我有这个很老的SLOW查询,我试图优化,但我不确定我可以做任何事情,但在涉及WHERE,JOIN和ORDER BY的列中添加更多索引。优化查询与添加索引
查询:
SELECT TOP 400 jobticket.jobnumber, jobticket.typeform, jobticket.filename, jobticket.req_number, jobticket.reqd_del_date, jobticket.point_of_contact, jobticket.status, jobticket.DapsDate, jobticket.elpod, job_info.IDOrderMaskedStatus, job_info.job_status, job_info.SalesID, job_info.location, job_info.TOMetadataID
FROM jobticket WITH (NOLOCK)
INNER JOIN job_info WITH (NOLOCK) ON job_info.jobnumber = jobticket.jobnumber
WHERE
(
NOT(
(jobticket.status = 'Complete' OR jobticket.status = 'Completed')
and (job_info.job_status = 'Actualized' OR job_info.job_status = ''
OR job_info.job_status = 'Actualized Credit Billed'
OR job_info.job_status = 'DWAS Actualized' OR job_info.job_status = 'DWAS Actualized Credit Billed'
)
)
or
((SELECT COUNT(job_status) AS Expr1 FROM tblConsolidatedBilling AS tblConsolidatedBilling_1 WITH (NOLOCK)
WHERE (job_status <> 'Actualized'
AND job_status <> 'Actualized Credit Billed')
AND (master_jobnumber = jobticket.jobnumber)) > 0)
)
and (jobticket.status != 'Waiting Approval' or (jobticket.status = 'Waiting Approval' and jobticket.DPGType is null))
and jobticket.typeform <> 'todpg'
and ((job_info.isHidden <> 1 or job_info.isHidden is null) and job_info.isInConcurrentRelease is null)
and job_info.deleted != '1'
and jobticket.status != 'New Job'
and jobticket.status != 'PRFYCLSFD'
ORDER BY
job_info.expediencyLevel DESC,
jobticket.jobnumber DESC
说实话,我不知道如何处理这个查询做。
我应该在涉及WHERE JOIN和ORDER BY的所有列上添加单个非聚簇索引吗?
有这些表多项指标,但我不知道他们是否有帮助在此查询:
你是否以某种方式自动创建基于数据库调优顾问结果的索引?或者你怎么能有这么多重复的索引... –
我不知道。我试图清理混乱:) – Angelina