ABAP Select data from SAP table LIKPUK 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 LIKPUK 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 LIKPUK. 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 LIKPUK 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_LIKPUK TYPE STANDARD TABLE OF LIKPUK,
      WA_LIKPUK TYPE LIKPUK,
      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: <LIKPUK> TYPE LIKPUK.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LIKPUK
*  INTO TABLE @DATA(IT_LIKPUK2).
*--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_LIKPUK INDEX 1 INTO DATA(WA_LIKPUK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LIKPUK>-MANDT = 1.
<LIKPUK>-VBELN = 1.
<LIKPUK>-ERNAM = 1.
<LIKPUK>-ERZET = 1.
<LIKPUK>-ERDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LIKPUK-BZIRK, sy-vline,
  WA_LIKPUK-VSTEL, sy-vline,
  WA_LIKPUK-VKORG, sy-vline,
  WA_LIKPUK-LFART, sy-vline,
  WA_LIKPUK-AUTLF, sy-vline,
  WA_LIKPUK-KZAZU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LIKPUK 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_LIKPUK 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_LIKPUK INTO WA_LIKPUK.


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

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

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

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

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

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

*Conversion exit EXCRT, internal->external for field STCUR
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_LIKPUK-STCUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LIKPUK-STCUR.
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_LIKPUK_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
ERNAM TYPE STRING,
ERZET TYPE STRING,
ERDAT TYPE STRING,
BZIRK TYPE STRING,
VSTEL TYPE STRING,
VKORG TYPE STRING,
LFART TYPE STRING,
AUTLF TYPE STRING,
KZAZU TYPE STRING,
WADAT TYPE STRING,
LDDAT TYPE STRING,
TDDAT TYPE STRING,
LFDAT TYPE STRING,
KODAT TYPE STRING,
ABLAD TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
EXPKZ TYPE STRING,
ROUTE TYPE STRING,
FAKSK TYPE STRING,
LIFSK TYPE STRING,
VBTYP TYPE STRING,
KNFAK TYPE STRING,
TPQUA TYPE STRING,
TPGRP TYPE STRING,
LPRIO TYPE STRING,
VSBED TYPE STRING,
KUNNR TYPE STRING,
KUNAG TYPE STRING,
KDGRP TYPE STRING,
STZKL TYPE STRING,
STZZU TYPE STRING,
BTGEW TYPE STRING,
NTGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
ANZPK TYPE STRING,
BEROT TYPE STRING,
LFUHR TYPE STRING,
GRULG TYPE STRING,
LSTEL TYPE STRING,
TRAGR TYPE STRING,
FKARV TYPE STRING,
FKDAT TYPE STRING,
PERFK TYPE STRING,
ROUTA TYPE STRING,
STAFO TYPE STRING,
KALSM TYPE STRING,
KNUMV TYPE STRING,
WAERK TYPE STRING,
VKBUR TYPE STRING,
VBEAK TYPE STRING,
ZUKRL TYPE STRING,
VERUR TYPE STRING,
COMMN TYPE STRING,
STWAE TYPE STRING,
STCUR TYPE STRING,
EXNUM TYPE STRING,
AEDAT TYPE STRING,
LGNUM TYPE STRING,
WADAT_IST TYPE STRING,
AULWE TYPE STRING,
LGTOR TYPE STRING,
BESTK TYPE STRING,
WBSTK TYPE STRING,
FKSTK TYPE STRING,
GBSTK TYPE STRING,
