ABAP Select data from SAP table MC06M_2HD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MC06M_2HD 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 MC06M_2HD. 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 MC06M_2HD 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_MC06M_2HD TYPE STANDARD TABLE OF MC06M_2HD,
      WA_MC06M_2HD TYPE MC06M_2HD,
      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: <MC06M_2HD> TYPE MC06M_2HD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MC06M_2HD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MC06M_2HD
  INTO TABLE IT_MC06M_2HD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MC06M_2HD
*  INTO TABLE @DATA(IT_MC06M_2HD2).
*--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_MC06M_2HD INDEX 1 INTO DATA(WA_MC06M_2HD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MC06M_2HD ASSIGNING <MC06M_2HD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MC06M_2HD>-ARKUEMW = 1.
<MC06M_2HD>-ARKUEN = 1.
<MC06M_2HD>-BEZNK = 1.
<MC06M_2HD>-BKTXT = 1.
<MC06M_2HD>-BLDAT = 1.

ENDLOOP.

LOOP AT IT_MC06M_2HD INTO WA_MC06M_2HD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MC06M_2HD-BUDAT, sy-vline,
  WA_MC06M_2HD-BUKRS, sy-vline,
  WA_MC06M_2HD-DIFFMW, sy-vline,
  WA_MC06M_2HD-DIFFN, sy-vline,
  WA_MC06M_2HD-IVTYP, sy-vline,
  WA_MC06M_2HD-LIEFFMW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MC06M_2HD 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_MC06M_2HD 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_MC06M_2HD INTO WA_MC06M_2HD.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC06M_2HD-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC06M_2HD-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC06M_2HD-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC06M_2HD-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STBLG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC06M_2HD-STBLG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC06M_2HD-STBLG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field STJAH
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MC06M_2HD-STJAH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC06M_2HD-STJAH.
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_MC06M_2HD_STR, 
ARKUEMW TYPE STRING,
ARKUEN TYPE STRING,
BEZNK TYPE STRING,
BKTXT TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
BUKRS TYPE STRING,
DIFFMW TYPE STRING,
DIFFN TYPE STRING,
IVTYP TYPE STRING,
LIEFFMW TYPE STRING,
LIEFFN TYPE STRING,
LIFNR TYPE STRING,
LOGSYS TYPE STRING,
MAKZMW TYPE STRING,
MAKZN TYPE STRING,
MRM_ZLSPR TYPE STRING,
MWSKZ_BNK TYPE STRING,
RBSTAT TYPE STRING,
RMWWR TYPE STRING,
STBLG TYPE STRING,
STJAH TYPE STRING,
WAERS TYPE STRING,
WMWST1 TYPE STRING,
XBLNR TYPE STRING,
XRECH TYPE STRING,
ZLSPR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MC06M_2HD_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_MC06M_2HD_STR-ARKUEMW sy-vline 
WA_MC06M_2HD_STR-ARKUEN sy-vline 
WA_MC06M_2HD_STR-BEZNK sy-vline 
WA_MC06M_2HD_STR-BKTXT sy-vline 
WA_MC06M_2HD_STR-BLDAT sy-vline 
WA_MC06M_2HD_STR-BUDAT sy-vline 
WA_MC06M_2HD_STR-BUKRS sy-vline 
WA_MC06M_2HD_STR-DIFFMW sy-vline 
WA_MC06M_2HD_STR-DIFFN sy-vline 
WA_MC06M_2HD_STR-IVTYP sy-vline 
WA_MC06M_2HD_STR-LIEFFMW sy-vline 
WA_MC06M_2HD_STR-LIEFFN sy-vline 
WA_MC06M_2HD_STR-LIFNR sy-vline 
WA_MC06M_2HD_STR-LOGSYS sy-vline 
WA_MC06M_2HD_STR-MAKZMW sy-vline 
WA_MC06M_2HD_STR-MAKZN sy-vline 
WA_MC06M_2HD_STR-MRM_ZLSPR sy-vline 
WA_MC06M_2HD_STR-MWSKZ_BNK sy-vline 
WA_MC06M_2HD_STR-RBSTAT sy-vline 
WA_MC06M_2HD_STR-RMWWR sy-vline 
WA_MC06M_2HD_STR-STBLG sy-vline 
WA_MC06M_2HD_STR-STJAH sy-vline 
WA_MC06M_2HD_STR-WAERS sy-vline 
WA_MC06M_2HD_STR-WMWST1 sy-vline 
WA_MC06M_2HD_STR-XBLNR sy-vline 
WA_MC06M_2HD_STR-XRECH sy-vline 
WA_MC06M_2HD_STR-ZLSPR sy-vline      INTO ld_text SEPARATED BY SPACE.

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