ABAP Select data from SAP table CNVTDMSBW_SELGRP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVTDMSBW_SELGRP
*  INTO TABLE @DATA(IT_CNVTDMSBW_SELGRP2).
*--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_CNVTDMSBW_SELGRP INDEX 1 INTO DATA(WA_CNVTDMSBW_SELGRP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVTDMSBW_SELGRP>-CLIENT = 1.
<CNVTDMSBW_SELGRP>-PACKID = 1.
<CNVTDMSBW_SELGRP>-OBJ_NAME = 1.
<CNVTDMSBW_SELGRP>-OBJ_TYPE = 1.
<CNVTDMSBW_SELGRP>-CONVOBJECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVTDMSBW_SELGRP-SEQUENCE_NO, sy-vline,
  WA_CNVTDMSBW_SELGRP-GROUP_ID, sy-vline,
  WA_CNVTDMSBW_SELGRP-SEL, sy-vline,
  WA_CNVTDMSBW_SELGRP-RANK, sy-vline,
  WA_CNVTDMSBW_SELGRP-FIELDNAME1, sy-vline,
  WA_CNVTDMSBW_SELGRP-FIELDNAME2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNVTDMSBW_SELGRP 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_CNVTDMSBW_SELGRP 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_CNVTDMSBW_SELGRP INTO WA_CNVTDMSBW_SELGRP.


*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_CNVTDMSBW_SELGRP_STR, 
CLIENT TYPE STRING,
PACKID TYPE STRING,
OBJ_NAME TYPE STRING,
OBJ_TYPE TYPE STRING,
CONVOBJECT TYPE STRING,
SEQUENCE_NO TYPE STRING,
GROUP_ID TYPE STRING,
SEL TYPE STRING,
RANK TYPE STRING,
FIELDNAME1 TYPE STRING,
FIELDNAME2 TYPE STRING,
FIELDNAME3 TYPE STRING,
FIELDNAME4 TYPE STRING,
FIELDNAME5 TYPE STRING,
FIELDNAME6 TYPE STRING,
TIMNM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVTDMSBW_SELGRP_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_CNVTDMSBW_SELGRP_STR-CLIENT sy-vline 
WA_CNVTDMSBW_SELGRP_STR-PACKID sy-vline 
WA_CNVTDMSBW_SELGRP_STR-OBJ_NAME sy-vline 
WA_CNVTDMSBW_SELGRP_STR-OBJ_TYPE sy-vline 
WA_CNVTDMSBW_SELGRP_STR-CONVOBJECT sy-vline 
WA_CNVTDMSBW_SELGRP_STR-SEQUENCE_NO sy-vline 
WA_CNVTDMSBW_SELGRP_STR-GROUP_ID sy-vline 
WA_CNVTDMSBW_SELGRP_STR-SEL sy-vline 
WA_CNVTDMSBW_SELGRP_STR-RANK sy-vline 
WA_CNVTDMSBW_SELGRP_STR-FIELDNAME1 sy-vline 
WA_CNVTDMSBW_SELGRP_STR-FIELDNAME2 sy-vline 
WA_CNVTDMSBW_SELGRP_STR-FIELDNAME3 sy-vline 
WA_CNVTDMSBW_SELGRP_STR-FIELDNAME4 sy-vline 
WA_CNVTDMSBW_SELGRP_STR-FIELDNAME5 sy-vline 
WA_CNVTDMSBW_SELGRP_STR-FIELDNAME6 sy-vline 
WA_CNVTDMSBW_SELGRP_STR-TIMNM sy-vline      INTO ld_text SEPARATED BY SPACE.

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