KOSTK TYPE STRING,
KOQUK TYPE STRING,
LVSTK TYPE STRING,
UVALS TYPE STRING,
UVVLS TYPE STRING,
UVFAS TYPE STRING,
UVALL TYPE STRING,
UVVLK TYPE STRING,
UVFAK TYPE STRING,
PKSTK TYPE STRING,
TRSTA TYPE STRING,
CMGST TYPE STRING,
PDSTK TYPE STRING,
PODAT TYPE STRING,
POTIM TYPE STRING,
MSR_ACTIVE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LIKPUK_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_LIKPUK_STR-MANDT sy-vline 
WA_LIKPUK_STR-VBELN sy-vline 
WA_LIKPUK_STR-ERNAM sy-vline 
WA_LIKPUK_STR-ERZET sy-vline 
WA_LIKPUK_STR-ERDAT sy-vline 
WA_LIKPUK_STR-BZIRK sy-vline 
WA_LIKPUK_STR-VSTEL sy-vline 
WA_LIKPUK_STR-VKORG sy-vline 
WA_LIKPUK_STR-LFART sy-vline 
WA_LIKPUK_STR-AUTLF sy-vline 
WA_LIKPUK_STR-KZAZU sy-vline 
WA_LIKPUK_STR-WADAT sy-vline 
WA_LIKPUK_STR-LDDAT sy-vline 
WA_LIKPUK_STR-TDDAT sy-vline 
WA_LIKPUK_STR-LFDAT sy-vline 
WA_LIKPUK_STR-KODAT sy-vline 
WA_LIKPUK_STR-ABLAD sy-vline 
WA_LIKPUK_STR-INCO1 sy-vline 
WA_LIKPUK_STR-INCO2 sy-vline 
WA_LIKPUK_STR-EXPKZ sy-vline 
WA_LIKPUK_STR-ROUTE sy-vline 
WA_LIKPUK_STR-FAKSK sy-vline 
WA_LIKPUK_STR-LIFSK sy-vline 
WA_LIKPUK_STR-VBTYP sy-vline 
WA_LIKPUK_STR-KNFAK sy-vline 
WA_LIKPUK_STR-TPQUA sy-vline 
WA_LIKPUK_STR-TPGRP sy-vline 
WA_LIKPUK_STR-LPRIO sy-vline 
WA_LIKPUK_STR-VSBED sy-vline 
WA_LIKPUK_STR-KUNNR sy-vline 
WA_LIKPUK_STR-KUNAG sy-vline 
WA_LIKPUK_STR-KDGRP sy-vline 
WA_LIKPUK_STR-STZKL sy-vline 
WA_LIKPUK_STR-STZZU sy-vline 
WA_LIKPUK_STR-BTGEW sy-vline 
WA_LIKPUK_STR-NTGEW sy-vline 
WA_LIKPUK_STR-GEWEI sy-vline 
WA_LIKPUK_STR-VOLUM sy-vline 
WA_LIKPUK_STR-VOLEH sy-vline 
WA_LIKPUK_STR-ANZPK sy-vline 
WA_LIKPUK_STR-BEROT sy-vline 
WA_LIKPUK_STR-LFUHR sy-vline 
WA_LIKPUK_STR-GRULG sy-vline 
WA_LIKPUK_STR-LSTEL sy-vline 
WA_LIKPUK_STR-TRAGR sy-vline 
WA_LIKPUK_STR-FKARV sy-vline 
WA_LIKPUK_STR-FKDAT sy-vline 
WA_LIKPUK_STR-PERFK sy-vline 
WA_LIKPUK_STR-ROUTA sy-vline 
WA_LIKPUK_STR-STAFO sy-vline 
WA_LIKPUK_STR-KALSM sy-vline 
WA_LIKPUK_STR-KNUMV sy-vline 
WA_LIKPUK_STR-WAERK sy-vline 
WA_LIKPUK_STR-VKBUR sy-vline 
WA_LIKPUK_STR-VBEAK sy-vline 
WA_LIKPUK_STR-ZUKRL sy-vline 
WA_LIKPUK_STR-VERUR sy-vline 
WA_LIKPUK_STR-COMMN sy-vline 
WA_LIKPUK_STR-STWAE sy-vline 
WA_LIKPUK_STR-STCUR sy-vline 
WA_LIKPUK_STR-EXNUM sy-vline 
WA_LIKPUK_STR-AEDAT sy-vline 
WA_LIKPUK_STR-LGNUM sy-vline 
WA_LIKPUK_STR-WADAT_IST sy-vline 
WA_LIKPUK_STR-AULWE sy-vline 
WA_LIKPUK_STR-LGTOR sy-vline 
WA_LIKPUK_STR-BESTK sy-vline 
WA_LIKPUK_STR-WBSTK sy-vline 
WA_LIKPUK_STR-FKSTK sy-vline 
WA_LIKPUK_STR-GBSTK sy-vline 
WA_LIKPUK_STR-KOSTK sy-vline 
WA_LIKPUK_STR-KOQUK sy-vline 
WA_LIKPUK_STR-LVSTK sy-vline 
WA_LIKPUK_STR-UVALS sy-vline 
WA_LIKPUK_STR-UVVLS sy-vline 
WA_LIKPUK_STR-UVFAS sy-vline 
WA_LIKPUK_STR-UVALL sy-vline 
WA_LIKPUK_STR-UVVLK sy-vline 
WA_LIKPUK_STR-UVFAK sy-vline 
WA_LIKPUK_STR-PKSTK sy-vline 
WA_LIKPUK_STR-TRSTA sy-vline 
WA_LIKPUK_STR-CMGST sy-vline 
WA_LIKPUK_STR-PDSTK sy-vline 
WA_LIKPUK_STR-PODAT sy-vline 
WA_LIKPUK_STR-POTIM sy-vline 
WA_LIKPUK_STR-MSR_ACTIVE sy-vline      INTO ld_text SEPARATED BY SPACE.

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