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How to use DB2 COUNT_BIG

01 May,2015 by Tom Collins

Question: How is the function COUNT_BIG() used and what is the difference with COUNT()?

Answer: Both COUNT(*) and COUNT_BIG(*)  return total number of rows in a table where the value of the column is NOT NULL.

The difference is COUNT(*) returns INT datatype and COUNT_BIG(* )  uses the bigint datatype

When to use COUNT_BIG? If you think the result count is greater than the  maximum value of integer

Read more on data types

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Author: Rambler(http://www.dba-db2.com)

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Posted by Tom Collins at 10:57 AM in Object Management | Permalink | Comments (0) | TrackBack (0)

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