ABAP Select data from SAP table CNVLTHCM_INDXTRN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVLTHCM_INDXTRN
*  INTO TABLE @DATA(IT_CNVLTHCM_INDXTRN2).
*--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_CNVLTHCM_INDXTRN INDEX 1 INTO DATA(WA_CNVLTHCM_INDXTRN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVLTHCM_INDXTRN>-MANDT = 1.
<CNVLTHCM_INDXTRN>-PACKID = 1.
<CNVLTHCM_INDXTRN>-CLUSTER_NAME = 1.
<CNVLTHCM_INDXTRN>-RELID = 1.
<CNVLTHCM_INDXTRN>-TRANSFER_IND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVLTHCM_INDXTRN-HROBJID_IND, sy-vline,
  WA_CNVLTHCM_INDXTRN-NO_DATA, sy-vline,
  WA_CNVLTHCM_INDXTRN-CREATED, sy-vline,
  WA_CNVLTHCM_INDXTRN-CRDATE, sy-vline,
  WA_CNVLTHCM_INDXTRN-CRTIME, sy-vline,
  WA_CNVLTHCM_INDXTRN-CRUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNVLTHCM_INDXTRN 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_CNVLTHCM_INDXTRN 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_CNVLTHCM_INDXTRN INTO WA_CNVLTHCM_INDXTRN.


*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_CNVLTHCM_INDXTRN_STR, 
MANDT TYPE STRING,
PACKID TYPE STRING,
CLUSTER_NAME TYPE STRING,
RELID TYPE STRING,
TRANSFER_IND TYPE STRING,
HROBJID_IND TYPE STRING,
NO_DATA TYPE STRING,
CREATED TYPE STRING,
CRDATE TYPE STRING,
CRTIME TYPE STRING,
CRUSER TYPE STRING,
CHANGED TYPE STRING,
CHDATE TYPE STRING,
CHTIME TYPE STRING,
CHUSER TYPE STRING,
SOURCE TYPE STRING,
NO_EXIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVLTHCM_INDXTRN_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_CNVLTHCM_INDXTRN_STR-MANDT sy-vline 
WA_CNVLTHCM_INDXTRN_STR-PACKID sy-vline 
WA_CNVLTHCM_INDXTRN_STR-CLUSTER_NAME sy-vline 
WA_CNVLTHCM_INDXTRN_STR-RELID sy-vline 
WA_CNVLTHCM_INDXTRN_STR-TRANSFER_IND sy-vline 
WA_CNVLTHCM_INDXTRN_STR-HROBJID_IND sy-vline 
WA_CNVLTHCM_INDXTRN_STR-NO_DATA sy-vline 
WA_CNVLTHCM_INDXTRN_STR-CREATED sy-vline 
WA_CNVLTHCM_INDXTRN_STR-CRDATE sy-vline 
WA_CNVLTHCM_INDXTRN_STR-CRTIME sy-vline 
WA_CNVLTHCM_INDXTRN_STR-CRUSER sy-vline 
WA_CNVLTHCM_INDXTRN_STR-CHANGED sy-vline 
WA_CNVLTHCM_INDXTRN_STR-CHDATE sy-vline 
WA_CNVLTHCM_INDXTRN_STR-CHTIME sy-vline 
WA_CNVLTHCM_INDXTRN_STR-CHUSER sy-vline 
WA_CNVLTHCM_INDXTRN_STR-SOURCE sy-vline 
WA_CNVLTHCM_INDXTRN_STR-NO_EXIST sy-vline      INTO ld_text SEPARATED BY SPACE.

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