ABAP Select data from SAP table CMM_MTM_COMPARE_VALUES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMM_MTM_COMPARE_VALUES
*  INTO TABLE @DATA(IT_CMM_MTM_COMPARE_VALUES2).
*--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_CMM_MTM_COMPARE_VALUES INDEX 1 INTO DATA(WA_CMM_MTM_COMPARE_VALUES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMM_MTM_COMPARE_VALUES>-SOURCEDOCUMENT = 1.
<CMM_MTM_COMPARE_VALUES>-PRICINGKEY = 1.
<CMM_MTM_COMPARE_VALUES>-VERSION = 1.
<CMM_MTM_COMPARE_VALUES>-PRICINGDOCUMENTITEM = 1.
<CMM_MTM_COMPARE_VALUES>-CONDITIONTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMM_MTM_COMPARE_VALUES-SUBCONDITIONTYPE, sy-vline,
  WA_CMM_MTM_COMPARE_VALUES-VERSSTOCKRECORDUUID, sy-vline,
  WA_CMM_MTM_COMPARE_VALUES-VALUATIONDATE, sy-vline,
  WA_CMM_MTM_COMPARE_VALUES-FXVALUATIONDATE, sy-vline,
  WA_CMM_MTM_COMPARE_VALUES-FXVALUATIONDATEDOCTOSTSTC, sy-vline,
  WA_CMM_MTM_COMPARE_VALUES-SCENARIO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMM_MTM_COMPARE_VALUES 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_CMM_MTM_COMPARE_VALUES 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_CMM_MTM_COMPARE_VALUES INTO WA_CMM_MTM_COMPARE_VALUES.


*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 SOURCEDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMM_MTM_COMPARE_VALUES-SOURCEDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMM_MTM_COMPARE_VALUES-SOURCEDOCUMENT.
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_CMM_MTM_COMPARE_VALUES_STR, 
SOURCEDOCUMENT TYPE STRING,
PRICINGKEY TYPE STRING,
VERSION TYPE STRING,
PRICINGDOCUMENTITEM TYPE STRING,
CONDITIONTYPE TYPE STRING,
SUBCONDITIONTYPE TYPE STRING,
VERSSTOCKRECORDUUID TYPE STRING,
VALUATIONDATE TYPE STRING,
FXVALUATIONDATE TYPE STRING,
FXVALUATIONDATEDOCTOSTSTC TYPE STRING,
SCENARIO TYPE STRING,
FIELDNAME TYPE STRING,
OLD_VALUE TYPE STRING,
NEW_VALUE TYPE STRING,
MESSAGE_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMM_MTM_COMPARE_VALUES_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_CMM_MTM_COMPARE_VALUES_STR-SOURCEDOCUMENT sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-PRICINGKEY sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-VERSION sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-PRICINGDOCUMENTITEM sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-CONDITIONTYPE sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-SUBCONDITIONTYPE sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-VERSSTOCKRECORDUUID sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-VALUATIONDATE sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-FXVALUATIONDATE sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-FXVALUATIONDATEDOCTOSTSTC sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-SCENARIO sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-FIELDNAME sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-OLD_VALUE sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-NEW_VALUE sy-vline 
WA_CMM_MTM_COMPARE_VALUES_STR-MESSAGE_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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