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The Explorer lets you write SQL to explore the data you have connected to Galaxy. Use it to validate what data is in a Source, inspect tables and fields, and quickly answer questions before you model anything in a Project. If you are new to Galaxy, start with the Quickstart first. Explorer is most useful once you have at least one Source connected.

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When to use Explorer

Query Explorer is designed for quick, interactive exploration. Common use cases include:
  • Confirming a Source is connected and data looks correct
  • Inspecting schemas, tables, and columns
  • Prototyping a query before using it elsewhere
  • Debugging issues like missing fields, unexpected nulls, or duplicate records

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Prerequisites

Before you can query data, you need:
  1. A Galaxy workspace
  2. At least one connected Source
If you have not connected a Source yet, go to Connect your data and add one first.

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Write your First Query

Start with something simple to confirm you have access. 
select *
from <schema>.<table>
limit 100;