Query Data

GreptimeDB exposes several query interfaces over the same tables. Which one to use depends on the signal and on the tool doing the asking.

Query languages

• SQL — queries across metrics, logs, and traces, including range queries. Views and common table expressions factor out a query you write repeatedly.
• PromQL — metric queries through the Prometheus HTTP API, or TQL inside SQL.
• Jaeger API — trace queries from Jaeger UI or Grafana.
• Log Query — a dedicated HTTP endpoint for log search. Experimental.

Clients and drivers

GreptimeDB speaks the MySQL and PostgreSQL wire protocols, so existing SQL drivers connect to it without a GreptimeDB-specific client. SQL Tools lists the drivers and their connection settings.

Query files that were never ingested

GreptimeDB can run SQL over external data files in place. See Query External Data.