ABAP Select data from SAP table MMPUR_OUTLINE_MMPA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_OUTLINE_MMPA
*  INTO TABLE @DATA(IT_MMPUR_OUTLINE_MMPA2).
*--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_MMPUR_OUTLINE_MMPA INDEX 1 INTO DATA(WA_MMPUR_OUTLINE_MMPA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_OUTLINE_MMPA>-SAPCLIENT = 1.
<MMPUR_OUTLINE_MMPA>-PURCHASINGDOCUMENT = 1.
<MMPUR_OUTLINE_MMPA>-PURCHASINGDOCUMENTITEM = 1.
<MMPUR_OUTLINE_MMPA>-PURCHASINGORGANIZATION = 1.
<MMPUR_OUTLINE_MMPA>-SUPPLIERSUBRANGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_OUTLINE_MMPA-PLANT, sy-vline,
  WA_MMPUR_OUTLINE_MMPA-STANDARDAGREEMENT, sy-vline,
  WA_MMPUR_OUTLINE_MMPA-INITIALPARTNERFUNCTION, sy-vline,
  WA_MMPUR_OUTLINE_MMPA-PARTNERCOUNTER, sy-vline,
  WA_MMPUR_OUTLINE_MMPA-CREATEDBYUSER, sy-vline,
  WA_MMPUR_OUTLINE_MMPA-LASTCHANGEDDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_OUTLINE_MMPA 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_MMPUR_OUTLINE_MMPA 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_MMPUR_OUTLINE_MMPA INTO WA_MMPUR_OUTLINE_MMPA.


*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_MMPUR_OUTLINE_MMPA-PURCHASINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_OUTLINE_MMPA-PURCHASINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PARVW, internal->external for field INITIALPARTNERFUNCTION
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_OUTLINE_MMPA-INITIALPARTNERFUNCTION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_OUTLINE_MMPA-INITIALPARTNERFUNCTION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFERENCESUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_OUTLINE_MMPA-REFERENCESUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_OUTLINE_MMPA-REFERENCESUPPLIER.
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_MMPUR_OUTLINE_MMPA_STR, 
SAPCLIENT TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
SUPPLIERSUBRANGE TYPE STRING,
PLANT TYPE STRING,
STANDARDAGREEMENT TYPE STRING,
INITIALPARTNERFUNCTION TYPE STRING,
PARTNERCOUNTER TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDDATE TYPE STRING,
REFERENCESUPPLIER TYPE STRING,
DEFAULTPARTNER TYPE STRING,
SUPPLIERHIERARCHYCATEGORY TYPE STRING,
CONTACTPERSON TYPE STRING,
PRMTHBPERSONNELNUMBER TYPE STRING,
SUPLRPURGORGISRLVTFORPRICEDETN TYPE STRING,
SUPLRISSUBJTOSUBSQNTSETTLEMENT TYPE STRING,
HIERARCHYLEVEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_OUTLINE_MMPA_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_MMPUR_OUTLINE_MMPA_STR-SAPCLIENT sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-PURCHASINGDOCUMENT sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-PURCHASINGORGANIZATION sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-SUPPLIERSUBRANGE sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-PLANT sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-STANDARDAGREEMENT sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-INITIALPARTNERFUNCTION sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-PARTNERCOUNTER sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-CREATEDBYUSER sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-LASTCHANGEDDATE sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-REFERENCESUPPLIER sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-DEFAULTPARTNER sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-SUPPLIERHIERARCHYCATEGORY sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-CONTACTPERSON sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-PRMTHBPERSONNELNUMBER sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-SUPLRPURGORGISRLVTFORPRICEDETN sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-SUPLRISSUBJTOSUBSQNTSETTLEMENT sy-vline 
WA_MMPUR_OUTLINE_MMPA_STR-HIERARCHYLEVEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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