ABAP Select data from SAP table RMMPURSUBCOMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMMPURSUBCOMP
*  INTO TABLE @DATA(IT_RMMPURSUBCOMP2).
*--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_RMMPURSUBCOMP INDEX 1 INTO DATA(WA_RMMPURSUBCOMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMMPURSUBCOMP>-MANDT = 1.
<RMMPURSUBCOMP>-PURCHASINGDOCUMENT = 1.
<RMMPURSUBCOMP>-PURCHASINGDOCUMENTITEM = 1.
<RMMPURSUBCOMP>-SCHEDULELINE = 1.
<RMMPURSUBCOMP>-RESERVATIONITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMMPURSUBCOMP-RECORDTYPE, sy-vline,
  WA_RMMPURSUBCOMP-RESERVATION, sy-vline,
  WA_RMMPURSUBCOMP-MATERIAL, sy-vline,
  WA_RMMPURSUBCOMP-BASEUNIT, sy-vline,
  WA_RMMPURSUBCOMP-REQUIREDQUANTITY, sy-vline,
  WA_RMMPURSUBCOMP-REQUIREMENTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMMPURSUBCOMP 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_RMMPURSUBCOMP 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_RMMPURSUBCOMP INTO WA_RMMPURSUBCOMP.


*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 PURCHASINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RMMPURSUBCOMP-PURCHASINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMMPURSUBCOMP-PURCHASINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field UNITOFMEASUREFORSIZE1TO3
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RMMPURSUBCOMP-UNITOFMEASUREFORSIZE1TO3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMMPURSUBCOMP-UNITOFMEASUREFORSIZE1TO3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CHANGENUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RMMPURSUBCOMP-CHANGENUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMMPURSUBCOMP-CHANGENUMBER.
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_RMMPURSUBCOMP_STR, 
MANDT TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
SCHEDULELINE TYPE STRING,
RESERVATIONITEM TYPE STRING,
RECORDTYPE TYPE STRING,
RESERVATION TYPE STRING,
MATERIAL TYPE STRING,
BASEUNIT TYPE STRING,
REQUIREDQUANTITY TYPE STRING,
REQUIREMENTDATE TYPE STRING,
REQUIREMENTTIME TYPE STRING,
PLANT TYPE STRING,
LATESTREQUIREMENTDATE TYPE STRING,
ORDERLEVELVALUE TYPE STRING,
ORDERPATHVALUE TYPE STRING,
BILLOFMATERIALITEMNUMBER TYPE STRING,
SORTFIELD TYPE STRING,
BOMITEMCATEGORY TYPE STRING,
MATERIALCOMPONENTISPHANTOMITEM TYPE STRING,
ISBULKMATERIALCOMPONENT TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
INVENTORYSPECIALSTOCKTYPE TYPE STRING,
CONSUMPTIONPOSTING TYPE STRING,
INVENTORYSPECIALSTOCKVALNTYPE TYPE STRING,
ISMATERIALPROVISION TYPE STRING,
MATERIALPROVISIONTYPE TYPE STRING,
DEBITCREDITCODE TYPE STRING,
RESERVATIONISFINALLYISSUED TYPE STRING,
QUANTITYINENTRYUNIT TYPE STRING,
ENTRYUNIT TYPE STRING,
MATERIALQTYTOBASEQTYNMRTR TYPE STRING,
MATERIALQTYTOBASEQTYDNMNTR TYPE STRING,
WITHDRAWNQUANTITY TYPE STRING,
QUANTITYISFIXED TYPE STRING,
COMPONENTSCRAPINPERCENT TYPE STRING,
OPERATIONSCRAPINPERCENT TYPE STRING,
ISNETSCRAP TYPE STRING,
LEADTIMEOFFSET TYPE STRING,
QUANTITYDISTRIBUTIONKEY TYPE STRING,
MATERIALREVISIONLEVEL TYPE STRING,
MATERIALCOMPISVARIABLESIZED TYPE STRING,
NUMBEROFVARIABLESIZECOMPONENTS TYPE STRING,
VARIABLESIZEITEMQUANTITY TYPE STRING,
VARIABLESIZEITEMUNIT TYPE STRING,
VARIABLESIZECOMPONENTUNIT TYPE STRING,
VARIABLESIZECOMPONENTQUANTITY TYPE STRING,
UNITOFMEASUREFORSIZE1TO3 TYPE STRING,
