ABAP Select data from SAP table TDS_RFC_IVSTAT_COMR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDS_RFC_IVSTAT_COMR
*  INTO TABLE @DATA(IT_TDS_RFC_IVSTAT_COMR2).
*--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_TDS_RFC_IVSTAT_COMR INDEX 1 INTO DATA(WA_TDS_RFC_IVSTAT_COMR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDS_RFC_IVSTAT_COMR>-HANDLE = 1.
<TDS_RFC_IVSTAT_COMR>-ABSTA_T = 1.
<TDS_RFC_IVSTAT_COMR>-BESTA_T = 1.
<TDS_RFC_IVSTAT_COMR>-COSTA_T = 1.
<TDS_RFC_IVSTAT_COMR>-DCSTA_T = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDS_RFC_IVSTAT_COMR-FKIVP_T, sy-vline,
  WA_TDS_RFC_IVSTAT_COMR-FKSAA_T, sy-vline,
  WA_TDS_RFC_IVSTAT_COMR-FKSTA_T, sy-vline,
  WA_TDS_RFC_IVSTAT_COMR-FSSTA_T, sy-vline,
  WA_TDS_RFC_IVSTAT_COMR-GBSTA_T, sy-vline,
  WA_TDS_RFC_IVSTAT_COMR-KOQUA_T, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDS_RFC_IVSTAT_COMR 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_TDS_RFC_IVSTAT_COMR 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_TDS_RFC_IVSTAT_COMR INTO WA_TDS_RFC_IVSTAT_COMR.


*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_TDS_RFC_IVSTAT_COMR_STR, 
HANDLE TYPE STRING,
ABSTA_T TYPE STRING,
BESTA_T TYPE STRING,
COSTA_T TYPE STRING,
DCSTA_T TYPE STRING,
FKIVP_T TYPE STRING,
FKSAA_T TYPE STRING,
FKSTA_T TYPE STRING,
FSSTA_T TYPE STRING,
GBSTA_T TYPE STRING,
KOQUA_T TYPE STRING,
KOSTA_T TYPE STRING,
LFGSA_T TYPE STRING,
LFSTA_T TYPE STRING,
LSSTA_T TYPE STRING,
LVSTA_T TYPE STRING,
PKSTA_T TYPE STRING,
RFGSA_T TYPE STRING,
RFSTA_T TYPE STRING,
UVALL_T TYPE STRING,
UVFAK_T TYPE STRING,
UVVLK_T TYPE STRING,
WBSTA_T TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDS_RFC_IVSTAT_COMR_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_TDS_RFC_IVSTAT_COMR_STR-HANDLE sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-ABSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-BESTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-COSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-DCSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-FKIVP_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-FKSAA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-FKSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-FSSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-GBSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-KOQUA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-KOSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-LFGSA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-LFSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-LSSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-LVSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-PKSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-RFGSA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-RFSTA_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-UVALL_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-UVFAK_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-UVVLK_T sy-vline 
WA_TDS_RFC_IVSTAT_COMR_STR-WBSTA_T sy-vline      INTO ld_text SEPARATED BY SPACE.

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