ABAP Select data from SAP table MC13VD1ITM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MC13VD1ITM 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 MC13VD1ITM. 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 MC13VD1ITM 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_MC13VD1ITM TYPE STANDARD TABLE OF MC13VD1ITM,
      WA_MC13VD1ITM TYPE MC13VD1ITM,
      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: <MC13VD1ITM> TYPE MC13VD1ITM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MC13VD1ITM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MC13VD1ITM
  INTO TABLE IT_MC13VD1ITM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MC13VD1ITM
*  INTO TABLE @DATA(IT_MC13VD1ITM2).
*--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_MC13VD1ITM INDEX 1 INTO DATA(WA_MC13VD1ITM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MC13VD1ITM ASSIGNING <MC13VD1ITM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MC13VD1ITM>-AEDAT = 1.
<MC13VD1ITM>-BUKRS = 1.
<MC13VD1ITM>-BZIRK = 1.
<MC13VD1ITM>-FKART = 1.
<MC13VD1ITM>-FKDAT = 1.

ENDLOOP.

LOOP AT IT_MC13VD1ITM INTO WA_MC13VD1ITM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MC13VD1ITM-FKTYP, sy-vline,
  WA_MC13VD1ITM-HWAER, sy-vline,
  WA_MC13VD1ITM-KDGRP, sy-vline,
  WA_MC13VD1ITM-KUNAG, sy-vline,
  WA_MC13VD1ITM-KUNRG, sy-vline,
  WA_MC13VD1ITM-KURRF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MC13VD1ITM 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_MC13VD1ITM 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_MC13VD1ITM INTO WA_MC13VD1ITM.


*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 KUNAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC13VD1ITM-KUNAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC13VD1ITM-KUNAG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNRG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC13VD1ITM-KUNRG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC13VD1ITM-KUNRG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURRF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_MC13VD1ITM-KURRF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC13VD1ITM-KURRF.
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_MC13VD1ITM_STR, 
AEDAT TYPE STRING,
BUKRS TYPE STRING,
BZIRK TYPE STRING,
FKART TYPE STRING,
FKDAT TYPE STRING,
FKTYP TYPE STRING,
HWAER TYPE STRING,
KDGRP TYPE STRING,
KUNAG TYPE STRING,
KUNRG TYPE STRING,
KURRF TYPE STRING,
KURST TYPE STRING,
STWAE TYPE STRING,
VBTYP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
WAERK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MC13VD1ITM_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_MC13VD1ITM_STR-AEDAT sy-vline 
WA_MC13VD1ITM_STR-BUKRS sy-vline 
WA_MC13VD1ITM_STR-BZIRK sy-vline 
WA_MC13VD1ITM_STR-FKART sy-vline 
WA_MC13VD1ITM_STR-FKDAT sy-vline 
WA_MC13VD1ITM_STR-FKTYP sy-vline 
WA_MC13VD1ITM_STR-HWAER sy-vline 
WA_MC13VD1ITM_STR-KDGRP sy-vline 
WA_MC13VD1ITM_STR-KUNAG sy-vline 
WA_MC13VD1ITM_STR-KUNRG sy-vline 
WA_MC13VD1ITM_STR-KURRF sy-vline 
WA_MC13VD1ITM_STR-KURST sy-vline 
WA_MC13VD1ITM_STR-STWAE sy-vline 
WA_MC13VD1ITM_STR-VBTYP sy-vline 
WA_MC13VD1ITM_STR-VKORG sy-vline 
WA_MC13VD1ITM_STR-VTWEG sy-vline 
WA_MC13VD1ITM_STR-WAERK sy-vline      INTO ld_text SEPARATED BY SPACE.

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