THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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DESCRIBE [EXTENDED|FORMATTED] [db_name.]table_name[DOT col_name ( [DOT field_name] | [DOT '$elem$'] | [DOT '$key$'] | [DOT '$value$'] )* ]
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DESCRIBE [EXTENDED|FORMATTED] [db_name.]table_name partition_spec
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