Subquery in the select clause and not "a group by expression" error.

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• Listagg function gives ORA-00979: not a GROUP BY expression error

  Hello

  I have an environment that supports the Listagg function. Suite works perfectly:

  Select task_code, LISTAGG(ename||) e ('| role |') (',',') WITHIN GROUP (ORDER BY ename) as employees

  team

  where task_code = '01.07.05'

  Task_code group

  However, this is just a test request, the real is a little wider and I can't get the function works, I get ORA-00979: not a GROUP BY expression error.

  Here's my query (the column names are in Dutch, but that shouldn't really be a problem):

  SELECT distinct op_sod.sod_code, op_sod.sod_omschr_lang, op_ood.ood_code, op_ood.ood_omschr_lang, op_activiteit.act_code, op_activiteit.act_omschr_lang, op_taak.taak_code, op_taak.taak_omschr_lang, op_afdeling___master.afd_code, op_taak.belmo, op_taak_j.planning_la,

  LISTAGG (op_ploeg.wn_naam |) ' ('| op_ploeg.rol |') (',',') WITHIN GROUP (ORDER BY op_ploeg.wn_naam) as employees.

  "Write subtaak/mijlpaal toe."

  op_teamplanning.subtaak_mijlpaal as subtaak_of_mijlpaal,

  op_teamplanning.subtaak_omschr | -case when op_teamplanning.subtaak_mijlpaal = 'BELMO Mijlpaal' then ' (BRUNO mijlpaalnr: ' | nvl (op_teamplanning.nummer, 0) |) ')' other ' ' end

  as subtaak_mijlpaal_omschrijving, op_teamplanning.deadline as date limit, op_teamplanning.status as status,

  trim (both

  case when op_teamplanning.vlag1 = 'Geen' and op_teamplanning.vlag2 = 'Geen' and op_teamplanning.vlag3 = 'Geen' and op_teamplanning.vlag4 = 'Geen'

  and op_teamplanning.vlag5 = 'Geen' or op_teamplanning.vlag1 is null and op_teamplanning.vlag2 is null and op_teamplanning.vlag3 is null

  op_teamplanning.vlag5 is null and op_teamplanning.vlag4 is null then 'Geen '.

  Another pad (both case when op_teamplanning.vlag1 = 'Geen' then "else trim (both from op_teamplanning.vlag1) end) |

  trim (both case when op_teamplanning.vlag2 = 'Geen' then "another ',' | trim (both from op_teamplanning.vlag2) end) |

  trim (both case when op_teamplanning.vlag3 = 'Geen' then "another ',' | trim (both from op_teamplanning.vlag3) end) |

  trim (both case when op_teamplanning.vlag4 = 'Geen' then "another ',' | trim (both from op_teamplanning.vlag4) end) |

  trim (both case when op_teamplanning.vlag5 = 'Geen' then "another ',' | trim (both from op_teamplanning.vlag5) end) end) as Beleidsvlaggen,

  op_teamplanning.naam_verantw as quotation, op_teamplanning.subtaak_id as subtaak_id, nvl (op_teamplanning.nummer, 0) as Nummer, nvl (op_teamplanning.regelgevingsagenda, 'Nee') as

  Regelgeving, op_teamplan_subsubtaak.subsubtaak_submijlpaal as subsubtaak_submijlpaal, op_teamplan_subsubtaak.subsubtaak_id as subsubtaak_id, op_teamplan_subsubtaak.subsubtaak_omschr

  like subsubtaak_omschr, op_teamplan_subsubtaak.deadline, sub_deadline, op_teamplan_subsubtaak.status as sub_status, op_teamplan_subsubtaak.naam_verantw as naam_verantw

  Of...

  WHERE THE...

  Group of op_sod.sod_code, op_sod.sod_omschr_lang, op_ood.ood_code, op_ood.ood_omschr_lang, op_activiteit.act_code, op_activiteit.act_omschr_lang, op_taak.taak_code, op_taak.taak_omschr_lang, op_afdeling___master.afd_code, op_taak.belmo, op_taak_j.planning_la

  
  

  Can someone tell me the reason for this error?

  Thanks in advance!

  Kind regards

  NDG

  NDG123 wrote:

  I don't really understand your other question:

  Is below for example, a group of expression?

  op_teamplanning.subtaak_mijlpaal

  After some additional research:

  The group by mistake is not appear anymore when I delete all fields after the listagg field, that might be a clue to the solution.

  It is not difficult to understand. You can have other columns not aggregated in your projection on the side of those listed in the group by expression.

  The reason for ORA-01489 is that the resulting string will become long and exceeds 4000 bytes.

  You will find several solution in this forum.

