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5.6

Need help with a query :-( :: to check and see if items are already reserved

Asked by stu215 in Databases Miscellaneous, SQL Query Syntax, MS SQL Server

Im making a AV equipment reservation form and I need to check to make sure the equipment isnt already reserved.  There should also be a 5 minute window between all meetings in which the equipment can be reserved.

So if you have a room reserved from 9am -10am the query would need to add 5 mins on both
ends 8:55->10:05 and check to see if there are any meetings in that time span that already have AV items reserved.

There are 3 tables ::
    RoomReservation ( holds room info )
    - R_ID = reservation id
    - mtgDate = meeting date
    - mtgTime = start time
    - mtgEnd = end time
    - active = if N all reservations are cancelled
    - room = if N room is cancelled

    AV_Equip ( has a list of all the equipment one could possibly reserve )
    - EQ_ID
    - EQ_Name

    EQ_Req ( has a list of items reserved )
    - R_ID
    - EQ_ID

Here is what i have so far and it doesnt work :-(  ::

SELECT EQ_Name, EQ_ID
FROM AV_Equip
WHERE EQ_ID NOT IN (
      SELECT EQ_ID
      FROM EQ_Req
      WHERE R_ID IN (
            SELECT DISTINCT R_ID
            FROM sfraser.RoomReservations
            WHERE  Active='Y'
                  AND Room = 'Y'
                  AND mtgDate = '#getInfo.mtgDate#'
                  AND ((mtgTime > #getInfo.mtgTime - .0034722#
                  AND mtgTime < #getInfo.mtgEnd + .0034722#)
                  <!--- Starting time does not fall between 5 minutes
                  before the meeting start  nad 5 minutes after the
                  meeting ends --->
                  OR (mtgEnd < #getInfo.mtgTime + .0034722#))))
                  <!--- or the meeting end is later than 5 minutes
                  after the first meeting ends --->
[+][-]09/28/07 07:50 AM, ID: 19979061Accepted Solution

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About this solution

Zones: Databases Miscellaneous, SQL Query Syntax, MS SQL Server
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Solution Provided By: CCongdon
Participating Experts: 3
Solution Grade: B
 
[+][-]09/26/07 01:17 PM, ID: 19966400Expert Comment

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[+][-]09/26/07 01:41 PM, ID: 19966573Expert Comment

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[+][-]09/26/07 02:03 PM, ID: 19966746Expert Comment

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[+][-]09/26/07 02:11 PM, ID: 19966796Expert Comment

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[+][-]09/26/07 02:32 PM, ID: 19966924Expert Comment

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[+][-]09/26/07 02:33 PM, ID: 19966925Expert Comment

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[+][-]09/26/07 02:40 PM, ID: 19966975Expert Comment

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[+][-]09/26/07 02:46 PM, ID: 19967009Assisted Solution

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[+][-]09/26/07 02:49 PM, ID: 19967022Assisted Solution

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[+][-]09/27/07 07:03 AM, ID: 19971254Author Comment

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[+][-]09/27/07 07:11 AM, ID: 19971298Expert Comment

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[+][-]09/27/07 01:47 PM, ID: 19974629Author Comment

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[+][-]03/27/08 01:38 PM, ID: 21225511Author Comment

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