ABAP Select data from SAP table COMT_PR_ORG_REL_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COMT_PR_ORG_REL_DATA
*  INTO TABLE @DATA(IT_COMT_PR_ORG_REL_DATA2).
*--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_COMT_PR_ORG_REL_DATA INDEX 1 INTO DATA(WA_COMT_PR_ORG_REL_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COMT_PR_ORG_REL_DATA>-LINK_TABLE = 1.
<COMT_PR_ORG_REL_DATA>-LINK_TABLE_HIST = 1.
<COMT_PR_ORG_REL_DATA>-LINK_TABLE_STRUC = 1.
<COMT_PR_ORG_REL_DATA>-LINK_TABLE_TTYP = 1.
<COMT_PR_ORG_REL_DATA>-FUNC_MAINTAIN_CH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COMT_PR_ORG_REL_DATA-FUNC_READ_CH_SET, sy-vline,
  WA_COMT_PR_ORG_REL_DATA-FUNC_REFRESH_LOC, sy-vline,
  WA_COMT_PR_ORG_REL_DATA-FUNC_REL_CHANGE, sy-vline,
  WA_COMT_PR_ORG_REL_DATA-FUNC_REL_CHANGEM, sy-vline,
  WA_COMT_PR_ORG_REL_DATA-FUNC_REL_DELETE, sy-vline,
  WA_COMT_PR_ORG_REL_DATA-FUNC_REL_DELETEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COMT_PR_ORG_REL_DATA 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_COMT_PR_ORG_REL_DATA 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_COMT_PR_ORG_REL_DATA INTO WA_COMT_PR_ORG_REL_DATA.


*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_COMT_PR_ORG_REL_DATA_STR, 
LINK_TABLE TYPE STRING,
LINK_TABLE_HIST TYPE STRING,
LINK_TABLE_STRUC TYPE STRING,
LINK_TABLE_TTYP TYPE STRING,
FUNC_MAINTAIN_CH TYPE STRING,
FUNC_READ_CH_SET TYPE STRING,
FUNC_REFRESH_LOC TYPE STRING,
FUNC_REL_CHANGE TYPE STRING,
FUNC_REL_CHANGEM TYPE STRING,
FUNC_REL_DELETE TYPE STRING,
FUNC_REL_DELETEM TYPE STRING,
FUNC_REL_CHECK TYPE STRING,
FUNC_REL_CREATE TYPE STRING,
FUNC_REL_CREATEM TYPE STRING,
FUNC_REL_READ TYPE STRING,
FUNC_REL_READM TYPE STRING,
FUNC_REL_READ_MU TYPE STRING,
FUNC_REL_READ_PM TYPE STRING,
FUNC_REL_READ_PR TYPE STRING,
FUNC_REL_READ_SE TYPE STRING,
FUNC_REL_AR_COLL TYPE STRING,
FUNC_REL_AR_PROC TYPE STRING,
FUNC_REL_BUF_FIL TYPE STRING,
FUNC_REL_REFRESH TYPE STRING,
FUNC_MAP_TO_ORG TYPE STRING,
FUNC_MAP_ORG TYPE STRING,
FUNC_SAVE_REL TYPE STRING,
FUNC_SAVE_DB_REL TYPE STRING,
FUNC_CHECK_SET_E TYPE STRING,
LINK_TABLEH_TTYP TYPE STRING,
FUNC_RELH_READ_P TYPE STRING,
LINK_SEL_STRUC TYPE STRING,
LINK_SEL_TTYP TYPE STRING,
LINK_KEY_STRUC TYPE STRING,
LINK_KEY_TTYP TYPE STRING,
LINK_KEYH_STRUC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COMT_PR_ORG_REL_DATA_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_COMT_PR_ORG_REL_DATA_STR-LINK_TABLE sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-LINK_TABLE_HIST sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-LINK_TABLE_STRUC sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-LINK_TABLE_TTYP sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_MAINTAIN_CH sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_READ_CH_SET sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REFRESH_LOC sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_CHANGE sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_CHANGEM sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_DELETE sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_DELETEM sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_CHECK sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_CREATE sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_CREATEM sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_READ sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_READM sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_READ_MU sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_READ_PM sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_READ_PR sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_READ_SE sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_AR_COLL sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_AR_PROC sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_BUF_FIL sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_REL_REFRESH sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_MAP_TO_ORG sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_MAP_ORG sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_SAVE_REL sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_SAVE_DB_REL sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_CHECK_SET_E sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-LINK_TABLEH_TTYP sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-FUNC_RELH_READ_P sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-LINK_SEL_STRUC sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-LINK_SEL_TTYP sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-LINK_KEY_STRUC sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-LINK_KEY_TTYP sy-vline 
WA_COMT_PR_ORG_REL_DATA_STR-LINK_KEYH_STRUC sy-vline      INTO ld_text SEPARATED BY SPACE.

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