How to delete all rows if one row meets a criteria

  • Hi all I am running a query where I check medical orders on an encounter there can be 1000's of orders and if one of them matches a specific criteria we delete all of them. The common thread hear is a CSN #. I am running a CTE and marking a flag column with a 1 if the criteria is hit and 0 otherwise.

    My question is how do I delete this record and the other orders with the same CSN? Can I us a recursive CTE, cross apply? Not sure where to go from here any help appreciated Mahalo, Brew

  • It will be helpful having DDL, sample data, an expected result. That way we do not have to guess column names, data types, etc.

    Help us to be able to help you!

    You can join back the result of the CTE with the original table by the column in common or you can try deleting from the CTE if the conditions to use a CTE as the source are meet.

  • HI thx for the info here's the code

    ;with CteGetMain as (

    SELECT DISTINCT PAT.PAT_NAME as PatName,

    PAT.PAT_MRN_ID as MRN,

    ZBASE.NAME as PatBaseClass,

    ZCLASS.NAME as PatSubClass,

    HSP.HOSP_ADMSN_TIME as AdmissionDate,

    HSP.HOSP_DISCH_TIME as DischargeDate,

    DATEDIFF(DAY, HOSP_ADMSN_TIME, HOSP_DISCH_TIME) as VisitLength,

    CASE

    when

    QST.ORD_QUEST_RESP = 'Admit from OB Triage' then 1

    else 0

    END AS is_AdmitOBTriage,

    ORP3.ORDERING_MODE_C as OrderMode,

    VHX.EVENT_TYPE_C as EventCode,

    DEP.DEPARTMENT_NAME as DeptName,

    HSP.PAT_ENC_CSN_ID as CSN,

    ORP.PROC_CODE as ProcCode,

    EAP.PROC_NAME as ProcName,

    MET.ORDER_DTTM as OrderDate,

    MET.ORDER_ID as OrderID,

    ZTHERA.THERA_CLASS_C as TheraClass,

    MED.ORDER_MED_ID as MedOrderID,

    MED.DISPLAY_NAME AS MedName,

    ATND.PROV_ID as AtndProvID,

    SER.PROV_NAME as AtndProv,

    ATND.LINE as AtndLine,

    SERO.PROV_ID OrderProvID,

    SERO.PROV_NAME as OrderProv,

    SER.PROV_ID AuthID,

    SERA.PROV_NAME as AuthProv,

    case

    When ORP.ORDER_TYPE_C = 9

    or ORP.PROC_CODE in ('DNS3', 'DNS2', 'NUR519', 'NUR519', 'NUR1081', 'NUR1019',

    'NUR305', 'NUR981', 'NUR919', 'Diet87' )

    Then 'Diet'

    When ORP.PROC_CODE in ('ADT1')

    Then 'Admit'

    When ORP.PROC_CODE in ( 'NUR9','NUR162', 'NUR87', 'NUR158', 'NUR25', 'NUR1029', 'NUR11', 'NUR129',

    'NUR130', 'NUR44', 'NUR371', 'NUR511 ','NUR84','PRV9', 'NUR940','NUR25',

    'NUR533','NUR714','NUR79', 'NUR820','NUR52')

    Then 'Activity'

    When ORP.PROC_CODE in ( 'COD1', 'COD2', 'COD3')

    Then 'Code'

    When ZTHERA.THERA_CLASS_C in (1,2,6)

    Then 'Pain'

