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Getting space back after manually deleting records


Getting space back after manually deleting records

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chilidogie
chilidogie
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We have a database with lab tests that we are going to merge with a different database. The original has 8,000,000 records. The new one can only bring in 100,000 at a time. I am copying the database, then deleting down to 100,000 records. However, the space on disk remains the same. Do I need to pack the database somehow to regain the space ?

Thanx !
Jeff Moden
Jeff Moden
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chilidogie (10/16/2012)
We have a database with lab tests that we are going to merge with a different database. The original has 8,000,000 records. The new one can only bring in 100,000 at a time. I am copying the database, then deleting down to 100,000 records. However, the space on disk remains the same. Do I need to pack the database somehow to regain the space ?

Thanx !


Yes. Rebuild the clustered index to recover the table space and rebuild the non-clustered indexes to regain the index space.

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
Just because you can do something in PowerShell, doesnt mean you should. Wink

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chilidogie
chilidogie
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Thanx Greatly !!!!
John Mitchell-245523
John Mitchell-245523
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If you want to release space on disk then you need to shrink the database. See DBCC SHRINKDATABASE. Beware, though - if your database is likely to grow again then you're wasting resources by shrinking it, as well as causing internal and external fragmentation.

John
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