SIZE1 TYPE STRING,
SIZE2 TYPE STRING,
SIZE3 TYPE STRING,
FORMULAKEY TYPE STRING,
STORAGELOCATION TYPE STRING,
PRODUCTIONSUPPLYAREA TYPE STRING,
BATCH TYPE STRING,
BOMITEMDESCRIPTION TYPE STRING,
BOMITEMTEXT2 TYPE STRING,
CHANGENUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMMPURSUBCOMP_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_RMMPURSUBCOMP_STR-MANDT sy-vline 
WA_RMMPURSUBCOMP_STR-PURCHASINGDOCUMENT sy-vline 
WA_RMMPURSUBCOMP_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_RMMPURSUBCOMP_STR-SCHEDULELINE sy-vline 
WA_RMMPURSUBCOMP_STR-RESERVATIONITEM sy-vline 
WA_RMMPURSUBCOMP_STR-RECORDTYPE sy-vline 
WA_RMMPURSUBCOMP_STR-RESERVATION sy-vline 
WA_RMMPURSUBCOMP_STR-MATERIAL sy-vline 
WA_RMMPURSUBCOMP_STR-BASEUNIT sy-vline 
WA_RMMPURSUBCOMP_STR-REQUIREDQUANTITY sy-vline 
WA_RMMPURSUBCOMP_STR-REQUIREMENTDATE sy-vline 
WA_RMMPURSUBCOMP_STR-REQUIREMENTTIME sy-vline 
WA_RMMPURSUBCOMP_STR-PLANT sy-vline 
WA_RMMPURSUBCOMP_STR-LATESTREQUIREMENTDATE sy-vline 
WA_RMMPURSUBCOMP_STR-ORDERLEVELVALUE sy-vline 
WA_RMMPURSUBCOMP_STR-ORDERPATHVALUE sy-vline 
WA_RMMPURSUBCOMP_STR-BILLOFMATERIALITEMNUMBER sy-vline 
WA_RMMPURSUBCOMP_STR-SORTFIELD sy-vline 
WA_RMMPURSUBCOMP_STR-BOMITEMCATEGORY sy-vline 
WA_RMMPURSUBCOMP_STR-MATERIALCOMPONENTISPHANTOMITEM sy-vline 
WA_RMMPURSUBCOMP_STR-ISBULKMATERIALCOMPONENT sy-vline 
WA_RMMPURSUBCOMP_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_RMMPURSUBCOMP_STR-INVENTORYSPECIALSTOCKTYPE sy-vline 
WA_RMMPURSUBCOMP_STR-CONSUMPTIONPOSTING sy-vline 
WA_RMMPURSUBCOMP_STR-INVENTORYSPECIALSTOCKVALNTYPE sy-vline 
WA_RMMPURSUBCOMP_STR-ISMATERIALPROVISION sy-vline 
WA_RMMPURSUBCOMP_STR-MATERIALPROVISIONTYPE sy-vline 
WA_RMMPURSUBCOMP_STR-DEBITCREDITCODE sy-vline 
WA_RMMPURSUBCOMP_STR-RESERVATIONISFINALLYISSUED sy-vline 
WA_RMMPURSUBCOMP_STR-QUANTITYINENTRYUNIT sy-vline 
WA_RMMPURSUBCOMP_STR-ENTRYUNIT sy-vline 
WA_RMMPURSUBCOMP_STR-MATERIALQTYTOBASEQTYNMRTR sy-vline 
WA_RMMPURSUBCOMP_STR-MATERIALQTYTOBASEQTYDNMNTR sy-vline 
WA_RMMPURSUBCOMP_STR-WITHDRAWNQUANTITY sy-vline 
WA_RMMPURSUBCOMP_STR-QUANTITYISFIXED sy-vline 
WA_RMMPURSUBCOMP_STR-COMPONENTSCRAPINPERCENT sy-vline 
WA_RMMPURSUBCOMP_STR-OPERATIONSCRAPINPERCENT sy-vline 
WA_RMMPURSUBCOMP_STR-ISNETSCRAP sy-vline 
WA_RMMPURSUBCOMP_STR-LEADTIMEOFFSET sy-vline 
WA_RMMPURSUBCOMP_STR-QUANTITYDISTRIBUTIONKEY sy-vline 
WA_RMMPURSUBCOMP_STR-MATERIALREVISIONLEVEL sy-vline 
WA_RMMPURSUBCOMP_STR-MATERIALCOMPISVARIABLESIZED sy-vline 
WA_RMMPURSUBCOMP_STR-NUMBEROFVARIABLESIZECOMPONENTS sy-vline 
WA_RMMPURSUBCOMP_STR-VARIABLESIZEITEMQUANTITY sy-vline 
WA_RMMPURSUBCOMP_STR-VARIABLESIZEITEMUNIT sy-vline 
WA_RMMPURSUBCOMP_STR-VARIABLESIZECOMPONENTUNIT sy-vline 
WA_RMMPURSUBCOMP_STR-VARIABLESIZECOMPONENTQUANTITY sy-vline 
WA_RMMPURSUBCOMP_STR-UNITOFMEASUREFORSIZE1TO3 sy-vline 
WA_RMMPURSUBCOMP_STR-SIZE1 sy-vline 
WA_RMMPURSUBCOMP_STR-SIZE2 sy-vline 
WA_RMMPURSUBCOMP_STR-SIZE3 sy-vline 
WA_RMMPURSUBCOMP_STR-FORMULAKEY sy-vline 
WA_RMMPURSUBCOMP_STR-STORAGELOCATION sy-vline 
WA_RMMPURSUBCOMP_STR-PRODUCTIONSUPPLYAREA sy-vline 
WA_RMMPURSUBCOMP_STR-BATCH sy-vline 
WA_RMMPURSUBCOMP_STR-BOMITEMDESCRIPTION sy-vline 
WA_RMMPURSUBCOMP_STR-BOMITEMTEXT2 sy-vline 
WA_RMMPURSUBCOMP_STR-CHANGENUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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