ABAP Select data from SAP table PMPEOACOMPUNION into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PMPEOACOMPUNION 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 PMPEOACOMPUNION. 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 PMPEOACOMPUNION 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_PMPEOACOMPUNION TYPE STANDARD TABLE OF PMPEOACOMPUNION,
      WA_PMPEOACOMPUNION TYPE PMPEOACOMPUNION,
      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: <PMPEOACOMPUNION> TYPE PMPEOACOMPUNION.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMPEOACOMPUNION
*  INTO TABLE @DATA(IT_PMPEOACOMPUNION2).
*--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_PMPEOACOMPUNION INDEX 1 INTO DATA(WA_PMPEOACOMPUNION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMPEOACOMPUNION>-MANDT = 1.
<PMPEOACOMPUNION>-OPACTYNTWKINSTANCE = 1.
<PMPEOACOMPUNION>-OPACTYNTWKELEMENT = 1.
<PMPEOACOMPUNION>-RESERVATION = 1.
<PMPEOACOMPUNION>-RESERVATIONITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMPEOACOMPUNION-RECORDTYPE, sy-vline,
  WA_PMPEOACOMPUNION-MATERIAL, sy-vline,
  WA_PMPEOACOMPUNION-PLANT, sy-vline,
  WA_PMPEOACOMPUNION-STORAGELOCATION, sy-vline,
  WA_PMPEOACOMPUNION-PRODUCTIONPLANT, sy-vline,
  WA_PMPEOACOMPUNION-ASSEMBLYSEQUENCENUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMPEOACOMPUNION 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_PMPEOACOMPUNION 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_PMPEOACOMPUNION INTO WA_PMPEOACOMPUNION.


*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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PMPEOACOMPUNION-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMPEOACOMPUNION-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PMPEOACOMPUNION-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMPEOACOMPUNION-BASEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field BILLOFMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PMPEOACOMPUNION-BILLOFMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMPEOACOMPUNION-BILLOFMATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field BILLOFMATERIALINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PMPEOACOMPUNION-BILLOFMATERIALINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMPEOACOMPUNION-BILLOFMATERIALINTERNALID.
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_PMPEOACOMPUNION_STR, 
MANDT TYPE STRING,
OPACTYNTWKINSTANCE TYPE STRING,
OPACTYNTWKELEMENT TYPE STRING,
RESERVATION TYPE STRING,
RESERVATIONITEM TYPE STRING,
RECORDTYPE TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
STORAGELOCATION TYPE STRING,
PRODUCTIONPLANT TYPE STRING,
ASSEMBLYSEQUENCENUMBER TYPE STRING,
BASEUNIT TYPE STRING,
MFGORDERCOMPONENTUSAGEQUANTITY TYPE STRING,
REQUIREDQUANTITY TYPE STRING,
MATERIALCOMPONENTQUANTITY TYPE STRING,
ISBULKMATERIALCOMPONENT TYPE STRING,
MATLCOMPISMARKEDFORBACKFLUSH TYPE STRING,
GOODSMOVEMENTISALLOWED TYPE STRING,
MATERIALCOMPONENTISMISSING TYPE STRING,
RESERVATIONISFINALLYISSUED TYPE STRING,
MATLCOMPDISCONTINUATIONTYPE TYPE STRING,
RELATEDRESERVATION TYPE STRING,
RELATEDRESERVATIONITEM TYPE STRING,
RELATEDRECORDTYPE TYPE STRING,
RELATEDOPACTYNTWKINSTANCE TYPE STRING,