  For example

  Re: Listagg function excdding 4000 characters

• Not a group by expression error

  Hello

  Can you please tell me why the query below is to launch one isn't a group by expression error

  Select count (*),

  TO_CHAR (date, "YYYYMM") table

  To_char (date, 'yyyymm') group;

  Basically I want a count by month.

  Help, please

  Thank you

  Check the status of Tom on this thread, which seems similar to your problem:

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• ORA-00979: not a GROUP BY expression error

  Hi all
  
  I added a GROUP BY clause that includes all expressions of individual column listed.
  I don't know why this error occurs. ?
  How could I solve this problem?
  
  
  

  SELECT site_to_data_source_lane_v.site_id,  
          site_to_data_source_lane_v.site_lane_id,
          traffic_record.record_id,
          traffic_record.datetime,
          NVL(traffic_class.v_class, 0),
          NVL(SUM(traffic_status.status_code), 0) vehicle_status_count,  
          NVL(COUNT(traffic_error.error_code), 0)  vehicle_error_count ,
          NVL(site_to_data_source_lane_v.site_lane_id, 0) ,
          NVL(traffic_status.status_code, 0),
          NVL(traffic_error.error_code, 0)
      FROM traffic_record
      LEFT OUTER JOIN traffic_class
        ON traffic_record.record_id = traffic_class.record_id    
      LEFT OUTER JOIN traffic_error
        ON traffic_record.record_id =traffic_error.record_id              
      LEFT OUTER JOIN traffic_status
        ON traffic_record.record_id =traffic_status.record_id         
      JOIN site_to_data_source_lane_v
        ON traffic_record.data_source_id = site_to_data_source_lane_v.data_source_id
       AND traffic_record.lane = site_to_data_source_lane_v.data_source_lane_id
      JOIN edr_rpt_tmp_report_lanes
        ON site_to_data_source_lane_v.site_lane_id = edr_rpt_tmp_report_lanes.site_lane_id
      JOIN edr_rpt_tmp_report_classes
        ON NVL(traffic_class.v_class, 0) = edr_rpt_tmp_report_classes.class_id
      JOIN edr_rpt_tmp_inclusion_table
        ON TRUNC(traffic_record.datetime) = TRUNC(edr_rpt_tmp_inclusion_table.date_time)
     WHERE site_to_data_source_lane_v.site_id = 32
       AND traffic_record.datetime >= to_timestamp('07/01/2008 00:00:00', 'mm/dd/yyyy hh24:mi:ss')
       AND traffic_record.datetime <  to_timestamp('07/31/2008 00:00:00', 'mm/dd/yyyy hh24:mi:ss') 
       GROUP BY site_id,                        
                            site_lane_id,
                            record_id,
                            date_time,
                            v_class,                
                            status_code,
                error_code;
                

  You choose: -.

  site_to_data_source_lane_v.Site_ID,
  site_to_data_source_lane_v.site_lane_id,
  traffic_record.record_id,
  traffic_record. DateTime,
  NVL (traffic_class.v_class, 0),
  NVL (Sum (traffic_status.status_code), 0) vehicle_status_count,
  NVL (Count (traffic_error. (Error_code), 0) vehicle_error_count,
  NVL (site_to_data_source_lane_v.site_lane_id, 0),
  NVL (traffic_status.status_code, 0),
  NVL (traffic_error.error_code, 0)

  But you are a grouping by

  Site_ID,
  site_lane_id,
  record_id,
  Date_Time,
  v_class,
  status_code,
  Error_code

  Quite a few differences...

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  Hello

  Doc Oracle says the following on the identifiers in the SELECT in PL/SQL clause: there is no possibility of ambiguity in the SELECT clause because any identifier in the SELECT clause must be a database column name.

  If we assume that only valid column identifier are allowed in the SELECT clause.

  But I tried the following:

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  Hello

  rep0ne wrote:

  Hello

  Doc Oracle says the following on the identifiers in the SELECT in PL/SQL clause: there is no possibility of ambiguity in the SELECT clause because any identifier in the SELECT clause must be a database column name.

  If we assume that only valid column identifier are allowed in the SELECT clause.

  Post a link to this Oracle doc.

  But I tried the following:

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  4. BEGIN
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  6. DBMS_OUTPUT. Put_line (Auntie);
  7. END;
  8. /

  And there is no error telling me that toto is not a column in the employees table and the result is the same as: toto: = aunt;

  ...

  You're right that toto is an identifier, but this isn't a column name.  (Of a subquery) column alias are not database of the names of columns either, nor are the names of the user-defined function.

  Also, there is a possibility for ambiguity even if all the names are the database column names.

  Won't the doc or did I just miss something?

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