SELECT a, COUNT(a) AS b FROM tbl WHERE b > 1 GROUP BY a
should be 
SELECT a, COUNT(a) AS b FROM tbl  GROUP BY a having b > 1

where clauses cannot act on aggregate functions (count, sum, avg, etc).
to filter on aggregate functions you must use the having clause

HTH,
Peter

On 27 Mar 2003 at 17:17, Mike Starke wrote:

> How do you structure a sql statement such as
> 
> SELECT a, COUNT(a) AS b FROM tbl WHERE b > 1 GROUP BY a
> 
> I am looking for only the records which report
> a count greater than one. MySQL complains that column 'b' does
> not exist.
> 
> -Mike
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