    END as OrderType

    FROM V_PAT_ADT_LOCATION_HX VHX

    inner join PAT_ENC_HSP HSP

    ON VHX.PAT_ENC_CSN = HSP.PAT_ENC_CSN_ID

    inner join CLARITY_DEP DEP

    ON VHX.ADT_DEPARTMENT_ID = DEP.DEPARTMENT_ID

    inner join PATIENT PAT

    ON HSP.PAT_ID = PAT.PAT_ID

    LEFT OUTER JOIN ORDER_METRICS MET

    ON HSP.PAT_ENC_CSN_ID = MET.PAT_ENC_CSN_ID

    LEFT OUTER JOIN HSP_ATND_PROV ATND

    ON HSP.PAT_ENC_CSN_ID = ATND.PAT_ENC_CSN_ID

    LEFT OUTER JOIN ORDER_MED MED

    ON MET.PAT_ENC_CSN_ID = MED.PAT_ENC_CSN_ID

    LEFT OUTER JOIN ORDER_PROC ORP

    ON MET.ORDER_ID = ORP.ORDER_PROC_ID

    LEFT OUTER JOIN CLARITY_SER SERO

    ON MET.ORDERING_PROV_ID = SERO.PROV_ID

    LEFT OUTER JOIN CLARITY_SER SERA

    ON MET.AUTH_PROV_ID = SERA.PROV_ID

    LEFT OUTER JOIN ORDER_PROC_3 ORP3

    ON ORP.ORDER_PROC_ID = ORP3.ORDER_ID

    LEFT OUTER JOIN CLARITY_MEDICATION CMED

    ON MED.MEDICATION_ID = CMED.MEDICATION_ID

    LEFT OUTER JOIN ZC_THERA_CLASS ZTHERA

    ON CMED.THERA_CLASS_C = ZTHERA.THERA_CLASS_C

    LEFT OUTER JOIN CLARITY_SER SER

    ON ATND.PROV_ID = SER.PROV_ID

    Left outer join CLARITY_EAP EAP

    ON ORP.PROC_ID = EAP.PROC_ID

    Left join HSP_ACCOUNT HACCT

    on HSP.HSP_ACCOUNT_ID = HACCT.HSP_ACCOUNT_ID

    LEFT JOIN ZC_ACCT_BASECLS_HA ZBASE

    on HACCT.ACCT_BASECLS_HA_C = ZBASE.ACCT_BASECLS_HA_C

    Left join ZC_ACCT_CLASS_HA ZClass

    on HACCT.ACCT_CLASS_HA_C = ZClass.ACCT_CLASS_HA_C

    Left join ORD_SPEC_QUEST QST

    on ORP.ORDER_PROC_ID = QST.ORDER_ID --and QST.ORD_QUEST_ID = '100795' and QST.ORD_QUEST_RESP <> 'ADMIT from OB Triage'

    WHERE DEP.DEPARTMENT_NAME not in ('MMC ED ADULT','MMC ED BURN','MMC ED PEDS')

    AND VHX.EVENT_TYPE_C in (1,4,7) -- Admission, Transfer out, Outpatient

    AND ORP3.ORDERING_MODE_C = 2 -- inpatient order mode

    AND HSP.HOSP_ADMSN_TIME >= {ts '2013-08-01 00:00:00'}

    AND HSP.HOSP_ADMSN_TIME <{ts '2013-09-01 00:00:00'}

    AND ATND.LINE = 1 and HSP.PAT_ENC_CSN_ID = '7847189'

    )

    /* Now that we have identified the orders we want in OrderType lets remove all the unnecessary orders

    marked as null so we create a smaller results set for faster processing */

    , CTERemoveNulls as (

    select CteGetMain.*

    from CteGetMain

    where (OrderType is not null))

    select * from CTERemoveNulls

  • From the description, I would suspect you want an IF EXISTS construct. But really need DDL, sample data and expected results to be sure.

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass
  • mittensonmaui (10/22/2013)


    Hi all I am running a query where I check medical orders on an encounter there can be 1000's of orders and if one of them matches a specific criteria we delete all of them. The common thread hear is a CSN #. I am running a CTE and marking a flag column with a 1 if the criteria is hit and 0 otherwise.

    My question is how do I delete this record and the other orders with the same CSN? Can I us a recursive CTE, cross apply? Not sure where to go from here any help appreciated Mahalo, Brew

    You are looking for something like this (note my comments):

    -- let's say we wanted to delete all csn_numbers that have at least one some_value='xxx'

    DECLARE @your_table TABLE

    (xxx_id int identity primary key,

    csn_number int not null,

    some_value varchar(20) null)

    INSERT INTO @your_table VALUES

    (100,'fff'),(100, 'yyy'),(100,'xxx'),(140,'abc'),(150,'xxx'),

    (200,'zzz'),(200, 'abc'),(210,'xxx'),(240,'bbb'),(250,'abc');

    --Here's what's in there now

    SELECT * FROM @your_table;

    WITH kill_list AS

    (

    SELECT * FROM @your_table

    WHERE csn_number IN (

    SELECT csn_number

    FROM @your_table WHERE some_value='xxx' GROUP BY csn_number)

    )

    DELETE FROM kill_list;

    --Here's what's in there now

    SELECT * FROM @your_table

    The cool thing about this technique is that, in SSMS, you can highlight run your SELECT statement first to see what will be deleted.

    "I cant stress enough the importance of switching from a sequential files mindset to set-based thinking. After you make the switch, you can spend your time tuning and optimizing your queries instead of maintaining lengthy, poor-performing code."

    -- Itzik Ben-Gan 2001

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