ABAP Select data from SAP table VMP_S_RESOLVE_DISCREP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VMP_S_RESOLVE_DISCREP
*  INTO TABLE @DATA(IT_VMP_S_RESOLVE_DISCREP2).
*--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_VMP_S_RESOLVE_DISCREP INDEX 1 INTO DATA(WA_VMP_S_RESOLVE_DISCREP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VMP_S_RESOLVE_DISCREP>-MARK = 1.
<VMP_S_RESOLVE_DISCREP>-TARGET_NODE_ID = 1.
<VMP_S_RESOLVE_DISCREP>-POSNR = 1.
<VMP_S_RESOLVE_DISCREP>-IDNRK = 1.
<VMP_S_RESOLVE_DISCREP>-KTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VMP_S_RESOLVE_DISCREP-IDNRK_DESCR, sy-vline,
  WA_VMP_S_RESOLVE_DISCREP-ATTRIBUTE_NAME, sy-vline,
  WA_VMP_S_RESOLVE_DISCREP-ATTR_DESCR, sy-vline,
  WA_VMP_S_RESOLVE_DISCREP-SOURCE_VALUE, sy-vline,
  WA_VMP_S_RESOLVE_DISCREP-TARGET_VALUE, sy-vline,
  WA_VMP_S_RESOLVE_DISCREP-TARGET_EDITED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VMP_S_RESOLVE_DISCREP 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_VMP_S_RESOLVE_DISCREP 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_VMP_S_RESOLVE_DISCREP INTO WA_VMP_S_RESOLVE_DISCREP.


*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 NUMCV, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_VMP_S_RESOLVE_DISCREP-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VMP_S_RESOLVE_DISCREP-POSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field IDNRK
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VMP_S_RESOLVE_DISCREP-IDNRK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VMP_S_RESOLVE_DISCREP-IDNRK.
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_VMP_S_RESOLVE_DISCREP_STR, 
MARK TYPE STRING,
TARGET_NODE_ID TYPE STRING,
POSNR TYPE STRING,
IDNRK TYPE STRING,
KTEXT TYPE STRING,
IDNRK_DESCR TYPE STRING,
ATTRIBUTE_NAME TYPE STRING,
ATTR_DESCR TYPE STRING,
SOURCE_VALUE TYPE STRING,
TARGET_VALUE TYPE STRING,
TARGET_EDITED TYPE STRING,
SOURCE_OLD_VAL TYPE STRING,
COPY_SOURCE TYPE STRING,
COPY_TARGET TYPE STRING,
DISABLE_TRG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VMP_S_RESOLVE_DISCREP_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_VMP_S_RESOLVE_DISCREP_STR-MARK sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-TARGET_NODE_ID sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-POSNR sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-IDNRK sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-KTEXT sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-IDNRK_DESCR sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-ATTRIBUTE_NAME sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-ATTR_DESCR sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-SOURCE_VALUE sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-TARGET_VALUE sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-TARGET_EDITED sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-SOURCE_OLD_VAL sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-COPY_SOURCE sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-COPY_TARGET sy-vline 
WA_VMP_S_RESOLVE_DISCREP_STR-DISABLE_TRG sy-vline      INTO ld_text SEPARATED BY SPACE.

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