ABAP Select data from SAP table MC02M_3SCL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MC02M_3SCL 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 MC02M_3SCL. 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 MC02M_3SCL 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_MC02M_3SCL TYPE STANDARD TABLE OF MC02M_3SCL,
      WA_MC02M_3SCL TYPE MC02M_3SCL,
      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: <MC02M_3SCL> TYPE MC02M_3SCL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MC02M_3SCL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MC02M_3SCL
  INTO TABLE IT_MC02M_3SCL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MC02M_3SCL
*  INTO TABLE @DATA(IT_MC02M_3SCL2).
*--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_MC02M_3SCL INDEX 1 INTO DATA(WA_MC02M_3SCL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MC02M_3SCL ASSIGNING <MC02M_3SCL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MC02M_3SCL>-BANFN = 1.
<MC02M_3SCL>-BNFPO = 1.
<MC02M_3SCL>-BWBRTWR = 1.
<MC02M_3SCL>-BWEFFWR = 1.
<MC02M_3SCL>-BWGEO = 1.

ENDLOOP.

LOOP AT IT_MC02M_3SCL INTO WA_MC02M_3SCL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MC02M_3SCL-BWGEOO, sy-vline,
  WA_MC02M_3SCL-BWGVO, sy-vline,
  WA_MC02M_3SCL-BWGVP, sy-vline,
  WA_MC02M_3SCL-BWKZWI1, sy-vline,
  WA_MC02M_3SCL-BWKZWI2, sy-vline,
  WA_MC02M_3SCL-BWKZWI3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MC02M_3SCL 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_MC02M_3SCL 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_MC02M_3SCL INTO WA_MC02M_3SCL.


*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 BANFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC02M_3SCL-BANFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC02M_3SCL-BANFN.
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_MC02M_3SCL_STR, 
BANFN TYPE STRING,
BNFPO TYPE STRING,
BWBRTWR TYPE STRING,
BWEFFWR TYPE STRING,
BWGEO TYPE STRING,
BWGEOO TYPE STRING,
BWGVO TYPE STRING,
BWGVP TYPE STRING,
BWKZWI1 TYPE STRING,
BWKZWI2 TYPE STRING,
BWKZWI3 TYPE STRING,
BWKZWI4 TYPE STRING,
BWKZWI5 TYPE STRING,
BWKZWI6 TYPE STRING,
BWMNG TYPE STRING,
BZGWR TYPE STRING,
CHARG TYPE STRING,
DBWGEO TYPE STRING,
DBWMNG TYPE STRING,
EINDT TYPE STRING,
ETENR TYPE STRING,
MAHNZ TYPE STRING,
SLFDT TYPE STRING,
UZEIT TYPE STRING,
KEY_ID TYPE STRING,
OTB_VALUE TYPE STRING,
OTB_CURR TYPE STRING,
OTB_RES_VALUE TYPE STRING,
OTB_SPEC_VALUE TYPE STRING,
SPR_RSN_PROFILE TYPE STRING,
BUDG_TYPE TYPE STRING,
OTB_STATUS TYPE STRING,
OTB_REASON TYPE STRING,
CHECK_TYPE TYPE STRING,
DL_ID TYPE STRING,
HANDOVER_DATE TYPE STRING,
NO_SCEM TYPE STRING,
DNG_DATE TYPE STRING,
DNG_TIME TYPE STRING,
CNCL_ANCMNT_DONE TYPE STRING,
DATESHIFT_NUMBER TYPE STRING,
ITEM_CAT TYPE STRING,
REC_TYPE TYPE STRING,
ATTYP TYPE STRING,
VLFKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MC02M_3SCL_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_MC02M_3SCL_STR-BANFN sy-vline 
WA_MC02M_3SCL_STR-BNFPO sy-vline 
WA_MC02M_3SCL_STR-BWBRTWR sy-vline 
WA_MC02M_3SCL_STR-BWEFFWR sy-vline 
WA_MC02M_3SCL_STR-BWGEO sy-vline 
WA_MC02M_3SCL_STR-BWGEOO sy-vline 
WA_MC02M_3SCL_STR-BWGVO sy-vline 
WA_MC02M_3SCL_STR-BWGVP sy-vline 
WA_MC02M_3SCL_STR-BWKZWI1 sy-vline 
WA_MC02M_3SCL_STR-BWKZWI2 sy-vline 
WA_MC02M_3SCL_STR-BWKZWI3 sy-vline 
WA_MC02M_3SCL_STR-BWKZWI4 sy-vline 
WA_MC02M_3SCL_STR-BWKZWI5 sy-vline 
WA_MC02M_3SCL_STR-BWKZWI6 sy-vline 
WA_MC02M_3SCL_STR-BWMNG sy-vline 
WA_MC02M_3SCL_STR-BZGWR sy-vline 
WA_MC02M_3SCL_STR-CHARG sy-vline 
WA_MC02M_3SCL_STR-DBWGEO sy-vline 
WA_MC02M_3SCL_STR-DBWMNG sy-vline 
WA_MC02M_3SCL_STR-EINDT sy-vline 
WA_MC02M_3SCL_STR-ETENR sy-vline 
WA_MC02M_3SCL_STR-MAHNZ sy-vline 
WA_MC02M_3SCL_STR-SLFDT sy-vline 
WA_MC02M_3SCL_STR-UZEIT sy-vline 
WA_MC02M_3SCL_STR-KEY_ID sy-vline 
WA_MC02M_3SCL_STR-OTB_VALUE sy-vline 
WA_MC02M_3SCL_STR-OTB_CURR sy-vline 
WA_MC02M_3SCL_STR-OTB_RES_VALUE sy-vline 
WA_MC02M_3SCL_STR-OTB_SPEC_VALUE sy-vline 
WA_MC02M_3SCL_STR-SPR_RSN_PROFILE sy-vline 
WA_MC02M_3SCL_STR-BUDG_TYPE sy-vline 
WA_MC02M_3SCL_STR-OTB_STATUS sy-vline 
WA_MC02M_3SCL_STR-OTB_REASON sy-vline 
WA_MC02M_3SCL_STR-CHECK_TYPE sy-vline 
WA_MC02M_3SCL_STR-DL_ID sy-vline 
WA_MC02M_3SCL_STR-HANDOVER_DATE sy-vline 
WA_MC02M_3SCL_STR-NO_SCEM sy-vline 
WA_MC02M_3SCL_STR-DNG_DATE sy-vline 
WA_MC02M_3SCL_STR-DNG_TIME sy-vline 
WA_MC02M_3SCL_STR-CNCL_ANCMNT_DONE sy-vline 
WA_MC02M_3SCL_STR-DATESHIFT_NUMBER sy-vline 
WA_MC02M_3SCL_STR-ITEM_CAT sy-vline 
WA_MC02M_3SCL_STR-REC_TYPE sy-vline 
WA_MC02M_3SCL_STR-ATTYP sy-vline 
WA_MC02M_3SCL_STR-VLFKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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