RELATEDOPACTYNTWKELEMENT TYPE STRING,
LEADINGRESERVATION TYPE STRING,
LEADINGRESERVATIONITEM TYPE STRING,
LEADINGRESERVATIONRECORDTYPE TYPE STRING,
LEADINGOPACTYNTWKINSTANCE TYPE STRING,
LEADINGOPACTYNTWKELEMENT TYPE STRING,
BILLOFMATERIALCATEGORY TYPE STRING,
BILLOFMATERIAL TYPE STRING,
BOMITEM TYPE STRING,
BOMITEMINTERNALCHANGECOUNT TYPE STRING,
BILLOFMATERIALINTERNALID TYPE STRING,
BOMITEMCATEGORY TYPE STRING,
BOOOPBOMITEMINTERNALID TYPE STRING,
LOGICALCOMPONENT TYPE STRING,
MFGREFSTRUCBOMLEAFASSGMTUUID TYPE STRING,
MFGREFSTRUCTUREITEMDETAILUUID TYPE STRING,
MFGREFSTRUCITMDETISCONTEXTUAL TYPE STRING,
MATLCOMPINSTCEASSYISREQUIRED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMPEOACOMPUNION_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_PMPEOACOMPUNION_STR-MANDT sy-vline 
WA_PMPEOACOMPUNION_STR-OPACTYNTWKINSTANCE sy-vline 
WA_PMPEOACOMPUNION_STR-OPACTYNTWKELEMENT sy-vline 
WA_PMPEOACOMPUNION_STR-RESERVATION sy-vline 
WA_PMPEOACOMPUNION_STR-RESERVATIONITEM sy-vline 
WA_PMPEOACOMPUNION_STR-RECORDTYPE sy-vline 
WA_PMPEOACOMPUNION_STR-MATERIAL sy-vline 
WA_PMPEOACOMPUNION_STR-PLANT sy-vline 
WA_PMPEOACOMPUNION_STR-STORAGELOCATION sy-vline 
WA_PMPEOACOMPUNION_STR-PRODUCTIONPLANT sy-vline 
WA_PMPEOACOMPUNION_STR-ASSEMBLYSEQUENCENUMBER sy-vline 
WA_PMPEOACOMPUNION_STR-BASEUNIT sy-vline 
WA_PMPEOACOMPUNION_STR-MFGORDERCOMPONENTUSAGEQUANTITY sy-vline 
WA_PMPEOACOMPUNION_STR-REQUIREDQUANTITY sy-vline 
WA_PMPEOACOMPUNION_STR-MATERIALCOMPONENTQUANTITY sy-vline 
WA_PMPEOACOMPUNION_STR-ISBULKMATERIALCOMPONENT sy-vline 
WA_PMPEOACOMPUNION_STR-MATLCOMPISMARKEDFORBACKFLUSH sy-vline 
WA_PMPEOACOMPUNION_STR-GOODSMOVEMENTISALLOWED sy-vline 
WA_PMPEOACOMPUNION_STR-MATERIALCOMPONENTISMISSING sy-vline 
WA_PMPEOACOMPUNION_STR-RESERVATIONISFINALLYISSUED sy-vline 
WA_PMPEOACOMPUNION_STR-MATLCOMPDISCONTINUATIONTYPE sy-vline 
WA_PMPEOACOMPUNION_STR-RELATEDRESERVATION sy-vline 
WA_PMPEOACOMPUNION_STR-RELATEDRESERVATIONITEM sy-vline 
WA_PMPEOACOMPUNION_STR-RELATEDRECORDTYPE sy-vline 
WA_PMPEOACOMPUNION_STR-RELATEDOPACTYNTWKINSTANCE sy-vline 
WA_PMPEOACOMPUNION_STR-RELATEDOPACTYNTWKELEMENT sy-vline 
WA_PMPEOACOMPUNION_STR-LEADINGRESERVATION sy-vline 
WA_PMPEOACOMPUNION_STR-LEADINGRESERVATIONITEM sy-vline 
WA_PMPEOACOMPUNION_STR-LEADINGRESERVATIONRECORDTYPE sy-vline 
WA_PMPEOACOMPUNION_STR-LEADINGOPACTYNTWKINSTANCE sy-vline 
WA_PMPEOACOMPUNION_STR-LEADINGOPACTYNTWKELEMENT sy-vline 
WA_PMPEOACOMPUNION_STR-BILLOFMATERIALCATEGORY sy-vline 
WA_PMPEOACOMPUNION_STR-BILLOFMATERIAL sy-vline 
WA_PMPEOACOMPUNION_STR-BOMITEM sy-vline 
WA_PMPEOACOMPUNION_STR-BOMITEMINTERNALCHANGECOUNT sy-vline 
WA_PMPEOACOMPUNION_STR-BILLOFMATERIALINTERNALID sy-vline 
WA_PMPEOACOMPUNION_STR-BOMITEMCATEGORY sy-vline 
WA_PMPEOACOMPUNION_STR-BOOOPBOMITEMINTERNALID sy-vline 
WA_PMPEOACOMPUNION_STR-LOGICALCOMPONENT sy-vline 
WA_PMPEOACOMPUNION_STR-MFGREFSTRUCBOMLEAFASSGMTUUID sy-vline 
WA_PMPEOACOMPUNION_STR-MFGREFSTRUCTUREITEMDETAILUUID sy-vline 
WA_PMPEOACOMPUNION_STR-MFGREFSTRUCITMDETISCONTEXTUAL sy-vline 
WA_PMPEOACOMPUNION_STR-MATLCOMPINSTCEASSYISREQUIRED sy-vline      INTO ld_text SEPARATED BY SPACE.

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