ABAP Select data from SAP table TDS_DELDUE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TDS_DELDUE 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_DELDUE. 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_DELDUE 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_DELDUE TYPE STANDARD TABLE OF TDS_DELDUE,
      WA_TDS_DELDUE TYPE TDS_DELDUE,
      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_DELDUE> TYPE TDS_DELDUE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDS_DELDUE
*  INTO TABLE @DATA(IT_TDS_DELDUE2).
*--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_DELDUE INDEX 1 INTO DATA(WA_TDS_DELDUE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDS_DELDUE>-AMPEL = 1.
<TDS_DELDUE>-LIGHT = 1.
<TDS_DELDUE>-VSTEL = 1.
<TDS_DELDUE>-AUART = 1.
<TDS_DELDUE>-VBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDS_DELDUE-POSNR, sy-vline,
  WA_TDS_DELDUE-VKORG, sy-vline,
  WA_TDS_DELDUE-VTWEG, sy-vline,
  WA_TDS_DELDUE-VKBUR, sy-vline,
  WA_TDS_DELDUE-KUNAG, sy-vline,
  WA_TDS_DELDUE-KUNAG_T, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDS_DELDUE 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_DELDUE 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_DELDUE INTO WA_TDS_DELDUE.


*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 AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_TDS_DELDUE-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_DELDUE-AUART.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_TDS_DELDUE-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_DELDUE-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TDS_DELDUE-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_DELDUE-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TDS_DELDUE-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_DELDUE-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TDS_DELDUE-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_DELDUE-VOLEH.
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_TDS_DELDUE_STR, 
AMPEL TYPE STRING,
LIGHT TYPE STRING,
VSTEL TYPE STRING,
AUART TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
VKBUR TYPE STRING,
KUNAG TYPE STRING,
KUNAG_T TYPE STRING,
KUNWE TYPE STRING,
KUNWE_T TYPE STRING,
TDDAT TYPE STRING,
MBDAT TYPE STRING,
WADAT TYPE STRING,
EDATU TYPE STRING,
ROUTE TYPE STRING,
VSBED TYPE STRING,
LPRIO TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
KWMENG TYPE STRING,
VRKME TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
TRVOG TYPE STRING,
POSNR_INT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDS_DELDUE_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_DELDUE_STR-AMPEL sy-vline 
WA_TDS_DELDUE_STR-LIGHT sy-vline 
WA_TDS_DELDUE_STR-VSTEL sy-vline 
WA_TDS_DELDUE_STR-AUART sy-vline 
WA_TDS_DELDUE_STR-VBELN sy-vline 
WA_TDS_DELDUE_STR-POSNR sy-vline 
WA_TDS_DELDUE_STR-VKORG sy-vline 
WA_TDS_DELDUE_STR-VTWEG sy-vline 
WA_TDS_DELDUE_STR-VKBUR sy-vline 
WA_TDS_DELDUE_STR-KUNAG sy-vline 
WA_TDS_DELDUE_STR-KUNAG_T sy-vline 
WA_TDS_DELDUE_STR-KUNWE sy-vline 
WA_TDS_DELDUE_STR-KUNWE_T sy-vline 
WA_TDS_DELDUE_STR-TDDAT sy-vline 
WA_TDS_DELDUE_STR-MBDAT sy-vline 
WA_TDS_DELDUE_STR-WADAT sy-vline 
WA_TDS_DELDUE_STR-EDATU sy-vline 
WA_TDS_DELDUE_STR-ROUTE sy-vline 
WA_TDS_DELDUE_STR-VSBED sy-vline 
WA_TDS_DELDUE_STR-LPRIO sy-vline 
WA_TDS_DELDUE_STR-MATNR sy-vline 
WA_TDS_DELDUE_STR-MAKTX sy-vline 
WA_TDS_DELDUE_STR-KWMENG sy-vline 
WA_TDS_DELDUE_STR-VRKME sy-vline 
WA_TDS_DELDUE_STR-BRGEW sy-vline 
WA_TDS_DELDUE_STR-GEWEI sy-vline 
WA_TDS_DELDUE_STR-VOLUM sy-vline 
WA_TDS_DELDUE_STR-VOLEH sy-vline 
WA_TDS_DELDUE_STR-TRVOG sy-vline 
WA_TDS_DELDUE_STR-POSNR_INT sy-vline      INTO ld_text SEPARATED BY SPACE.

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