ABAP Select data from SAP table KONDNS into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KONDNS 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 KONDNS. 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 KONDNS 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_KONDNS TYPE STANDARD TABLE OF KONDNS,
      WA_KONDNS TYPE KONDNS,
      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: <KONDNS> TYPE KONDNS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KONDNS
*  INTO TABLE @DATA(IT_KONDNS2).
*--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_KONDNS INDEX 1 INTO DATA(WA_KONDNS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KONDNS>-MANDT = 1.
<KONDNS>-KNUMH = 1.
<KONDNS>-KNRPOS = 1.
<KONDNS>-KNRMM = 1.
<KONDNS>-KNRNM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KONDNS-KNRME, sy-vline,
  WA_KONDNS-KNRZM, sy-vline,
  WA_KONDNS-KNREZ, sy-vline,
  WA_KONDNS-KNRMAT, sy-vline,
  WA_KONDNS-KNRRR, sy-vline,
  WA_KONDNS-KNRDD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KONDNS 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_KONDNS 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_KONDNS INTO WA_KONDNS.


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

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

*Conversion exit MATN1, internal->external for field KNRMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KONDNS-KNRMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KONDNS-KNRMAT.
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_KONDNS_STR, 
MANDT TYPE STRING,
KNUMH TYPE STRING,
KNRPOS TYPE STRING,
KNRMM TYPE STRING,
KNRNM TYPE STRING,
KNRME TYPE STRING,
KNRZM TYPE STRING,
KNREZ TYPE STRING,
KNRMAT TYPE STRING,
KNRRR TYPE STRING,
KNRDD TYPE STRING,
LSTANR TYPE STRING,
BBYPER TYPE STRING,
BBYVAL TYPE STRING,
BBYCUR TYPE STRING,
BBYRQMIN TYPE STRING,
BBYRQMAX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KONDNS_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_KONDNS_STR-MANDT sy-vline 
WA_KONDNS_STR-KNUMH sy-vline 
WA_KONDNS_STR-KNRPOS sy-vline 
WA_KONDNS_STR-KNRMM sy-vline 
WA_KONDNS_STR-KNRNM sy-vline 
WA_KONDNS_STR-KNRME sy-vline 
WA_KONDNS_STR-KNRZM sy-vline 
WA_KONDNS_STR-KNREZ sy-vline 
WA_KONDNS_STR-KNRMAT sy-vline 
WA_KONDNS_STR-KNRRR sy-vline 
WA_KONDNS_STR-KNRDD sy-vline 
WA_KONDNS_STR-LSTANR sy-vline 
WA_KONDNS_STR-BBYPER sy-vline 
WA_KONDNS_STR-BBYVAL sy-vline 
WA_KONDNS_STR-BBYCUR sy-vline 
WA_KONDNS_STR-BBYRQMIN sy-vline 
WA_KONDNS_STR-BBYRQMAX sy-vline      INTO ld_text SEPARATED BY SPACE.

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