---
title: Query CockroachDB
description: Use sql.from() with the postgres driver to query CockroachDB.
url: https://docs.influxdata.com/flux/v0/query-data/sql/cockroachdb/
estimated_tokens: 616
product: Flux
version: v0
publisher: InfluxData
canonical: https://docs.influxdata.com/flux/v0/query-data/sql/cockroachdb/
date: '2023-09-12T23:33:31-06:00'
lastmod: '2023-09-12T23:33:31-06:00'
---

To query [CockroachDB](https://www.cockroachlabs.com/) with Flux:

1. Import the [`sql` package](/flux/v0/stdlib/sql/).

2. Use [`sql.from()`](/flux/v0/stdlib/sql/from/) and provide the following parameters:

   * **driverName**: postgres
   * **dataSourceName**: *See [data source name](#cockroachdb-data-source-name)*
   * **query**: PSQL query to execute

```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",
)
```

## 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](https://www.cockroachlabs.com/docs/stable/build-a-go-app-with-cockroachdb-pq)to interact with CockroachDB.

## 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](/flux/v0/data-types/basic/int/)   |
|                              FLOAT4, FLOAT8                               | [float](/flux/v0/data-types/basic/float/) |
|                           DATE, TIME, TIMESTAMP                           |  [time](/flux/v0/data-types/basic/time/)  |
|                                   BOOL                                    |  [bool](/flux/v0/data-types/basic/bool/)  |
|                                   TEXT                                    |[string](/flux/v0/data-types/basic/string/)|

All other CockroachDB data types are converted to strings.

#### Related

* [sql.from() function](/flux/v0/stdlib/sql/from/)
| CockroachDB data type | Flux data type |
| --- | --- |
| 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 |