ABAP Select data from SAP table TEM_STRUC_DISP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TEM_STRUC_DISP
*  INTO TABLE @DATA(IT_TEM_STRUC_DISP2).
*--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_TEM_STRUC_DISP INDEX 1 INTO DATA(WA_TEM_STRUC_DISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TEM_STRUC_DISP>-INPSTRUCT = 1.
<TEM_STRUC_DISP>-FIELD = 1.
<TEM_STRUC_DISP>-FLDNR = 1.
<TEM_STRUC_DISP>-PRTYPE = 1.
<TEM_STRUC_DISP>-REQU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TEM_STRUC_DISP-CUST, sy-vline,
  WA_TEM_STRUC_DISP-HIDE, sy-vline,
  WA_TEM_STRUC_DISP-MVETYPE, sy-vline,
  WA_TEM_STRUC_DISP-FLDLEN, sy-vline,
  WA_TEM_STRUC_DISP-LENG, sy-vline,
  WA_TEM_STRUC_DISP-INTLEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TEM_STRUC_DISP 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_TEM_STRUC_DISP 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_TEM_STRUC_DISP INTO WA_TEM_STRUC_DISP.


*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 DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_TEM_STRUC_DISP-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TEM_STRUC_DISP-DATATYPE.
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_TEM_STRUC_DISP_STR, 
INPSTRUCT TYPE STRING,
FIELD TYPE STRING,
FLDNR TYPE STRING,
PRTYPE TYPE STRING,
REQU TYPE STRING,
CUST TYPE STRING,
HIDE TYPE STRING,
MVETYPE TYPE STRING,
FLDLEN TYPE STRING,
LENG TYPE STRING,
INTLEN TYPE STRING,
OUTPUTLEN TYPE STRING,
DECIMALS TYPE STRING,
DATATYPE TYPE STRING,
INTTYPE TYPE STRING,
CONVEXIT TYPE STRING,
FIELDTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TEM_STRUC_DISP_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_TEM_STRUC_DISP_STR-INPSTRUCT sy-vline 
WA_TEM_STRUC_DISP_STR-FIELD sy-vline 
WA_TEM_STRUC_DISP_STR-FLDNR sy-vline 
WA_TEM_STRUC_DISP_STR-PRTYPE sy-vline 
WA_TEM_STRUC_DISP_STR-REQU sy-vline 
WA_TEM_STRUC_DISP_STR-CUST sy-vline 
WA_TEM_STRUC_DISP_STR-HIDE sy-vline 
WA_TEM_STRUC_DISP_STR-MVETYPE sy-vline 
WA_TEM_STRUC_DISP_STR-FLDLEN sy-vline 
WA_TEM_STRUC_DISP_STR-LENG sy-vline 
WA_TEM_STRUC_DISP_STR-INTLEN sy-vline 
WA_TEM_STRUC_DISP_STR-OUTPUTLEN sy-vline 
WA_TEM_STRUC_DISP_STR-DECIMALS sy-vline 
WA_TEM_STRUC_DISP_STR-DATATYPE sy-vline 
WA_TEM_STRUC_DISP_STR-INTTYPE sy-vline 
WA_TEM_STRUC_DISP_STR-CONVEXIT sy-vline 
WA_TEM_STRUC_DISP_STR-FIELDTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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