ABAP Select data from SAP table IDSAU_ITD_S_HEAD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDSAU_ITD_S_HEAD
*  INTO TABLE @DATA(IT_IDSAU_ITD_S_HEAD2).
*--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_IDSAU_ITD_S_HEAD INDEX 1 INTO DATA(WA_IDSAU_ITD_S_HEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDSAU_ITD_S_HEAD>-COMM_NAME = 1.
<IDSAU_ITD_S_HEAD>-LEGAL_STATUS = 1.
<IDSAU_ITD_S_HEAD>-MAIN_ACTIVITY = 1.
<IDSAU_ITD_S_HEAD>-DESCR_ACTIVITY = 1.
<IDSAU_ITD_S_HEAD>-BRANCH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDSAU_ITD_S_HEAD-FINANCIAL_NO, sy-vline,
  WA_IDSAU_ITD_S_HEAD-FISC_Y_FROM, sy-vline,
  WA_IDSAU_ITD_S_HEAD-FISC_Y_TO, sy-vline,
  WA_IDSAU_ITD_S_HEAD-P_O_BOX, sy-vline,
  WA_IDSAU_ITD_S_HEAD-ZIP_CODE, sy-vline,
  WA_IDSAU_ITD_S_HEAD-TELEPHONE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDSAU_ITD_S_HEAD 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_IDSAU_ITD_S_HEAD 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_IDSAU_ITD_S_HEAD INTO WA_IDSAU_ITD_S_HEAD.


*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 SXIDN, internal->external for field E_MAIL
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_IDSAU_ITD_S_HEAD-E_MAIL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDSAU_ITD_S_HEAD-E_MAIL.
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_IDSAU_ITD_S_HEAD_STR, 
COMM_NAME TYPE STRING,
LEGAL_STATUS TYPE STRING,
MAIN_ACTIVITY TYPE STRING,
DESCR_ACTIVITY TYPE STRING,
BRANCH TYPE STRING,
FINANCIAL_NO TYPE STRING,
FISC_Y_FROM TYPE STRING,
FISC_Y_TO TYPE STRING,
P_O_BOX TYPE STRING,
ZIP_CODE TYPE STRING,
TELEPHONE TYPE STRING,
FAX TYPE STRING,
E_MAIL TYPE STRING,
BUILDING TYPE STRING,
STREET TYPE STRING,
DISTRICT TYPE STRING,
CITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDSAU_ITD_S_HEAD_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_IDSAU_ITD_S_HEAD_STR-COMM_NAME sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-LEGAL_STATUS sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-MAIN_ACTIVITY sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-DESCR_ACTIVITY sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-BRANCH sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-FINANCIAL_NO sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-FISC_Y_FROM sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-FISC_Y_TO sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-P_O_BOX sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-ZIP_CODE sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-TELEPHONE sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-FAX sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-E_MAIL sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-BUILDING sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-STREET sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-DISTRICT sy-vline 
WA_IDSAU_ITD_S_HEAD_STR-CITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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