@Rob: Ya, this field is already a primary key in the same table and there a
separate index created on this single column.
On Thursday, 16 April 2015 9:58 AM, "Virgo Pärna [email protected]
[firebird-support]" <[email protected]> wrote:
On Wed, 15 Apr 2015 21:54:32 +0000 (UTC), Vishal Tiwari
[email protected] [firebird-support] <[email protected]>
wrote:
>
>
> SELECT
> Sum(CRM_DOCUMENT_ITEMS.QUANTITY) AS Delivered,
> CRM_DOCUMENT_ITEMS.FK_JOB_ITEM
> FROM
> CRM_DOCUMENT_ITEMS
> INNER JOIN CRM_DOCUMENT_HEADER ON CRM_DOCUMENT_ITEMS.FK_DOCUMENT_HEADER =
> CRM_DOCUMENT_HEADER.PK_DOCUMENT_HEADER
> WHERE
> CRM_DOCUMENT_HEADER.DOCUMENT_TYPE = 1 and CRM_DOCUMENT_ITEMS.FK_JOB_ITEM in
> (select PK_JOB_ITEMS from CRM_JOB_ITEMS where FK_JOB =
> '{8BDDED49-8509-48C1-A169-B7E68A74C230}')
> GROUP BY
> CRM_DOCUMENT_ITEMS.FK_JOB_ITEM
I would start by rewriting IN as a JOIN - something like:
SELECT Sum(CRM_DOCUMENT_ITEMS.QUANTITY) AS Delivered,
CRM_DOCUMENT_ITEMS.FK_JOB_ITEM
FROM CRM_DOCUMENT_ITEMS JOIN CRM_DOCUMENT_HEADER ON
CRM_DOCUMENT_ITEMS.FK_DOCUMENT_HEADER = CRM_DOCUMENT_HEADER.PK_DOCUMENT_HEADER
JOIN CRM_JOB_ITEMS ON CRM_DOCUMENT_ITEMS.FK_JOB_ITEM =
CRM_JOB_ITEMS.PK_JOB_ITEMS
WHERE
CRM_DOCUMENT_HEADER.DOCUMENT_TYPE = 1 and
CRM_JOB_ITEMS.FK_JOB = '{8BDDED49-8509-48C1-A169-B7E68A74C230}'
--
Virgo Pärna
[email protected]
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