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Object Query Language (OQL) is a query language standard for object-oriented databases modeled after SQL and developed by the Object Data Management Group (ODMG). Because of its overall complexity the complete OQL standard has not yet been fully implemented in any software. The OQL standard influenced the design of later query languages such as JDOQL and EJB QL, though none are considered to be any version of OQL.
SELECTmanufacturer,AVG(SELECTpart.pc.ramFROMpartitionpart) FROMPCspc GROUPBYmanufacturer:pc.manufacturer;Note the use of the keyword partition, as opposed to aggregation in traditional SQL.
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