ABAP Select data from SAP table MDXMAP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDXMAP
*  INTO TABLE @DATA(IT_MDXMAP2).
*--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_MDXMAP INDEX 1 INTO DATA(WA_MDXMAP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDXMAP>-UNAME = 1.
<MDXMAP>-LIFNR = 1.
<MDXMAP>-AF_SS = 1.
<MDXMAP>-AF_MS = 1.
<MDXMAP>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDXMAP-BERID, sy-vline,
  WA_MDXMAP-PLSCN, sy-vline,
  WA_MDXMAP-PRGRP, sy-vline,
  WA_MDXMAP-DSP01, sy-vline,
  WA_MDXMAP-BSTKZ, sy-vline,
  WA_MDXMAP-BANKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDXMAP 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_MDXMAP 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_MDXMAP INTO WA_MDXMAP.


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

*Conversion exit MATN1, internal->external for field PRGRP
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MDXMAP-PRGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDXMAP-PRGRP.
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_MDXMAP_STR, 
UNAME TYPE STRING,
LIFNR TYPE STRING,
AF_SS TYPE STRING,
AF_MS TYPE STRING,
WERKS TYPE STRING,
BERID TYPE STRING,
PLSCN TYPE STRING,
PRGRP TYPE STRING,
DSP01 TYPE STRING,
BSTKZ TYPE STRING,
BANKZ TYPE STRING,
PAUKZ TYPE STRING,
DTLFV TYPE STRING,
DTLFB TYPE STRING,
ORDKZ TYPE STRING,
MAABC TYPE STRING,
DISMM TYPE STRING,
BESKZ TYPE STRING,
SOBSL TYPE STRING,
SELKZ1 TYPE STRING,
SELKZ2 TYPE STRING,
SELKZ3 TYPE STRING,
SELKZ4 TYPE STRING,
SELKZ5 TYPE STRING,
SELKZ6 TYPE STRING,
SELKZ7 TYPE STRING,
SELKZ8 TYPE STRING,
RWTYP TYPE STRING,
RWGR1 TYPE STRING,
RWGR2 TYPE STRING,
BDBKZ TYPE STRING,
NAUKZ TYPE STRING,
SGSEL TYPE STRING,
ORDCK TYPE STRING,
TXWRK TYPE STRING,
BERTX TYPE STRING,
LIFTX TYPE STRING,
PLSCT TYPE STRING,
TSPAN TYPE STRING,
RALT1 TYPE STRING,
RALT2 TYPE STRING,
VRFWE TYPE STRING,
BEDVL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDXMAP_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_MDXMAP_STR-UNAME sy-vline 
WA_MDXMAP_STR-LIFNR sy-vline 
WA_MDXMAP_STR-AF_SS sy-vline 
WA_MDXMAP_STR-AF_MS sy-vline 
WA_MDXMAP_STR-WERKS sy-vline 
WA_MDXMAP_STR-BERID sy-vline 
WA_MDXMAP_STR-PLSCN sy-vline 
WA_MDXMAP_STR-PRGRP sy-vline 
WA_MDXMAP_STR-DSP01 sy-vline 
WA_MDXMAP_STR-BSTKZ sy-vline 
WA_MDXMAP_STR-BANKZ sy-vline 
WA_MDXMAP_STR-PAUKZ sy-vline 
WA_MDXMAP_STR-DTLFV sy-vline 
WA_MDXMAP_STR-DTLFB sy-vline 
WA_MDXMAP_STR-ORDKZ sy-vline 
WA_MDXMAP_STR-MAABC sy-vline 
WA_MDXMAP_STR-DISMM sy-vline 
WA_MDXMAP_STR-BESKZ sy-vline 
WA_MDXMAP_STR-SOBSL sy-vline 
WA_MDXMAP_STR-SELKZ1 sy-vline 
WA_MDXMAP_STR-SELKZ2 sy-vline 
WA_MDXMAP_STR-SELKZ3 sy-vline 
WA_MDXMAP_STR-SELKZ4 sy-vline 
WA_MDXMAP_STR-SELKZ5 sy-vline 
WA_MDXMAP_STR-SELKZ6 sy-vline 
WA_MDXMAP_STR-SELKZ7 sy-vline 
WA_MDXMAP_STR-SELKZ8 sy-vline 
WA_MDXMAP_STR-RWTYP sy-vline 
WA_MDXMAP_STR-RWGR1 sy-vline 
WA_MDXMAP_STR-RWGR2 sy-vline 
WA_MDXMAP_STR-BDBKZ sy-vline 
WA_MDXMAP_STR-NAUKZ sy-vline 
WA_MDXMAP_STR-SGSEL sy-vline 
WA_MDXMAP_STR-ORDCK sy-vline 
WA_MDXMAP_STR-TXWRK sy-vline 
WA_MDXMAP_STR-BERTX sy-vline 
WA_MDXMAP_STR-LIFTX sy-vline 
WA_MDXMAP_STR-PLSCT sy-vline 
WA_MDXMAP_STR-TSPAN sy-vline 
WA_MDXMAP_STR-RALT1 sy-vline 
WA_MDXMAP_STR-RALT2 sy-vline 
WA_MDXMAP_STR-VRFWE sy-vline 
WA_MDXMAP_STR-BEDVL sy-vline      INTO ld_text SEPARATED BY SPACE.

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