ABAP Select data from SAP table MC40RP0REV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MC40RP0REV 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 MC40RP0REV. 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 MC40RP0REV 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_MC40RP0REV TYPE STANDARD TABLE OF MC40RP0REV,
      WA_MC40RP0REV TYPE MC40RP0REV,
      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: <MC40RP0REV> TYPE MC40RP0REV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MC40RP0REV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MC40RP0REV
  INTO TABLE IT_MC40RP0REV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MC40RP0REV
*  INTO TABLE @DATA(IT_MC40RP0REV2).
*--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_MC40RP0REV INDEX 1 INTO DATA(WA_MC40RP0REV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MC40RP0REV ASSIGNING <MC40RP0REV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MC40RP0REV>-ROCANCEL = 1.
<MC40RP0REV>-AKTNR = 1.
<MC40RP0REV>-BWAPPLNM = 1.
<MC40RP0REV>-BWBREL = 1.
<MC40RP0REV>-BWGEO = 1.

ENDLOOP.

LOOP AT IT_MC40RP0REV INTO WA_MC40RP0REV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MC40RP0REV-BWGVO, sy-vline,
  WA_MC40RP0REV-BWGVP, sy-vline,
  WA_MC40RP0REV-BWMNG, sy-vline,
  WA_MC40RP0REV-BWMVE, sy-vline,
  WA_MC40RP0REV-BWVORG, sy-vline,
  WA_MC40RP0REV-HWAER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MC40RP0REV 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_MC40RP0REV 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_MC40RP0REV INTO WA_MC40RP0REV.


*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 AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC40RP0REV-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC40RP0REV-AKTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MC40RP0REV-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC40RP0REV-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC40RP0REV-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC40RP0REV-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PV_GRUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC40RP0REV-PV_GRUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC40RP0REV-PV_GRUND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field UBJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MC40RP0REV-UBJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC40RP0REV-UBJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC40RP0REV-UBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC40RP0REV-UBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC40RP0REV-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC40RP0REV-VRKME.
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_MC40RP0REV_STR, 
ROCANCEL TYPE STRING,
AKTNR TYPE STRING,
BWAPPLNM TYPE STRING,
BWBREL TYPE STRING,
BWGEO TYPE STRING,
BWGVO TYPE STRING,
BWGVP TYPE STRING,
BWMNG TYPE STRING,
BWMVE TYPE STRING,
BWVORG TYPE STRING,
HWAER TYPE STRING,
MATNR TYPE STRING,
MEINS TYPE STRING,
PV_GRUND TYPE STRING,
SHKZG TYPE STRING,
SPANN TYPE STRING,
UBJAHR TYPE STRING,
UBLNR TYPE STRING,
UMVKN TYPE STRING,
UMVKZ TYPE STRING,
UZEIL TYPE STRING,
VPDAT TYPE STRING,
VRKME TYPE STRING,
WERKS TYPE STRING,
UPSTA TYPE STRING,
UAKT TYPE STRING,
AFFECT_COST_VAL TYPE STRING,
NOPOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MC40RP0REV_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_MC40RP0REV_STR-ROCANCEL sy-vline 
WA_MC40RP0REV_STR-AKTNR sy-vline 
WA_MC40RP0REV_STR-BWAPPLNM sy-vline 
WA_MC40RP0REV_STR-BWBREL sy-vline 
WA_MC40RP0REV_STR-BWGEO sy-vline 
WA_MC40RP0REV_STR-BWGVO sy-vline 
WA_MC40RP0REV_STR-BWGVP sy-vline 
WA_MC40RP0REV_STR-BWMNG sy-vline 
WA_MC40RP0REV_STR-BWMVE sy-vline 
WA_MC40RP0REV_STR-BWVORG sy-vline 
WA_MC40RP0REV_STR-HWAER sy-vline 
WA_MC40RP0REV_STR-MATNR sy-vline 
WA_MC40RP0REV_STR-MEINS sy-vline 
WA_MC40RP0REV_STR-PV_GRUND sy-vline 
WA_MC40RP0REV_STR-SHKZG sy-vline 
WA_MC40RP0REV_STR-SPANN sy-vline 
WA_MC40RP0REV_STR-UBJAHR sy-vline 
WA_MC40RP0REV_STR-UBLNR sy-vline 
WA_MC40RP0REV_STR-UMVKN sy-vline 
WA_MC40RP0REV_STR-UMVKZ sy-vline 
WA_MC40RP0REV_STR-UZEIL sy-vline 
WA_MC40RP0REV_STR-VPDAT sy-vline 
WA_MC40RP0REV_STR-VRKME sy-vline 
WA_MC40RP0REV_STR-WERKS sy-vline 
WA_MC40RP0REV_STR-UPSTA sy-vline 
WA_MC40RP0REV_STR-UAKT sy-vline 
WA_MC40RP0REV_STR-AFFECT_COST_VAL sy-vline 
WA_MC40RP0REV_STR-NOPOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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