ABAP Select data from SAP table PISLI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PISLI
*  INTO TABLE @DATA(IT_PISLI2).
*--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_PISLI INDEX 1 INTO DATA(WA_PISLI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PISLI>-KBELN = 1.
<PISLI>-COMWO = 1.
<PISLI>-TRTYP = 1.
<PISLI>-DYNNR = 1.
<PISLI>-VKORG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PISLI-VTWEG, sy-vline,
  WA_PISLI-WERKS, sy-vline,
  WA_PISLI-PLTYP, sy-vline,
  WA_PISLI-WAERK, sy-vline,
  WA_PISLI-KALEB, sy-vline,
  WA_PISLI-KVEWE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PISLI 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_PISLI 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_PISLI INTO WA_PISLI.


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

*Conversion exit KOTAB, internal->external for field KOTABNR
CALL FUNCTION 'CONVERSION_EXIT_KOTAB_OUTPUT'
  EXPORTING
    input =                      WA_PISLI-KOTABNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PISLI-KOTABNR.
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_PISLI_STR, 
KBELN TYPE STRING,
COMWO TYPE STRING,
TRTYP TYPE STRING,
DYNNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
WERKS TYPE STRING,
PLTYP TYPE STRING,
WAERK TYPE STRING,
KALEB TYPE STRING,
KVEWE TYPE STRING,
KAPPL TYPE STRING,
KSCHL TYPE STRING,
KOTABNR TYPE STRING,
MBWSO TYPE STRING,
MATSO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PISLI_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_PISLI_STR-KBELN sy-vline 
WA_PISLI_STR-COMWO sy-vline 
WA_PISLI_STR-TRTYP sy-vline 
WA_PISLI_STR-DYNNR sy-vline 
WA_PISLI_STR-VKORG sy-vline 
WA_PISLI_STR-VTWEG sy-vline 
WA_PISLI_STR-WERKS sy-vline 
WA_PISLI_STR-PLTYP sy-vline 
WA_PISLI_STR-WAERK sy-vline 
WA_PISLI_STR-KALEB sy-vline 
WA_PISLI_STR-KVEWE sy-vline 
WA_PISLI_STR-KAPPL sy-vline 
WA_PISLI_STR-KSCHL sy-vline 
WA_PISLI_STR-KOTABNR sy-vline 
WA_PISLI_STR-MBWSO sy-vline 
WA_PISLI_STR-MATSO sy-vline      INTO ld_text SEPARATED BY SPACE.

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