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Message Posted: Thu, 18 Mar 2010 @ 19:19:49 GMT


     
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Subj:   Re: Partition Detail
 
From:   Joseph D silva

Rehman Ansari wrote:

  Which Dictionary Table should enquire to get Partition Detail of a Table including Partition Size.  


You can get partitioning info here ...

     SELECT DATABASENAME, TABLENAME, CONSTRAINTTEXT
     FROM DBC.IndexConstraints
     WHERE ConstraintType = 'Q'

By partition size if you mean the number of records in a given partition,

you will have to run a query against the table itself ...

     SELECT PARTITION, COUNT(*)
     FROM tablename
     GROUP BY 1
     ;

It's not really a full table scan or anything so will be quick.

You can also get that ~ number from stats if your stats are 100% up to date.

IF you want to translate that into physical disk spaces, an approximate method would be to join with dbc.tablesize and do some factoring in there ..


Joseph D'silva



     
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