ABAP Select data from SAP table IDGT_S_HEADER2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IDGT_S_HEADER2 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 IDGT_S_HEADER2. 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 IDGT_S_HEADER2 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_IDGT_S_HEADER2 TYPE STANDARD TABLE OF IDGT_S_HEADER2,
      WA_IDGT_S_HEADER2 TYPE IDGT_S_HEADER2,
      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: <IDGT_S_HEADER2> TYPE IDGT_S_HEADER2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IDGT_S_HEADER2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IDGT_S_HEADER2
  INTO TABLE IT_IDGT_S_HEADER2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDGT_S_HEADER2
*  INTO TABLE @DATA(IT_IDGT_S_HEADER22).
*--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_IDGT_S_HEADER2 INDEX 1 INTO DATA(WA_IDGT_S_HEADER22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IDGT_S_HEADER2 ASSIGNING <IDGT_S_HEADER2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDGT_S_HEADER2>-REFVBELN = 1.
<IDGT_S_HEADER2>-COMBINEID = 1.
<IDGT_S_HEADER2>-GTSTATUS = 1.
<IDGT_S_HEADER2>-TLINES = 1.
<IDGT_S_HEADER2>-SENTDATE = 1.

ENDLOOP.

LOOP AT IT_IDGT_S_HEADER2 INTO WA_IDGT_S_HEADER2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDGT_S_HEADER2-FILETYPE, sy-vline,
  WA_IDGT_S_HEADER2-NOTE, sy-vline,
  WA_IDGT_S_HEADER2-KUNNR, sy-vline,
  WA_IDGT_S_HEADER2-KNAME1, sy-vline,
  WA_IDGT_S_HEADER2-KSTCD5, sy-vline,
  WA_IDGT_S_HEADER2-KSTRAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDGT_S_HEADER2 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_IDGT_S_HEADER2 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_IDGT_S_HEADER2 INTO WA_IDGT_S_HEADER2.


*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.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDGT_S_HEADER2-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDGT_S_HEADER2-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INVTYP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDGT_S_HEADER2-INVTYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDGT_S_HEADER2-INVTYP.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_IDGT_S_HEADER2_STR, 
REFVBELN TYPE STRING,
COMBINEID TYPE STRING,
GTSTATUS TYPE STRING,
TLINES TYPE STRING,
SENTDATE TYPE STRING,
FILETYPE TYPE STRING,
NOTE TYPE STRING,
KUNNR TYPE STRING,
KNAME1 TYPE STRING,
KSTCD5 TYPE STRING,
KSTRAS TYPE STRING,
KBANKA TYPE STRING,
VUSNAM TYPE STRING,
CUSNAM TYPE STRING,
VBANKA TYPE STRING,
VSTRAS TYPE STRING,
GTVBELN TYPE STRING,
INVTYP TYPE STRING,
TYPCODE TYPE STRING,
CANCELIND TYPE STRING,
GOODSLIST TYPE STRING,
GLISTIND TYPE STRING,
KSTCD1 TYPE STRING,
POS_GTVBELN TYPE STRING,
POS_TYPCODE TYPE STRING,
PRINTDAT TYPE STRING,
NETWR_DOC TYPE STRING,
ITEM_MRG_TYP TYPE STRING,
DOC_DATE TYPE STRING,
DOC_TIME TYPE STRING,
BUYER_BUSTYP TYPE STRING,
BUYER_PHONE TYPE STRING,
BUYER_MOBILE TYPE STRING,
BUYER_PROVINCE TYPE STRING,
BUYER_EMAIL TYPE STRING,
SELLER_NAME TYPE STRING,
SELLER_BANK TYPE STRING,
SELLER_ADDR_TEL TYPE STRING,
SELLER_PHONE TYPE STRING,
RED_NOTE_IND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDGT_S_HEADER2_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_IDGT_S_HEADER2_STR-REFVBELN sy-vline 
WA_IDGT_S_HEADER2_STR-COMBINEID sy-vline 
WA_IDGT_S_HEADER2_STR-GTSTATUS sy-vline 
WA_IDGT_S_HEADER2_STR-TLINES sy-vline 
WA_IDGT_S_HEADER2_STR-SENTDATE sy-vline 
WA_IDGT_S_HEADER2_STR-FILETYPE sy-vline 
WA_IDGT_S_HEADER2_STR-NOTE sy-vline 
WA_IDGT_S_HEADER2_STR-KUNNR sy-vline 
WA_IDGT_S_HEADER2_STR-KNAME1 sy-vline 
WA_IDGT_S_HEADER2_STR-KSTCD5 sy-vline 
WA_IDGT_S_HEADER2_STR-KSTRAS sy-vline 
WA_IDGT_S_HEADER2_STR-KBANKA sy-vline 
WA_IDGT_S_HEADER2_STR-VUSNAM sy-vline 
WA_IDGT_S_HEADER2_STR-CUSNAM sy-vline 
WA_IDGT_S_HEADER2_STR-VBANKA sy-vline 
WA_IDGT_S_HEADER2_STR-VSTRAS sy-vline 
WA_IDGT_S_HEADER2_STR-GTVBELN sy-vline 
WA_IDGT_S_HEADER2_STR-INVTYP sy-vline 
WA_IDGT_S_HEADER2_STR-TYPCODE sy-vline 
WA_IDGT_S_HEADER2_STR-CANCELIND sy-vline 
WA_IDGT_S_HEADER2_STR-GOODSLIST sy-vline 
WA_IDGT_S_HEADER2_STR-GLISTIND sy-vline 
WA_IDGT_S_HEADER2_STR-KSTCD1 sy-vline 
WA_IDGT_S_HEADER2_STR-POS_GTVBELN sy-vline 
WA_IDGT_S_HEADER2_STR-POS_TYPCODE sy-vline 
WA_IDGT_S_HEADER2_STR-PRINTDAT sy-vline 
WA_IDGT_S_HEADER2_STR-NETWR_DOC sy-vline 
WA_IDGT_S_HEADER2_STR-ITEM_MRG_TYP sy-vline 
WA_IDGT_S_HEADER2_STR-DOC_DATE sy-vline 
WA_IDGT_S_HEADER2_STR-DOC_TIME sy-vline 
WA_IDGT_S_HEADER2_STR-BUYER_BUSTYP sy-vline 
WA_IDGT_S_HEADER2_STR-BUYER_PHONE sy-vline 
WA_IDGT_S_HEADER2_STR-BUYER_MOBILE sy-vline 
WA_IDGT_S_HEADER2_STR-BUYER_PROVINCE sy-vline 
WA_IDGT_S_HEADER2_STR-BUYER_EMAIL sy-vline 
WA_IDGT_S_HEADER2_STR-SELLER_NAME sy-vline 
WA_IDGT_S_HEADER2_STR-SELLER_BANK sy-vline 
WA_IDGT_S_HEADER2_STR-SELLER_ADDR_TEL sy-vline 
WA_IDGT_S_HEADER2_STR-SELLER_PHONE sy-vline 
WA_IDGT_S_HEADER2_STR-RED_NOTE_IND sy-vline      INTO ld_text SEPARATED BY SPACE.

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