ABAP Select data from SAP table CM61D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CM61D 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 CM61D. 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 CM61D 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_CM61D TYPE STANDARD TABLE OF CM61D,
      WA_CM61D TYPE CM61D,
      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: <CM61D> TYPE CM61D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CM61D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CM61D
  INTO TABLE IT_CM61D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CM61D
*  INTO TABLE @DATA(IT_CM61D2).
*--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_CM61D INDEX 1 INTO DATA(WA_CM61D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CM61D ASSIGNING <CM61D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CM61D>-MATNR = 1.
<CM61D>-WERKS = 1.
<CM61D>-BERID = 1.
<CM61D>-DISST = 1.
<CM61D>-RESDT = 1.

ENDLOOP.

LOOP AT IT_CM61D INTO WA_CM61D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CM61D-RESAL, sy-vline,
  WA_CM61D-VMUPD, sy-vline,
  WA_CM61D-RHYTD, sy-vline,
  WA_CM61D-VRKZ1, sy-vline,
  WA_CM61D-VRKZ2, sy-vline,
  WA_CM61D-VRKZ3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CM61D 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_CM61D 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_CM61D INTO WA_CM61D.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CM61D-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CM61D-MATNR.
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_CM61D_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
BERID TYPE STRING,
DISST TYPE STRING,
RESDT TYPE STRING,
RESAL TYPE STRING,
VMUPD TYPE STRING,
RHYTD TYPE STRING,
VRKZ1 TYPE STRING,
VRKZ2 TYPE STRING,
VRKZ3 TYPE STRING,
SLKZ1 TYPE STRING,
SLKZ2 TYPE STRING,
SLKZ3 TYPE STRING,
SLKZ4 TYPE STRING,
SLKZ5 TYPE STRING,
SLKZ6 TYPE STRING,
SLKZ7 TYPE STRING,
SLKZ8 TYPE STRING,
RCODE TYPE STRING,
DISMM TYPE STRING,
MTART TYPE STRING,
NAUKZ TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
DISPO TYPE STRING,
NOMRP TYPE STRING,
PARMX TYPE STRING,
PARCT TYPE STRING,
NOLST TYPE STRING,
RTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CM61D_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_CM61D_STR-MATNR sy-vline 
WA_CM61D_STR-WERKS sy-vline 
WA_CM61D_STR-BERID sy-vline 
WA_CM61D_STR-DISST sy-vline 
WA_CM61D_STR-RESDT sy-vline 
WA_CM61D_STR-RESAL sy-vline 
WA_CM61D_STR-VMUPD sy-vline 
WA_CM61D_STR-RHYTD sy-vline 
WA_CM61D_STR-VRKZ1 sy-vline 
WA_CM61D_STR-VRKZ2 sy-vline 
WA_CM61D_STR-VRKZ3 sy-vline 
WA_CM61D_STR-SLKZ1 sy-vline 
WA_CM61D_STR-SLKZ2 sy-vline 
WA_CM61D_STR-SLKZ3 sy-vline 
WA_CM61D_STR-SLKZ4 sy-vline 
WA_CM61D_STR-SLKZ5 sy-vline 
WA_CM61D_STR-SLKZ6 sy-vline 
WA_CM61D_STR-SLKZ7 sy-vline 
WA_CM61D_STR-SLKZ8 sy-vline 
WA_CM61D_STR-RCODE sy-vline 
WA_CM61D_STR-DISMM sy-vline 
WA_CM61D_STR-MTART sy-vline 
WA_CM61D_STR-NAUKZ sy-vline 
WA_CM61D_STR-MSGID sy-vline 
WA_CM61D_STR-MSGNO sy-vline 
WA_CM61D_STR-MSGV1 sy-vline 
WA_CM61D_STR-MSGV2 sy-vline 
WA_CM61D_STR-MSGV3 sy-vline 
WA_CM61D_STR-MSGV4 sy-vline 
WA_CM61D_STR-DISPO sy-vline 
WA_CM61D_STR-NOMRP sy-vline 
WA_CM61D_STR-PARMX sy-vline 
WA_CM61D_STR-PARCT sy-vline 
WA_CM61D_STR-NOLST sy-vline 
WA_CM61D_STR-RTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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