ABAP Select data from SAP table PKOSA 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 PKOSA 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 PKOSA. 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 PKOSA 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_PKOSA TYPE STANDARD TABLE OF PKOSA,
      WA_PKOSA TYPE PKOSA,
      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: <PKOSA> TYPE PKOSA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKOSA
*  INTO TABLE @DATA(IT_PKOSA2).
*--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_PKOSA INDEX 1 INTO DATA(WA_PKOSA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKOSA>-AUART = 1.
<PKOSA>-AUTYP = 1.
<PKOSA>-AUFNR = 1.
<PKOSA>-PROCNR = 1.
<PKOSA>-PROTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKOSA-SAFNR, sy-vline,
  WA_PKOSA-VERID, sy-vline,
  WA_PKOSA-ERNAM, sy-vline,
  WA_PKOSA-ERDAT, sy-vline,
  WA_PKOSA-AENAM, sy-vline,
  WA_PKOSA-AEDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKOSA 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_PKOSA 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_PKOSA INTO WA_PKOSA.


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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PKOSA-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKOSA-PRCTR.
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_PKOSA_STR, 
AUART TYPE STRING,
AUTYP TYPE STRING,
AUFNR TYPE STRING,
PROCNR TYPE STRING,
PROTY TYPE STRING,
SAFNR TYPE STRING,
VERID TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
AUFEX TYPE STRING,
KTEXT TYPE STRING,
KOSTV TYPE STRING,
STORT TYPE STRING,
SOWRK TYPE STRING,
LOEKZ TYPE STRING,
KLVARP TYPE STRING,
KLVARI TYPE STRING,
KALSM TYPE STRING,
ZSCHL TYPE STRING,
ABKRS TYPE STRING,
KSTAR TYPE STRING,
KOSTL TYPE STRING,
SAKNR TYPE STRING,
SETNM TYPE STRING,
CYCLE TYPE STRING,
USER0 TYPE STRING,
USER1 TYPE STRING,
USER2 TYPE STRING,
USER3 TYPE STRING,
USER4 TYPE STRING,
USER5 TYPE STRING,
USER6 TYPE STRING,
USER7 TYPE STRING,
USER8 TYPE STRING,
USER9 TYPE STRING,
PSPEL TYPE STRING,
AWSLS TYPE STRING,
ABGSL TYPE STRING,
BWTTY TYPE STRING,
BWTAR TYPE STRING,
ELIKZ TYPE STRING,
PRCTR TYPE STRING,
GSBER TYPE STRING,
RTP01 TYPE STRING,
RTP02 TYPE STRING,
RTP03 TYPE STRING,
RTP04 TYPE STRING,
KSVON TYPE STRING,
KSBIS TYPE STRING,
PWERK TYPE STRING,
OBJNR TYPE STRING,
BUKRS TYPE STRING,
KOKRS TYPE STRING,
FUNC_AREA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKOSA_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_PKOSA_STR-AUART sy-vline 
WA_PKOSA_STR-AUTYP sy-vline 
WA_PKOSA_STR-AUFNR sy-vline 
WA_PKOSA_STR-PROCNR sy-vline 
WA_PKOSA_STR-PROTY sy-vline 
WA_PKOSA_STR-SAFNR sy-vline 
WA_PKOSA_STR-VERID sy-vline 
WA_PKOSA_STR-ERNAM sy-vline 
WA_PKOSA_STR-ERDAT sy-vline 
WA_PKOSA_STR-AENAM sy-vline 
WA_PKOSA_STR-AEDAT sy-vline 
WA_PKOSA_STR-MATNR sy-vline 
WA_PKOSA_STR-WERKS sy-vline 
WA_PKOSA_STR-AUFEX sy-vline 
WA_PKOSA_STR-KTEXT sy-vline 
WA_PKOSA_STR-KOSTV sy-vline 
WA_PKOSA_STR-STORT sy-vline 
WA_PKOSA_STR-SOWRK sy-vline 
WA_PKOSA_STR-LOEKZ sy-vline 
WA_PKOSA_STR-KLVARP sy-vline 
WA_PKOSA_STR-KLVARI sy-vline 
WA_PKOSA_STR-KALSM sy-vline 
WA_PKOSA_STR-ZSCHL sy-vline 
WA_PKOSA_STR-ABKRS sy-vline 
WA_PKOSA_STR-KSTAR sy-vline 
WA_PKOSA_STR-KOSTL sy-vline 
WA_PKOSA_STR-SAKNR sy-vline 
WA_PKOSA_STR-SETNM sy-vline 
WA_PKOSA_STR-CYCLE sy-vline 
WA_PKOSA_STR-USER0 sy-vline 
WA_PKOSA_STR-USER1 sy-vline 
WA_PKOSA_STR-USER2 sy-vline 
WA_PKOSA_STR-USER3 sy-vline 
WA_PKOSA_STR-USER4 sy-vline 
WA_PKOSA_STR-USER5 sy-vline 
WA_PKOSA_STR-USER6 sy-vline 
WA_PKOSA_STR-USER7 sy-vline 
WA_PKOSA_STR-USER8 sy-vline 
WA_PKOSA_STR-USER9 sy-vline 
WA_PKOSA_STR-PSPEL sy-vline 
WA_PKOSA_STR-AWSLS sy-vline 
WA_PKOSA_STR-ABGSL sy-vline 
WA_PKOSA_STR-BWTTY sy-vline 
WA_PKOSA_STR-BWTAR sy-vline 
WA_PKOSA_STR-ELIKZ sy-vline 
WA_PKOSA_STR-PRCTR sy-vline 
WA_PKOSA_STR-GSBER sy-vline 
WA_PKOSA_STR-RTP01 sy-vline 
WA_PKOSA_STR-RTP02 sy-vline 
WA_PKOSA_STR-RTP03 sy-vline 
WA_PKOSA_STR-RTP04 sy-vline 
WA_PKOSA_STR-KSVON sy-vline 
WA_PKOSA_STR-KSBIS sy-vline 
WA_PKOSA_STR-PWERK sy-vline 
WA_PKOSA_STR-OBJNR sy-vline 
WA_PKOSA_STR-BUKRS sy-vline 
WA_PKOSA_STR-KOKRS sy-vline 
WA_PKOSA_STR-FUNC_AREA sy-vline      INTO ld_text SEPARATED BY SPACE.

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