The WMI Query Language (WQL) is a subset of the American National Standards Institute Structured Query Language (ANSI SQL)—with minor semantic changes.
Windows Management Instrumentation Query Language (WQL) is Microsoft's implementation of the CIM Query Language (CQL), a query language for the Common Information Model (CIM) standard from the Distributed Management Task Force (DMTF). It is a subset of the standard ANSI SQL with minor semantic changes. A basic WQL query remains fairly understandable for people with basic SQL knowledge.
WQL is dedicated to WMI and is designed to perform queries against the CIM repository to retrieve information or get event notifications
