帮助所需的调整SQL [英] help required tune the sql
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问题描述
大家好,
请帮助我在sql server中调整以下sql.插入时花很长时间.
Hi all,
Please help me to tune the below sql in sql server .taking long time while inserting.
insert into AN_MAPPING(MAPPING_ID,MAPPING_NAME,SESSION_ID,FOLDER_NAME,TOOL_ID,PROJECT_ID)
(
select distinct mapping_id,
mapping_name,
session_id,
subject_area,
tool_id,
PROJECT_ID
from
(
select distinct rsm.mapping_id,
rls.mapping_name,
rls.session_id,
rls.subject_area,
1 tool_id,
A.PROJECT_ID
from
dbo.FD_INFA_REP_LOAD_SESSIONS rls,
dbo.FD_INFA_REP_SRC_MAPPING rsm,
(
SELECT distinct
OPB_MAPPING.PROJECT_ID,
OPB_SUBJECT.SUBJ_NAME SUBJECT_AREA,
OPB_SUBJECT.SUBJ_ID SUBJ_ID,
OPB_MAPPING.MAPPING_NAME MAPPING_NAME
FROM dbo.FD_INFA_OPB_MAPPING OPB_MAPPING
inner join dbo.FD_INFA_OPB_TDS OPB_TDS
on OPB_TDS.MAPPING_ID = OPB_MAPPING.MAPPING_ID
and OPB_TDS.VERSION_NUMBER=OPB_MAPPING.VERSION_NUMBER
inner join dbo.FD_INFA_OPB_WIDGET_INST OPB_WIDGET_INST on
OPB_WIDGET_INST.MAPPING_ID=OPB_MAPPING.MAPPING_ID
and OPB_MAPPING.VERSION_NUMBER = OPB_WIDGET_INST.VERSION_NUMBER
inner JOIN dbo.FD_INFA_OPB_TARG OPB_TARG on
OPB_TARG.TARGET_ID=OPB_WIDGET_INST.WIDGET_ID
inner JOIN dbo.FD_INFA_OPB_SUBJECT OPB_SUBJECT on
OPB_SUBJECT.SUBJ_ID=OPB_TARG.SUBJ_ID
AND OPB_WIDGET_INST.WIDGET_TYPE = 2
AND OPB_MAPPING.REF_WIDGET_ID = 0
AND OPB_MAPPING.IS_VISIBLE in(1,2)
AND OPB_TARG.IS_VISIBLE in( 1,2)
AND OPB_MAPPING.PROJECT_ID= -511779242
-- AND(datediff (ss,CNTL.FN_Last_UpdateTime,OPB_MAPPING.LAST_SAVED)>0
--OR datediff (ss,CNTL.FN_Last_UpdateTime,OPB_TARG.LAST_SAVED)>0)
) A
where
rls.mapping_name = rsm.mapping_name
and rls.SUBJECT_AREA = rsm.SUBJECT_AREA
and rls.IS_VALID=1
and A.mapping_name = rls.mapping_name
and rsm.PROJECT_ID = rls.PROJECT_ID
and rls.PROJECT_ID = -511779242)B
)
[发布为解决方案]
在估计的执行计划中,我发现尚未匹配的总成本占了64%.
[Posted as solution]
in estimated execution plan i found hast match aggregate cost is taking 64%.
推荐答案
DO n't使查询复杂化.选择一个特定的块值以CTE并在您的insert语句中加入.会更好.
例如.
DOn''t make complicate in your query. Select a particular block values to CTE and Join in your insert statement. It will be better.
For eg.
SELECT distinct
OPB_MAPPING.PROJECT_ID,
OPB_SUBJECT.SUBJ_NAME SUBJECT_AREA,
OPB_SUBJECT.SUBJ_ID SUBJ_ID,
OPB_MAPPING.MAPPING_NAME MAPPING_NAME
FROM dbo.FD_INFA_OPB_MAPPING OPB_MAPPING
inner join dbo.FD_INFA_OPB_TDS OPB_TDS
on OPB_TDS.MAPPING_ID = OPB_MAPPING.MAPPING_ID
and OPB_TDS.VERSION_NUMBER=OPB_MAPPING.VERSION_NUMBER
inner join dbo.FD_INFA_OPB_WIDGET_INST OPB_WIDGET_INST on
OPB_WIDGET_INST.MAPPING_ID=OPB_MAPPING.MAPPING_ID
and OPB_MAPPING.VERSION_NUMBER = OPB_WIDGET_INST.VERSION_NUMBER
inner JOIN dbo.FD_INFA_OPB_TARG OPB_TARG on
OPB_TARG.TARGET_ID=OPB_WIDGET_INST.WIDGET_ID
inner JOIN dbo.FD_INFA_OPB_SUBJECT OPB_SUBJECT on
OPB_SUBJECT.SUBJ_ID=OPB_TARG.SUBJ_ID
AND OPB_WIDGET_INST.WIDGET_TYPE = 2
AND OPB_MAPPING.REF_WIDGET_ID = 0
AND OPB_MAPPING.IS_VISIBLE in(1,2)
AND OPB_TARG.IS_VISIBLE in( 1,2)
AND OPB_MAPPING.PROJECT_ID= -511779242
使此块成为CTE并加入.
希望对您有帮助.
make this block to CTE and Join.
I Hope it will help for you.
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