ABAP Select data from SAP table CMMTD_HA_DESACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMMTD_HA_DESACT
*  INTO TABLE @DATA(IT_CMMTD_HA_DESACT2).
*--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_CMMTD_HA_DESACT INDEX 1 INTO DATA(WA_CMMTD_HA_DESACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMMTD_HA_DESACT>-MANDT = 1.
<CMMTD_HA_DESACT>-HDGGARDSGNTNACTIVATIONUUID = 1.
<CMMTD_HA_DESACT>-HEDGINGAREAPARENTOBJECTUUID = 1.
<CMMTD_HA_DESACT>-HEDGINGAREAIDENTIFICATION = 1.
<CMMTD_HA_DESACT>-HEDGINGAREAVALIDFROMDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMMTD_HA_DESACT-HEDGINGAREAAUTHORIZATIONGROUP, sy-vline,
  WA_CMMTD_HA_DESACT-HEDGINGAREACOMPANYCODE, sy-vline,
  WA_CMMTD_HA_DESACT-HEDGINGAREACOMMODITY, sy-vline,
  WA_CMMTD_HA_DESACT-HDGGARLOCLLASTCHGDATDATETIME, sy-vline,
  WA_CMMTD_HA_DESACT-DRAFTENTITYCREATIONDATETIME, sy-vline,
  WA_CMMTD_HA_DESACT-DRAFTENTITYLASTCHANGEDATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMMTD_HA_DESACT 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_CMMTD_HA_DESACT 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_CMMTD_HA_DESACT INTO WA_CMMTD_HA_DESACT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CMMTD_HA_DESACT_STR, 
MANDT TYPE STRING,
HDGGARDSGNTNACTIVATIONUUID TYPE STRING,
HEDGINGAREAPARENTOBJECTUUID TYPE STRING,
HEDGINGAREAIDENTIFICATION TYPE STRING,
HEDGINGAREAVALIDFROMDATE TYPE STRING,
HEDGINGAREAAUTHORIZATIONGROUP TYPE STRING,
HEDGINGAREACOMPANYCODE TYPE STRING,
HEDGINGAREACOMMODITY TYPE STRING,
HDGGARLOCLLASTCHGDATDATETIME TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTFIELDCHANGES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMMTD_HA_DESACT_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_CMMTD_HA_DESACT_STR-MANDT sy-vline 
WA_CMMTD_HA_DESACT_STR-HDGGARDSGNTNACTIVATIONUUID sy-vline 
WA_CMMTD_HA_DESACT_STR-HEDGINGAREAPARENTOBJECTUUID sy-vline 
WA_CMMTD_HA_DESACT_STR-HEDGINGAREAIDENTIFICATION sy-vline 
WA_CMMTD_HA_DESACT_STR-HEDGINGAREAVALIDFROMDATE sy-vline 
WA_CMMTD_HA_DESACT_STR-HEDGINGAREAAUTHORIZATIONGROUP sy-vline 
WA_CMMTD_HA_DESACT_STR-HEDGINGAREACOMPANYCODE sy-vline 
WA_CMMTD_HA_DESACT_STR-HEDGINGAREACOMMODITY sy-vline 
WA_CMMTD_HA_DESACT_STR-HDGGARLOCLLASTCHGDATDATETIME sy-vline 
WA_CMMTD_HA_DESACT_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_CMMTD_HA_DESACT_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_CMMTD_HA_DESACT_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_CMMTD_HA_DESACT_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_CMMTD_HA_DESACT_STR-HASACTIVEENTITY sy-vline 
WA_CMMTD_HA_DESACT_STR-DRAFTFIELDCHANGES sy-vline      INTO ld_text SEPARATED BY SPACE.

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