ABAP Select data from SAP table MRMPO into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MRMPO
*  INTO TABLE @DATA(IT_MRMPO2).
*--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_MRMPO INDEX 1 INTO DATA(WA_MRMPO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MRMPO>-MODUS = 1.
<MRMPO>-FCODE = 1.
<MRMPO>-KZVIEW = 1.
<MRMPO>-KZSORT = 1.
<MRMPO>-KZSORTA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MRMPO-KZVERD, sy-vline,
  WA_MRMPO-IEBELN, sy-vline,
  WA_MRMPO-IXBLNR, sy-vline,
  WA_MRMPO-IWERKS, sy-vline,
  WA_MRMPO-IMATNR, sy-vline,
  WA_MRMPO-IMWSKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MRMPO 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_MRMPO 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_MRMPO INTO WA_MRMPO.


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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MRMPO-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MRMPO-MATNR.
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_MRMPO_STR, 
MODUS TYPE STRING,
FCODE TYPE STRING,
KZVIEW TYPE STRING,
KZSORT TYPE STRING,
KZSORTA TYPE STRING,
KZVERD TYPE STRING,
IEBELN TYPE STRING,
IXBLNR TYPE STRING,
IWERKS TYPE STRING,
IMATNR TYPE STRING,
IMWSKZ TYPE STRING,
IRETPO TYPE STRING,
ISATNR TYPE STRING,
INETPR TYPE STRING,
EXTNR TYPE STRING,
EBELN TYPE STRING,
XBLNR TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
ANZPS TYPE STRING,
DYNNR TYPE STRING,
TITLEPRE TYPE STRING,
REPARTA TYPE STRING,
XBATCH TYPE STRING,
XREPART TYPE STRING,
XCHANGE TYPE STRING,
XKPFCHG TYPE STRING,
XKONCHG TYPE STRING,
XZUOCHG TYPE STRING,
XZUOEXE TYPE STRING,
XSAVED TYPE STRING,
XSELREAD TYPE STRING,
XKORREKTO TYPE STRING,
XUNKLFEH TYPE STRING,
XDB TYPE STRING,
PRHIGH TYPE STRING,
PRLOW TYPE STRING,
RBSTAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MRMPO_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_MRMPO_STR-MODUS sy-vline 
WA_MRMPO_STR-FCODE sy-vline 
WA_MRMPO_STR-KZVIEW sy-vline 
WA_MRMPO_STR-KZSORT sy-vline 
WA_MRMPO_STR-KZSORTA sy-vline 
WA_MRMPO_STR-KZVERD sy-vline 
WA_MRMPO_STR-IEBELN sy-vline 
WA_MRMPO_STR-IXBLNR sy-vline 
WA_MRMPO_STR-IWERKS sy-vline 
WA_MRMPO_STR-IMATNR sy-vline 
WA_MRMPO_STR-IMWSKZ sy-vline 
WA_MRMPO_STR-IRETPO sy-vline 
WA_MRMPO_STR-ISATNR sy-vline 
WA_MRMPO_STR-INETPR sy-vline 
WA_MRMPO_STR-EXTNR sy-vline 
WA_MRMPO_STR-EBELN sy-vline 
WA_MRMPO_STR-XBLNR sy-vline 
WA_MRMPO_STR-WERKS sy-vline 
WA_MRMPO_STR-MATNR sy-vline 
WA_MRMPO_STR-ANZPS sy-vline 
WA_MRMPO_STR-DYNNR sy-vline 
WA_MRMPO_STR-TITLEPRE sy-vline 
WA_MRMPO_STR-REPARTA sy-vline 
WA_MRMPO_STR-XBATCH sy-vline 
WA_MRMPO_STR-XREPART sy-vline 
WA_MRMPO_STR-XCHANGE sy-vline 
WA_MRMPO_STR-XKPFCHG sy-vline 
WA_MRMPO_STR-XKONCHG sy-vline 
WA_MRMPO_STR-XZUOCHG sy-vline 
WA_MRMPO_STR-XZUOEXE sy-vline 
WA_MRMPO_STR-XSAVED sy-vline 
WA_MRMPO_STR-XSELREAD sy-vline 
WA_MRMPO_STR-XKORREKTO sy-vline 
WA_MRMPO_STR-XUNKLFEH sy-vline 
WA_MRMPO_STR-XDB sy-vline 
WA_MRMPO_STR-PRHIGH sy-vline 
WA_MRMPO_STR-PRLOW sy-vline 
WA_MRMPO_STR-RBSTAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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