Question

I’d like to write a delete script that deletes rows out of the bridge table (acucore_securitypermission). Right now, this SELECT query (that will be the rows I’d like to delete) doesn’t work. I get red underlines on the line containing the “NOT EXISTS”. The only difference from the first and second snippet is the SELECT * vs. DELETE. Also, if you have some improvements that I can make to my delete to make it cleaner (without repetition), I’m always looking for tips.

SELECT script that doesn’t work:

SELECT groupname
FROM dbo.acucore_securitycontainer
INNER JOIN dbo.acucore_securitypermission ON dbo.acucore_securitycontainer.esid = dbo.acucore_securitypermission.esid
INNER JOIN dbo.acucore_securitygroup ON dbo.acucore_securitypermission.entityid = dbo.acucore_securitygroup.entityid
WHERE containername LIKE '%:UI.Web.AccessioningDashboard'
AND groupname NOT EXISTS -- <-------- I get red error underlines here!
(
    SELECT 
        groupname
    FROM dbo.acucore_securitycontainer
    INNER JOIN dbo.acucore_securitypermission ON dbo.acucore_securitycontainer.esid = dbo.acucore_securitypermission.esid
    INNER JOIN dbo.acucore_securitygroup ON dbo.acucore_securitypermission.entityid = dbo.acucore_securitygroup.entityid
    WHERE containername = 'UI.Web.AccessioningDashboard'
    AND permissions = 1
)

DELETE script that I want to eventually run:

DELETE FROM dbo.acucore_securitycontainer
INNER JOIN dbo.acucore_securitypermission ON dbo.acucore_securitycontainer.esid = dbo.acucore_securitypermission.esid
INNER JOIN dbo.acucore_securitygroup ON dbo.acucore_securitypermission.entityid = dbo.acucore_securitygroup.entityid
WHERE containername LIKE '%:UI.Web.AccessioningDashboard'
AND groupname NOT EXISTS 
(
    SELECT 
        groupname
    FROM dbo.acucore_securitycontainer
    INNER JOIN dbo.acucore_securitypermission ON dbo.acucore_securitycontainer.esid = dbo.acucore_securitypermission.esid
    INNER JOIN dbo.acucore_securitygroup ON dbo.acucore_securitypermission.entityid = dbo.acucore_securitygroup.entityid
    WHERE containername = 'UI.Web.AccessioningDashboard'
    AND permissions = 1
)

=====================

UPDATE 12/1/2011 @ 3:05pm

Okay, to finish this, I want to delete from the acucore_securitypermission bridge table. There are two keys in this table. How can I finish this? The SELECT query is the WHERE part containing the two key values.

DELETE FROM dbo.acucore_securitypermission
 .... ????

SELECT 
    dbo.acucore_securitypermission.entityid,
    dbo.acucore_securitypermission.esid
FROM dbo.acucore_securitycontainer
INNER JOIN dbo.acucore_securitypermission ON dbo.acucore_securitycontainer.esid = dbo.acucore_securitypermission.esid
INNER JOIN dbo.acucore_securitygroup ON dbo.acucore_securitypermission.entityid = dbo.acucore_securitygroup.entityid
WHERE containername LIKE '%:UI.Web.AccessioningDashboard'
AND groupname NOT IN
(
    SELECT 
        groupname
    FROM dbo.acucore_securitycontainer
    INNER JOIN dbo.acucore_securitypermission ON dbo.acucore_securitycontainer.esid = dbo.acucore_securitypermission.esid
    INNER JOIN dbo.acucore_securitygroup ON dbo.acucore_securitypermission.entityid = dbo.acucore_securitygroup.entityid
    WHERE containername = 'UI.Web.AccessioningDashboard'
    AND permissions = 1
)

==========

Final Answer:

DELETE FROM dbo.acucore_securitypermission
WHERE 
    'ENTITYID:' + cast(dbo.acucore_securitypermission.entityid as VARCHAR(64)) + '|' 
    + 'ESID:' + cast(dbo.acucore_securitypermission.esid as VARCHAR(64)) IN
(
    SELECT 
    --groupname,
    --containername,
    --dbo.acucore_securitypermission.esid ,
    --dbo.acucore_securitypermission.entityid ,
    --dbo.acucore_securitypermission.permissions        
        'ENTITYID:' + cast(dbo.acucore_securitypermission.entityid as VARCHAR(64)) + '|' 
        + 'ESID:' + cast(dbo.acucore_securitypermission.esid as VARCHAR(64))
    FROM dbo.acucore_securitypermission
    JOIN dbo.acucore_securitycontainer ON dbo.acucore_securitypermission.esid = dbo.acucore_securitycontainer.esid
    JOIN dbo.acucore_securitygroup ON dbo.acucore_securitypermission.entityid = dbo.acucore_securitygroup.entityid
    WHERE containername LIKE 'S:UI.Web.AccessioningDashboard'
    AND groupname NOT IN
    (
        SELECT 
            CASE WHEN groupname IN ('Accessioning', 'Screening', 'Positive Certify', 'Negative Certify', 'Confirmation') THEN 'Saliva: ' + groupname ELSE groupname END
        FROM dbo.acucore_securitypermission
        JOIN dbo.acucore_securitycontainer ON dbo.acucore_securitypermission.esid = dbo.acucore_securitycontainer.esid
        JOIN dbo.acucore_securitygroup ON dbo.acucore_securitypermission.entityid = dbo.acucore_securitygroup.entityid
        WHERE containername = 'UI.Web.AccessioningDashboard'
        AND permissions = 1
    )
)

Answer 1

Try using “NOT IN” instead of “NOT EXISTS”.

Edit 12/01/2011 15:24

For the delete, you could verify the existence of both keys by converting them to a varchar and then concatenating them into a single string. That would allow you to make the “IN” work.

DELETE FROM dbo.acucore_securitypermission
WHERE cast(entityid as VARCHAR(64)) + '-' + cast(esid as VARCHAR(64)) IN
(
    SELECT cast(entityid as VARCHAR(64)) + '-' + cast(esid as VARCHAR(64))
    FROM dbo.acucore_securitycontainer
    INNER JOIN dbo.acucore_securitypermission ON dbo.acucore_securitycontainer.esid = dbo.acucore_securitypermission.esid
    INNER JOIN dbo.acucore_securitygroup ON dbo.acucore_securitypermission.entityid = dbo.acucore_securitygroup.entityid
    WHERE containername LIKE '%:UI.Web.AccessioningDashboard'
    AND groupname NOT IN
    (
        SELECT groupname
        FROM dbo.acucore_securitycontainer
        INNER JOIN dbo.acucore_securitypermission ON dbo.acucore_securitycontainer.esid = dbo.acucore_securitypermission.esid
        INNER JOIN dbo.acucore_securitygroup ON dbo.acucore_securitypermission.entityid = dbo.acucore_securitygroup.entityid
        WHERE containername = 'UI.Web.AccessioningDashboard'
        AND permissions = 1
    )
)

Like a camel, it’s ugly but it should get the job done.