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47

answers:

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In SQL we could add group by clause -- then do sum, count, or avg of a particular (numeric) column. Is there a way to "merge" / "concatenate" particular column -- for each group?

I need this done in one SQL statement

A: 

i found the answer in below link http://www.oracle-base.com/articles/misc/StringAggregationTechniques.php

iwan