMALLINT, TINYINT, INT2, INT4, INT8, SERIAL2, SERIAL4, SERIAL8	int
FLOAT4, FLOAT8	float
DATE, TIME, TIMESTAMP	time
BOOL	bool
TEXT	string

{{% caption %}} All other CockroachDB data types are converted to strings. {{% /caption %}}