ABAP Select data from SAP table CNMGROUPQUERY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNMGROUPQUERY table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to CNMGROUPQUERY. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the CNMGROUPQUERY table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_CNMGROUPQUERY TYPE STANDARD TABLE OF CNMGROUPQUERY,
      WA_CNMGROUPQUERY TYPE CNMGROUPQUERY,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <CNMGROUPQUERY> TYPE CNMGROUPQUERY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNMGROUPQUERY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNMGROUPQUERY
  INTO TABLE IT_CNMGROUPQUERY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNMGROUPQUERY
*  INTO TABLE @DATA(IT_CNMGROUPQUERY2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_CNMGROUPQUERY INDEX 1 INTO DATA(WA_CNMGROUPQUERY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNMGROUPQUERY ASSIGNING <CNMGROUPQUERY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNMGROUPQUERY>-MANDT = 1.
<CNMGROUPQUERY>-INCIDENTID = 1.
<CNMGROUPQUERY>-INCIDENTUUID = 1.
<CNMGROUPQUERY>-INCIDENTGROUPUUID = 1.
<CNMGROUPQUERY>-NEARMISSGROUPCODE = 1.

ENDLOOP.

LOOP AT IT_CNMGROUPQUERY INTO WA_CNMGROUPQUERY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNMGROUPQUERY-INCIDENTTITLE, sy-vline,
  WA_CNMGROUPQUERY-INCIDENTCATEGORY, sy-vline,
  WA_CNMGROUPQUERY-INCIDENTSTATUS, sy-vline,
  WA_CNMGROUPQUERY-INCIDENTYEAR, sy-vline,
  WA_CNMGROUPQUERY-INCIDENTMONTH, sy-vline,
  WA_CNMGROUPQUERY-INCIDENTWEEKDAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNMGROUPQUERY you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_CNMGROUPQUERY TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_CNMGROUPQUERY INTO WA_CNMGROUPQUERY.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field INCIDENTID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNMGROUPQUERY-INCIDENTID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNMGROUPQUERY-INCIDENTID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EHSLOCATIONID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNMGROUPQUERY-EHSLOCATIONID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNMGROUPQUERY-EHSLOCATIONID.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CNMGROUPQUERY_STR, 
MANDT TYPE STRING,
INCIDENTID TYPE STRING,
INCIDENTUUID TYPE STRING,
INCIDENTGROUPUUID TYPE STRING,
NEARMISSGROUPCODE TYPE STRING,
INCIDENTTITLE TYPE STRING,
INCIDENTCATEGORY TYPE STRING,
INCIDENTSTATUS TYPE STRING,
INCIDENTYEAR TYPE STRING,
INCIDENTMONTH TYPE STRING,
INCIDENTWEEKDAY TYPE STRING,
INCIDENTDATE TYPE STRING,
INCIDENTHOUR TYPE STRING,
INCIDENTTIME TYPE STRING,
EHSLOCATIONID TYPE STRING,
EHSLOCATIONUUID TYPE STRING,
ORGANIZATIONALUNIT TYPE STRING,
PLANT TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
INCIDENTMAJORROOTCAUSE TYPE STRING,
NUMBEROFNEARMISSRECORDS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNMGROUPQUERY_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_CNMGROUPQUERY_STR-MANDT sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTID sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTUUID sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTGROUPUUID sy-vline 
WA_CNMGROUPQUERY_STR-NEARMISSGROUPCODE sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTTITLE sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTCATEGORY sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTSTATUS sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTYEAR sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTMONTH sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTWEEKDAY sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTDATE sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTHOUR sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTTIME sy-vline 
WA_CNMGROUPQUERY_STR-EHSLOCATIONID sy-vline 
WA_CNMGROUPQUERY_STR-EHSLOCATIONUUID sy-vline 
WA_CNMGROUPQUERY_STR-ORGANIZATIONALUNIT sy-vline 
WA_CNMGROUPQUERY_STR-PLANT sy-vline 
WA_CNMGROUPQUERY_STR-COUNTRY sy-vline 
WA_CNMGROUPQUERY_STR-REGION sy-vline 
WA_CNMGROUPQUERY_STR-INCIDENTMAJORROOTCAUSE sy-vline 
WA_CNMGROUPQUERY_STR-NUMBEROFNEARMISSRECORDS sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.