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Expert help needed on update where exists syntax.

Posted on 2015-02-02
9
85 Views
Last Modified: 2015-02-04
I am using MS Sql Server

My syntax on lines 2 and 3 below is incorrect. I get the error message : Incorrect syntax near the keyword 'set'.

How can I fix the sql below so that I can update SETTING.Stub = STG.Stub, and SETTINGS.SEC_LVL = STG.FACS_SEC_LVL   ????

Here is my SQL :


1   UPDATE SETTINGS
2   set SETTINGS.Stub = STG.Stub,
3   set SETTING.SEC_LVL =  STG.FACS_SEC_LVL
4   where exists
5   (
6      select ACCOUNT_NUM from SETTINGS WHERE EXISTS
7      (
8         select FACS.ACCOUNT_NUM, STG.FACS_SEC_LVL,STG.FPDA_ALLOWED_VALUE,STG.Stub  
9         FROM SETTINGS FACS
10       INNER JOIN USERS PSUS
11       ON PSUS.PSUS_USER_NUM = FACS.ACCOUNT_NUM
12       INNER JOIN STAGE STG
13       ON STG.PSUS_USER_ID = PSUS.PSUS_USER_ID
14       WHERE FACS.ID = 'I'
15     )  
16  )
0
Comment
Question by:brgdotnet
9 Comments
 
LVL 39

Expert Comment

by:Pratima Pharande
ID: 40585517
UPDATE S
   set S.Stub = STG.Stub,
   set S.SEC_LVL =  STG.FACS_SEC_LVL

From SETTINGS S
   where exists
   (
      select ACCOUNT_NUM from SETTINGS WHERE EXISTS
      (
         select FACS.ACCOUNT_NUM, STG.FACS_SEC_LVL,STG.FPDA_ALLOWED_VALUE,STG.Stub  
         FROM SETTINGS FACS
      INNER JOIN USERS PSUS
       ON PSUS.PSUS_USER_NUM = FACS.ACCOUNT_NUM
       INNER JOIN STAGE STG
       ON STG.PSUS_USER_ID = PSUS.PSUS_USER_ID
       WHERE FACS.ID = 'I'
     )  
 )
0
 
LVL 39

Accepted Solution

by:
Pratima Pharande earned 500 total points
ID: 40585521
Try this

 UPDATE S
   set S.Stub = STG.Stub,
   set S.SEC_LVL =  STG.FACS_SEC_LVL

From SETTINGS S
 INNER JOIN USERS PSUS
       ON PSUS.PSUS_USER_NUM = S.ACCOUNT_NUM
       INNER JOIN STAGE STG
       ON STG.PSUS_USER_ID = PSUS.PSUS_USER_ID
       WHERE S.ID = 'I'
0
 
LVL 48

Expert Comment

by:PortletPaul
ID: 40585525
0
 
LVL 2

Expert Comment

by:Pratik Makwana
ID: 40585552
UPDATE SETTINGS
set SETTINGS.Stub = STG.Stub,
SETTING.SEC_LVL =  STG.FACS_SEC_LVL
where exists
(
select ACCOUNT_NUM from SETTINGS WHERE EXISTS
(
select FACS.ACCOUNT_NUM, STG.FACS_SEC_LVL,STG.FPDA_ALLOWED_VALUE,STG.Stub  
FROM SETTINGS FACS
INNER JOIN USERS PSUS
ON PSUS.PSUS_USER_NUM = FACS.ACCOUNT_NUM
INNER JOIN STAGE STG
ON STG.PSUS_USER_ID = PSUS.PSUS_USER_ID
WHERE FACS.ID = 'I'
)  
)
0
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LVL 48

Expert Comment

by:PortletPaul
ID: 40585676
I agree with ID: 40585521 (except you only need SET once)

You cannot reference the subquery contained within an EXISTS as part of the SET operation. You need to use a JOIN.

UPDATE SETTINGS
SET SETTINGS.Stub = STG.Stub , SETTING.SEC_LVL = STG.FACS_SEC_LVL

that alias STG cannot be used from an item inside the where clause

WHERE exists (....... inner join stage STG .... )  --<< that alias does NOT work at SET!

So, you MUST reference STG as a JOIN

UPDATE SETTINGS
SET SETTINGS.Stub = STG.Stub
  , SETTING.SEC_LVL = STG.FACS_SEC_LVL
FROM SETTINGS
INNER JOIN USERS PSUS
      ON PSUS.PSUS_USER_NUM = SETTINGS.ACCOUNT_NUM
INNER JOIN STAGE STG
      ON STG.PSUS_USER_ID = PSUS.PSUS_USER_ID
WHERE SETTINGS.ID = 'I'
;

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0
 
LVL 32

Expert Comment

by:awking00
ID: 40588628
You might try a common table expression update -
with cte as
(select stg.stub as stub, stg.facs_sec_lvl as facs_sec_lvl, u.psus_user_num as user_num
 from stage as stg
 inner join users as u
 on stg.psus_user_id = u.psus_user_id)
update settings
set stub = cte.stub, sec_lvl = cte.facs_sec_lvl
from settings as s
inner join cte
on s.account_num = cte.user_num
where s.id = 'I';
0
 
LVL 48

Expert Comment

by:PortletPaul
ID: 40589573
whether CTE or not, you still require a JOIN

because you reference columns from another table inside the SET
0
 
LVL 2

Author Comment

by:brgdotnet
ID: 40590236
Thank you, not using a where exists was the best approach.
0

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