ABAP Select data from SAP table PZPS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PZPS
*  INTO TABLE @DATA(IT_PZPS2).
*--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_PZPS INDEX 1 INTO DATA(WA_PZPS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PZPS>-MANDT = 1.
<PZPS>-OBJNR = 1.
<PZPS>-PLNKN = 1.
<PZPS>-ZAEHL = 1.
<PZPS>-VORNE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PZPS-PLNFL, sy-vline,
  WA_PZPS-MEINH, sy-vline,
  WA_PZPS-AUFAK, sy-vline,
  WA_PZPS-LMVRG, sy-vline,
  WA_PZPS-XMVRG, sy-vline,
  WA_PZPS-UMREZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PZPS 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_PZPS 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_PZPS INTO WA_PZPS.


*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 NUMCV, internal->external for field VORNE
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PZPS-VORNE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PZPS-VORNE.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field PLNME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PZPS-PLNME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PZPS-PLNME.
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_PZPS_STR, 
MANDT TYPE STRING,
OBJNR TYPE STRING,
PLNKN TYPE STRING,
ZAEHL TYPE STRING,
VORNE TYPE STRING,
PLNFL TYPE STRING,
MEINH TYPE STRING,
AUFAK TYPE STRING,
LMVRG TYPE STRING,
XMVRG TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
PLNME TYPE STRING,
KZZPK TYPE STRING,
SCOBJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PZPS_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_PZPS_STR-MANDT sy-vline 
WA_PZPS_STR-OBJNR sy-vline 
WA_PZPS_STR-PLNKN sy-vline 
WA_PZPS_STR-ZAEHL sy-vline 
WA_PZPS_STR-VORNE sy-vline 
WA_PZPS_STR-PLNFL sy-vline 
WA_PZPS_STR-MEINH sy-vline 
WA_PZPS_STR-AUFAK sy-vline 
WA_PZPS_STR-LMVRG sy-vline 
WA_PZPS_STR-XMVRG sy-vline 
WA_PZPS_STR-UMREZ sy-vline 
WA_PZPS_STR-UMREN sy-vline 
WA_PZPS_STR-PLNME sy-vline 
WA_PZPS_STR-KZZPK sy-vline 
WA_PZPS_STR-SCOBJ sy-vline      INTO ld_text SEPARATED BY SPACE.

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