ABAP Select data from SAP table MDG_BS_MAT_S_MPOP_X into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDG_BS_MAT_S_MPOP_X
*  INTO TABLE @DATA(IT_MDG_BS_MAT_S_MPOP_X2).
*--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_MDG_BS_MAT_S_MPOP_X INDEX 1 INTO DATA(WA_MDG_BS_MAT_S_MPOP_X2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDG_BS_MAT_S_MPOP_X>-MATNR = 1.
<MDG_BS_MAT_S_MPOP_X>-WERKS = 1.
<MDG_BS_MAT_S_MPOP_X>-DELETE_ROW = 1.
<MDG_BS_MAT_S_MPOP_X>-VERSP = 1.
<MDG_BS_MAT_S_MPOP_X>-PROPR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDG_BS_MAT_S_MPOP_X-MODAW, sy-vline,
  WA_MDG_BS_MAT_S_MPOP_X-MODAV, sy-vline,
  WA_MDG_BS_MAT_S_MPOP_X-KZPAR, sy-vline,
  WA_MDG_BS_MAT_S_MPOP_X-OPGRA, sy-vline,
  WA_MDG_BS_MAT_S_MPOP_X-KZINI, sy-vline,
  WA_MDG_BS_MAT_S_MPOP_X-PRMOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDG_BS_MAT_S_MPOP_X 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_MDG_BS_MAT_S_MPOP_X 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_MDG_BS_MAT_S_MPOP_X INTO WA_MDG_BS_MAT_S_MPOP_X.


*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 MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MDG_BS_MAT_S_MPOP_X-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDG_BS_MAT_S_MPOP_X-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_MDG_BS_MAT_S_MPOP_X_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
DELETE_ROW TYPE STRING,
VERSP TYPE STRING,
PROPR TYPE STRING,
MODAW TYPE STRING,
MODAV TYPE STRING,
KZPAR TYPE STRING,
OPGRA TYPE STRING,
KZINI TYPE STRING,
PRMOD TYPE STRING,
ALPHA TYPE STRING,
BETA1 TYPE STRING,
GAMMA TYPE STRING,
DELTA TYPE STRING,
EPSIL TYPE STRING,
SIGGR TYPE STRING,
PRDAT TYPE STRING,
PERAN TYPE STRING,
PERIN TYPE STRING,
PERIO TYPE STRING,
PEREX TYPE STRING,
ANZPR TYPE STRING,
FIMON TYPE STRING,
GWERT TYPE STRING,
GWER1 TYPE STRING,
GWER2 TYPE STRING,
VMGWE TYPE STRING,
VMGW1 TYPE STRING,
VMGW2 TYPE STRING,
TWERT TYPE STRING,
VMTWE TYPE STRING,
PRMAD TYPE STRING,
VMMAD TYPE STRING,
FSUMM TYPE STRING,
VMFSU TYPE STRING,
GEWGR TYPE STRING,
THKOF TYPE STRING,
AUSNA TYPE STRING,
PROAB TYPE STRING,
PERKZ TYPE STRING,
PNUM1 TYPE STRING,
HSNUM TYPE STRING,
PNUM2 TYPE STRING,
PERIV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDG_BS_MAT_S_MPOP_X_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_MDG_BS_MAT_S_MPOP_X_STR-MATNR sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-WERKS sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-DELETE_ROW sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-VERSP sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PROPR sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-MODAW sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-MODAV sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-KZPAR sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-OPGRA sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-KZINI sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PRMOD sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-ALPHA sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-BETA1 sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-GAMMA sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-DELTA sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-EPSIL sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-SIGGR sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PRDAT sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PERAN sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PERIN sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PERIO sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PEREX sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-ANZPR sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-FIMON sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-GWERT sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-GWER1 sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-GWER2 sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-VMGWE sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-VMGW1 sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-VMGW2 sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-TWERT sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-VMTWE sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PRMAD sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-VMMAD sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-FSUMM sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-VMFSU sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-GEWGR sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-THKOF sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-AUSNA sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PROAB sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PERKZ sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PNUM1 sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-HSNUM sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PNUM2 sy-vline 
WA_MDG_BS_MAT_S_MPOP_X_STR-PERIV sy-vline      INTO ld_text SEPARATED BY SPACE.

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