ABAP Select data from SAP table MDME_PRODUCT_CONS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDME_PRODUCT_CONS
*  INTO TABLE @DATA(IT_MDME_PRODUCT_CONS2).
*--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_MDME_PRODUCT_CONS INDEX 1 INTO DATA(WA_MDME_PRODUCT_CONS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDME_PRODUCT_CONS>-PRODUCT = 1.
<MDME_PRODUCT_CONS>-APO_PROD = 1.
<MDME_PRODUCT_CONS>-BBP_PROD = 1.
<MDME_PRODUCT_CONS>-CI_GRP_PRO = 1.
<MDME_PRODUCT_CONS>-CI_SPURCAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDME_PRODUCT_CONS-CI_SSALCAT, sy-vline,
  WA_MDME_PRODUCT_CONS-CRM_PROD, sy-vline,
  WA_MDME_PRODUCT_CONS-ECLASS_ID, sy-vline,
  WA_MDME_PRODUCT_CONS-GN_BWBEOTY, sy-vline,
  WA_MDME_PRODUCT_CONS-GN_CAT_PUR, sy-vline,
  WA_MDME_PRODUCT_CONS-GN_CAT_SAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDME_PRODUCT_CONS 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_MDME_PRODUCT_CONS 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_MDME_PRODUCT_CONS INTO WA_MDME_PRODUCT_CONS.


*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 CUNIT, internal->external for field BASE_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MDME_PRODUCT_CONS-BASE_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDME_PRODUCT_CONS-BASE_UOM.
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_MDME_PRODUCT_CONS_STR, 
PRODUCT TYPE STRING,
APO_PROD TYPE STRING,
BBP_PROD TYPE STRING,
CI_GRP_PRO TYPE STRING,
CI_SPURCAT TYPE STRING,
CI_SSALCAT TYPE STRING,
CRM_PROD TYPE STRING,
ECLASS_ID TYPE STRING,
GN_BWBEOTY TYPE STRING,
GN_CAT_PUR TYPE STRING,
GN_CAT_SAL TYPE STRING,
GN_PRO_IDX TYPE STRING,
GN_PRO_LID TYPE STRING,
GN_PRO_SSY TYPE STRING,
GN_SOURIO TYPE STRING,
MATERIAL TYPE STRING,
SERVICE TYPE STRING,
UNSPSC_ID TYPE STRING,
BASE_UOM TYPE STRING,
CRM_PRCONF TYPE STRING,
PROD_ID TYPE STRING,
PROD_OBJFA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDME_PRODUCT_CONS_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_MDME_PRODUCT_CONS_STR-PRODUCT sy-vline 
WA_MDME_PRODUCT_CONS_STR-APO_PROD sy-vline 
WA_MDME_PRODUCT_CONS_STR-BBP_PROD sy-vline 
WA_MDME_PRODUCT_CONS_STR-CI_GRP_PRO sy-vline 
WA_MDME_PRODUCT_CONS_STR-CI_SPURCAT sy-vline 
WA_MDME_PRODUCT_CONS_STR-CI_SSALCAT sy-vline 
WA_MDME_PRODUCT_CONS_STR-CRM_PROD sy-vline 
WA_MDME_PRODUCT_CONS_STR-ECLASS_ID sy-vline 
WA_MDME_PRODUCT_CONS_STR-GN_BWBEOTY sy-vline 
WA_MDME_PRODUCT_CONS_STR-GN_CAT_PUR sy-vline 
WA_MDME_PRODUCT_CONS_STR-GN_CAT_SAL sy-vline 
WA_MDME_PRODUCT_CONS_STR-GN_PRO_IDX sy-vline 
WA_MDME_PRODUCT_CONS_STR-GN_PRO_LID sy-vline 
WA_MDME_PRODUCT_CONS_STR-GN_PRO_SSY sy-vline 
WA_MDME_PRODUCT_CONS_STR-GN_SOURIO sy-vline 
WA_MDME_PRODUCT_CONS_STR-MATERIAL sy-vline 
WA_MDME_PRODUCT_CONS_STR-SERVICE sy-vline 
WA_MDME_PRODUCT_CONS_STR-UNSPSC_ID sy-vline 
WA_MDME_PRODUCT_CONS_STR-BASE_UOM sy-vline 
WA_MDME_PRODUCT_CONS_STR-CRM_PRCONF sy-vline 
WA_MDME_PRODUCT_CONS_STR-PROD_ID sy-vline 
WA_MDME_PRODUCT_CONS_STR-PROD_OBJFA sy-vline      INTO ld_text SEPARATED BY SPACE.

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