ABAP Select data from SAP table PXKRS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PXKRS
*  INTO TABLE @DATA(IT_PXKRS2).
*--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_PXKRS INDEX 1 INTO DATA(WA_PXKRS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PXKRS>-PLVAR = 1.
<PXKRS>-TYP_ID_SRK = 1.
<PXKRS>-TYP_ID = 1.
<PXKRS>-TYP_SHORT = 1.
<PXKRS>-TYP_STEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PXKRS-LANGU, sy-vline,
  WA_PXKRS-KURS_ID, sy-vline,
  WA_PXKRS-KURS_SHORT, sy-vline,
  WA_PXKRS-KURS_STEXT, sy-vline,
  WA_PXKRS-BEGDA, sy-vline,
  WA_PXKRS-ENDDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PXKRS 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_PXKRS 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_PXKRS INTO WA_PXKRS.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PXKRS-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PXKRS-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PXKRS-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PXKRS-KOSTL.
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_PXKRS_STR, 
PLVAR TYPE STRING,
TYP_ID_SRK TYPE STRING,
TYP_ID TYPE STRING,
TYP_SHORT TYPE STRING,
TYP_STEXT TYPE STRING,
LANGU TYPE STRING,
KURS_ID TYPE STRING,
KURS_SHORT TYPE STRING,
KURS_STEXT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
NDAYS TYPE STRING,
NHOURS TYPE STRING,
OPTKAP TYPE STRING,
IKOST TYPE STRING,
IWAER TYPE STRING,
EKOST TYPE STRING,
EWAER TYPE STRING,
KOSTL TYPE STRING,
KOKRS TYPE STRING,
BEZEK TYPE STRING,
FIRMA_TYP TYPE STRING,
FIRMA_TY_T TYPE STRING,
FIRMA_ID_S TYPE STRING,
FIRMA_ID TYPE STRING,
FIRM_SHORT TYPE STRING,
FIRM_STEXT TYPE STRING,
ORT_ID_SRK TYPE STRING,
ORT_ID TYPE STRING,
ORT_SHORT TYPE STRING,
ORT_STEXT TYPE STRING,
PMODE TYPE STRING,
PMODE_TEXT TYPE STRING,
STRICT TYPE STRING,
STRICT_TXT TYPE STRING,
ISTAT TYPE STRING,
MODE_DIAL TYPE STRING,
MODE_DARK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PXKRS_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_PXKRS_STR-PLVAR sy-vline 
WA_PXKRS_STR-TYP_ID_SRK sy-vline 
WA_PXKRS_STR-TYP_ID sy-vline 
WA_PXKRS_STR-TYP_SHORT sy-vline 
WA_PXKRS_STR-TYP_STEXT sy-vline 
WA_PXKRS_STR-LANGU sy-vline 
WA_PXKRS_STR-KURS_ID sy-vline 
WA_PXKRS_STR-KURS_SHORT sy-vline 
WA_PXKRS_STR-KURS_STEXT sy-vline 
WA_PXKRS_STR-BEGDA sy-vline 
WA_PXKRS_STR-ENDDA sy-vline 
WA_PXKRS_STR-NDAYS sy-vline 
WA_PXKRS_STR-NHOURS sy-vline 
WA_PXKRS_STR-OPTKAP sy-vline 
WA_PXKRS_STR-IKOST sy-vline 
WA_PXKRS_STR-IWAER sy-vline 
WA_PXKRS_STR-EKOST sy-vline 
WA_PXKRS_STR-EWAER sy-vline 
WA_PXKRS_STR-KOSTL sy-vline 
WA_PXKRS_STR-KOKRS sy-vline 
WA_PXKRS_STR-BEZEK sy-vline 
WA_PXKRS_STR-FIRMA_TYP sy-vline 
WA_PXKRS_STR-FIRMA_TY_T sy-vline 
WA_PXKRS_STR-FIRMA_ID_S sy-vline 
WA_PXKRS_STR-FIRMA_ID sy-vline 
WA_PXKRS_STR-FIRM_SHORT sy-vline 
WA_PXKRS_STR-FIRM_STEXT sy-vline 
WA_PXKRS_STR-ORT_ID_SRK sy-vline 
WA_PXKRS_STR-ORT_ID sy-vline 
WA_PXKRS_STR-ORT_SHORT sy-vline 
WA_PXKRS_STR-ORT_STEXT sy-vline 
WA_PXKRS_STR-PMODE sy-vline 
WA_PXKRS_STR-PMODE_TEXT sy-vline 
WA_PXKRS_STR-STRICT sy-vline 
WA_PXKRS_STR-STRICT_TXT sy-vline 
WA_PXKRS_STR-ISTAT sy-vline 
WA_PXKRS_STR-MODE_DIAL sy-vline 
WA_PXKRS_STR-MODE_DARK sy-vline      INTO ld_text SEPARATED BY SPACE.

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