Clickhouse.query

You're seeing just the function query, go back to Clickhouse module for more information.
Link to this function

query(client, statement, params \\ [], opts \\ [])

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Specs

query(client(), statement(), params(), keyword()) ::
  {:ok, Clickhouse.Result.t()} | {:error, Clickhouse.Error.t()}

Prepares and executes a query using a Clickhouse client.