HQL (Hive Query Language) is a SQL-like query language for Apache Hive, a data warehouse system built on top of Hadoop. It allows users to query and manage large datasets stored in distributed storage like HDFS (Hadoop Distributed File System) using a familiar SQL syntax. HQL queries are translated into MapReduce or other execution frameworks to process the data in parallel. It's commonly used for data summarization, query, and analysis of large datasets.
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