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what is sum(bytes/1024/1024)?

522510Jun 6 2007 — edited Jun 6 2007

hi,
i hv run following two query

select tablespace_name,sum(bytes/1024/1024) from dba_free_space

select tablespace_name,bytes/1024/1024 from dba_free_space
i hv question what is difference between these query

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Locked on Jul 4 2007

Added on Jun 6 2007

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