---
title: Execute queries
description: Use tools and libraries to query data stored in InfluxDB Cloud Serverless.
url: https://docs.influxdata.com/influxdb3/cloud-serverless/query-data/execute-queries/
estimated_tokens: 879
product: InfluxDB Cloud Serverless
version: cloud-serverless
---

# Execute queries

Use tools and libraries to query data stored in an InfluxDB Cloud Serverless bucket.

InfluxDB 3 supports the following APIs and languages for querying data:

-   Flight+RPC with SQL or InfluxQL. Use InfluxDB client libraries and Flight+RPC clients to query with SQL or InfluxQL and retrieve data in [Arrow in-memory format](https://arrow.apache.org/docs/format/Columnar.html).
-   Flight SQL with SQL or InfluxQL. Use Flight SQL clients to query with SQL or InfluxQL and retrieve data in [Arrow in-memory format](https://arrow.apache.org/docs/format/Columnar.html).
-   HTTP `/query` endpoint for InfluxDB v1 compatibility when you bring workloads and code from v1.x to v3. Use the `/query` endpoint with InfluxQL and tools such as Telegraf, HTTP clients, and InfluxDB v1 client libraries to query and retrieve data in JSON or CSV format.

#### /api/v2/query endpoint can’t query InfluxDB 3

InfluxDB Cloud Serverless doesn’t support the InfluxDB v2 HTTP `/api/v2/query` endpoint and isn’t optimized for the Flux query language. Use SQL or InfluxQL to query data stored in InfluxDB 3.

Learn how to connect to InfluxDB and query your data using the following tools:

## [Use client libraries](/influxdb3/cloud-serverless/query-data/execute-queries/client-libraries/)

Use the InfluxDB 3 client libraries with SQL or InfluxQL to query data stored in InfluxDB. InfluxDB 3 client libraries are language-specific packages that integrate with your application. Execute queries and retrieve data and metadata over the Flight+gRPC protocol, and then process data using tools in the language of your choice.

## [Use the InfluxDB Data Explorer to query data](/influxdb3/cloud-serverless/query-data/execute-queries/data-explorer/)

Query your data in the InfluxDB user interface (UI) Data Explorer.

## [Use the v1 query API and InfluxQL](/influxdb3/cloud-serverless/query-data/execute-queries/v1-http/)

Use the InfluxDB v1 HTTP query API to query data in InfluxDB Cloud Serverless with InfluxQL.

```sh
curl https://cloud2.influxdata.com/query \
  --header "Authorization: Token API_TOKEN" \
  --data-urlencode "db=BUCKET_NAME" \
  --data-urlencode "q=SELECT * FROM home"
```

[Read more](/influxdb3/cloud-serverless/query-data/execute-queries/v1-http/)

## [Use visualization tools](/influxdb3/cloud-serverless/query-data/execute-queries/visualization-tools/)

Use visualization tools and SQL or InfluxQL to query data stored in InfluxDB.