ABAP Select data from SAP table PKNBNCTNSTSAGGR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKNBNCTNSTSAGGR
*  INTO TABLE @DATA(IT_PKNBNCTNSTSAGGR2).
*--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_PKNBNCTNSTSAGGR INDEX 1 INTO DATA(WA_PKNBNCTNSTSAGGR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKNBNCTNSTSAGGR>-MANDT = 1.
<PKNBNCTNSTSAGGR>-KANBANCONTROLCYCLE = 1.
<PKNBNCTNSTSAGGR>-PLANT = 1.
<PKNBNCTNSTSAGGR>-MAXNROFEMPTYKANBANCONTAINERS = 1.
<PKNBNCTNSTSAGGR>-BASEUNIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKNBNCTNSTSAGGR-NUMBEROFKANBANCONTAINERS, sy-vline,
  WA_PKNBNCTNSTSAGGR-NUMBEROFWAITINGKANBANCTNS, sy-vline,
  WA_PKNBNCTNSTSAGGR-NUMBEROFEMPTYKANBANCONTAINERS, sy-vline,
  WA_PKNBNCTNSTSAGGR-NUMBEROFKANBANCTNSINPROCESS, sy-vline,
  WA_PKNBNCTNSTSAGGR-NUMBEROFKANBANCTNSINTRANSIT, sy-vline,
  WA_PKNBNCTNSTSAGGR-NUMBEROFFULLKANBANCONTAINERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKNBNCTNSTSAGGR 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_PKNBNCTNSTSAGGR 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_PKNBNCTNSTSAGGR INTO WA_PKNBNCTNSTSAGGR.


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

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PKNBNCTNSTSAGGR-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKNBNCTNSTSAGGR-SUPPLIER.
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_PKNBNCTNSTSAGGR_STR, 
MANDT TYPE STRING,
KANBANCONTROLCYCLE TYPE STRING,
PLANT TYPE STRING,
MAXNROFEMPTYKANBANCONTAINERS TYPE STRING,
BASEUNIT TYPE STRING,
NUMBEROFKANBANCONTAINERS TYPE STRING,
NUMBEROFWAITINGKANBANCTNS TYPE STRING,
NUMBEROFEMPTYKANBANCONTAINERS TYPE STRING,
NUMBEROFKANBANCTNSINPROCESS TYPE STRING,
NUMBEROFKANBANCTNSINTRANSIT TYPE STRING,
NUMBEROFFULLKANBANCONTAINERS TYPE STRING,
NUMBEROFKANBANCONTAINERSINUSE TYPE STRING,
NUMBEROFKANBANCTNSWITHERROR TYPE STRING,
NUMBEROFLOCKEDKANBANCONTAINERS TYPE STRING,
NMBROFCTNSWHEREGOODSRCPTISMISG TYPE STRING,
NMBROFCTNSWHEREGDSRCPTISAHEAD TYPE STRING,
ACTUALQUANTITYINBASEUNIT TYPE STRING,
REQUESTEDQUANTITYINBASEUNIT TYPE STRING,
NUMBEROFNONFULLKANBANCNTS TYPE STRING,
CTRLCYCNEXTRCPTINUTCDTETME TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
SUPPLIER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKNBNCTNSTSAGGR_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_PKNBNCTNSTSAGGR_STR-MANDT sy-vline 
WA_PKNBNCTNSTSAGGR_STR-KANBANCONTROLCYCLE sy-vline 
WA_PKNBNCTNSTSAGGR_STR-PLANT sy-vline 
WA_PKNBNCTNSTSAGGR_STR-MAXNROFEMPTYKANBANCONTAINERS sy-vline 
WA_PKNBNCTNSTSAGGR_STR-BASEUNIT sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NUMBEROFKANBANCONTAINERS sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NUMBEROFWAITINGKANBANCTNS sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NUMBEROFEMPTYKANBANCONTAINERS sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NUMBEROFKANBANCTNSINPROCESS sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NUMBEROFKANBANCTNSINTRANSIT sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NUMBEROFFULLKANBANCONTAINERS sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NUMBEROFKANBANCONTAINERSINUSE sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NUMBEROFKANBANCTNSWITHERROR sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NUMBEROFLOCKEDKANBANCONTAINERS sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NMBROFCTNSWHEREGOODSRCPTISMISG sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NMBROFCTNSWHEREGDSRCPTISAHEAD sy-vline 
WA_PKNBNCTNSTSAGGR_STR-ACTUALQUANTITYINBASEUNIT sy-vline 
WA_PKNBNCTNSTSAGGR_STR-REQUESTEDQUANTITYINBASEUNIT sy-vline 
WA_PKNBNCTNSTSAGGR_STR-NUMBEROFNONFULLKANBANCNTS sy-vline 
WA_PKNBNCTNSTSAGGR_STR-CTRLCYCNEXTRCPTINUTCDTETME sy-vline 
WA_PKNBNCTNSTSAGGR_STR-LASTCHANGEDATETIME sy-vline 
WA_PKNBNCTNSTSAGGR_STR-SUPPLIER sy-vline      INTO ld_text SEPARATED BY SPACE.

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