Re: Query Help...
On 10/20/2015 1:54 PM, Don Wieland wrote:
Trying to get a query working:
CONCAT(o.first_name, " ", o.last_name) AS orphan,
GROUP_CONCAT(DISTINCT hti.rec_code ORDER BY hti.rec_code ASC SEPARATOR ", ") AS alloc
FROM hiv_transactions ht
LEFT JOIN tk_orphans o ON ht.orphan_id = o.orphan_id
LEFT JOIN hiv_trans_items hti ON ht.transaction_id = hti.hiv_transaction_id
WHERE ht.donor_id = 730 AND ht.tr_date BETWEEN "2014-01-01 00:00:00" AND "2014-12-31 23:59:59"
ORDER BY ht.tr_date DESC, ht.rec_code ASC;
I am only showing one row of the “hiv_transactions” table when there are multiple rows.
On the GROUP_CONCAT I am trying to get a comma delineated list of the child rec_code with no duplicates
Appreciate any help. Hopefully a small mod ;-)
Which release of MySQL are you using?
How many rows do you get if you remove the GROUP_CONCAT operator? We
don't need to see the results. (sometimes it is a good idea to look at
the raw, unprocessed results)
Is it possible that you are attempting to concat more values than
allowed by --group-concat-max-len ?
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