By mswatcher
via brentozar.com
Submitted: Jan 25 2013 / 13:25
Databases exist to store data and answer questions about that data. The way we ask questions has to change based on the database itself – SQL changes between different RDBMS vendors. Things get even stranger when you venture outside the RDBMS world and start storing your data in Hive. Even though Hive Query Language (HiveQL) looks like SQL, there are some subtle but important differences to querying that first timers will want to keep in mind.
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