ABAP Select data from SAP table KALC_JVSND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KALC_JVSND
*  INTO TABLE @DATA(IT_KALC_JVSND2).
*--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_KALC_JVSND INDEX 1 INTO DATA(WA_KALC_JVSND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KALC_JVSND>-KOKRS = 1.
<KALC_JVSND>-BUKRS = 1.
<KALC_JVSND>-KOSTL = 1.
<KALC_JVSND>-AUFNR = 1.
<KALC_JVSND>-PSPNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KALC_JVSND-POSID, sy-vline,
  WA_KALC_JVSND-KSTAR, sy-vline,
  WA_KALC_JVSND-VERSN, sy-vline,
  WA_KALC_JVSND-WRTTP, sy-vline,
  WA_KALC_JVSND-GJAHR, sy-vline,
  WA_KALC_JVSND-RECIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KALC_JVSND 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_KALC_JVSND 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_KALC_JVSND INTO WA_KALC_JVSND.


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

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_KALC_JVSND-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALC_JVSND-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_KALC_JVSND-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALC_JVSND-POSID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KALC_JVSND-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALC_JVSND-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECIND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KALC_JVSND-RECIND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALC_JVSND-RECIND.
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_KALC_JVSND_STR, 
KOKRS TYPE STRING,
BUKRS TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
PSPNR TYPE STRING,
POSID TYPE STRING,
KSTAR TYPE STRING,
VERSN TYPE STRING,
WRTTP TYPE STRING,
GJAHR TYPE STRING,
RECIND TYPE STRING,
FROM TYPE STRING,
TO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KALC_JVSND_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_KALC_JVSND_STR-KOKRS sy-vline 
WA_KALC_JVSND_STR-BUKRS sy-vline 
WA_KALC_JVSND_STR-KOSTL sy-vline 
WA_KALC_JVSND_STR-AUFNR sy-vline 
WA_KALC_JVSND_STR-PSPNR sy-vline 
WA_KALC_JVSND_STR-POSID sy-vline 
WA_KALC_JVSND_STR-KSTAR sy-vline 
WA_KALC_JVSND_STR-VERSN sy-vline 
WA_KALC_JVSND_STR-WRTTP sy-vline 
WA_KALC_JVSND_STR-GJAHR sy-vline 
WA_KALC_JVSND_STR-RECIND sy-vline 
WA_KALC_JVSND_STR-FROM sy-vline 
WA_KALC_JVSND_STR-TO sy-vline      INTO ld_text SEPARATED BY SPACE.

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