ABAP Select data from SAP table TEDSTSTRUC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TEDSTSTRUC
*  INTO TABLE @DATA(IT_TEDSTSTRUC2).
*--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_TEDSTSTRUC INDEX 1 INTO DATA(WA_TEDSTSTRUC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TEDSTSTRUC>-MANDT = 1.
<TEDSTSTRUC>-PARNUM = 1.
<TEDSTSTRUC>-PARTYP = 1.
<TEDSTSTRUC>-CLASS = 1.
<TEDSTSTRUC>-MATLVL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TEDSTSTRUC-TEST, sy-vline,
  WA_TEDSTSTRUC-ARCHIV, sy-vline,
  WA_TEDSTSTRUC-USRTYP, sy-vline,
  WA_TEDSTSTRUC-USRKEY, sy-vline,
  WA_TEDSTSTRUC-USRLNG, sy-vline,
  WA_TEDSTSTRUC-NAME1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TEDSTSTRUC 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_TEDSTSTRUC 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_TEDSTSTRUC INTO WA_TEDSTSTRUC.


*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 PARNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TEDSTSTRUC-PARNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TEDSTSTRUC-PARNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field USRLNG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_TEDSTSTRUC-USRLNG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TEDSTSTRUC-USRLNG.
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_TEDSTSTRUC_STR, 
MANDT TYPE STRING,
PARNUM TYPE STRING,
PARTYP TYPE STRING,
CLASS TYPE STRING,
MATLVL TYPE STRING,
TEST TYPE STRING,
ARCHIV TYPE STRING,
USRTYP TYPE STRING,
USRKEY TYPE STRING,
USRLNG TYPE STRING,
NAME1 TYPE STRING,
SORTL TYPE STRING,
LAND1 TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
SADR TYPE STRING,
SAKZ TYPE STRING,
PARTNER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TEDSTSTRUC_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_TEDSTSTRUC_STR-MANDT sy-vline 
WA_TEDSTSTRUC_STR-PARNUM sy-vline 
WA_TEDSTSTRUC_STR-PARTYP sy-vline 
WA_TEDSTSTRUC_STR-CLASS sy-vline 
WA_TEDSTSTRUC_STR-MATLVL sy-vline 
WA_TEDSTSTRUC_STR-TEST sy-vline 
WA_TEDSTSTRUC_STR-ARCHIV sy-vline 
WA_TEDSTSTRUC_STR-USRTYP sy-vline 
WA_TEDSTSTRUC_STR-USRKEY sy-vline 
WA_TEDSTSTRUC_STR-USRLNG sy-vline 
WA_TEDSTSTRUC_STR-NAME1 sy-vline 
WA_TEDSTSTRUC_STR-SORTL sy-vline 
WA_TEDSTSTRUC_STR-LAND1 sy-vline 
WA_TEDSTSTRUC_STR-PSTLZ sy-vline 
WA_TEDSTSTRUC_STR-ORT01 sy-vline 
WA_TEDSTSTRUC_STR-SADR sy-vline 
WA_TEDSTSTRUC_STR-SAKZ sy-vline 
WA_TEDSTSTRUC_STR-PARTNER sy-vline      INTO ld_text SEPARATED BY SPACE.

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