OpenTelemetry is a unified observability framework that provides a common interface for instrumenting code, collecting metrics, logs, and traces in a consistent manner. It differs from previous observability tools by focusing on the creation and transmission of signals, rather than storage or query capabilities. This allows developers to use OpenTelemetry as a single API and SDK per language, offering common concepts across metrics, logs, and traces. The framework enables stream processing, enrichment, aggregation, and routing of signals, making it easier to deploy and manage telemetry data. However, querying signals remains a challenge, with different query languages for each signal type (e.g., PromQL for metrics, LogQL for logs). A unified language that can handle multiple signal types is needed, which could be based on SQL, a well-established standard for modeling relationships and analyzing data. Adopting SQL as the query language for OpenTelemetry could provide a consistent approach to querying telemetry data across different signal types, enabling seamless correlation and analysis of metrics, logs, and traces.