ABAP Select data from SAP table PEX2000 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PEX2000 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 PEX2000. 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 PEX2000 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_PEX2000 TYPE STANDARD TABLE OF PEX2000,
      WA_PEX2000 TYPE PEX2000,
      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: <PEX2000> TYPE PEX2000.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PEX2000.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PEX2000
  INTO TABLE IT_PEX2000.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PEX2000
*  INTO TABLE @DATA(IT_PEX20002).
*--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_PEX2000 INDEX 1 INTO DATA(WA_PEX20002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PEX2000 ASSIGNING <PEX2000>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PEX2000>-MANDT = 1.
<PEX2000>-LOGSYS = 1.
<PEX2000>-AWTYP = 1.
<PEX2000>-AWKEY = 1.
<PEX2000>-STOKZ = 1.

ENDLOOP.

LOOP AT IT_PEX2000 INTO WA_PEX2000.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PEX2000-CUSTFLD, sy-vline,
  WA_PEX2000-PERNR, sy-vline,
  WA_PEX2000-BEGDA, sy-vline,
  WA_PEX2000-ENDDA, sy-vline,
  WA_PEX2000-SPRPS, sy-vline,
  WA_PEX2000-AWART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PEX2000 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_PEX2000 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_PEX2000 INTO WA_PEX2000.


*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 LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PEX2000-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEX2000-LOGSYS.
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_PEX2000_STR, 
MANDT TYPE STRING,
LOGSYS TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
STOKZ TYPE STRING,
CUSTFLD TYPE STRING,
PERNR TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
SPRPS TYPE STRING,
AWART TYPE STRING,
BEGUZ TYPE STRING,
ENDUZ TYPE STRING,
STDAZ TYPE STRING,
VTKEN TYPE STRING,
ALLDF TYPE STRING,
VERSL TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
PRAKN TYPE STRING,
PRAKZ TYPE STRING,
OTYPE TYPE STRING,
PLANS TYPE STRING,
AUFKZ TYPE STRING,
BWGRL TYPE STRING,
WAERS TYPE STRING,
WTART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PEX2000_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_PEX2000_STR-MANDT sy-vline 
WA_PEX2000_STR-LOGSYS sy-vline 
WA_PEX2000_STR-AWTYP sy-vline 
WA_PEX2000_STR-AWKEY sy-vline 
WA_PEX2000_STR-STOKZ sy-vline 
WA_PEX2000_STR-CUSTFLD sy-vline 
WA_PEX2000_STR-PERNR sy-vline 
WA_PEX2000_STR-BEGDA sy-vline 
WA_PEX2000_STR-ENDDA sy-vline 
WA_PEX2000_STR-SPRPS sy-vline 
WA_PEX2000_STR-AWART sy-vline 
WA_PEX2000_STR-BEGUZ sy-vline 
WA_PEX2000_STR-ENDUZ sy-vline 
WA_PEX2000_STR-STDAZ sy-vline 
WA_PEX2000_STR-VTKEN sy-vline 
WA_PEX2000_STR-ALLDF sy-vline 
WA_PEX2000_STR-VERSL sy-vline 
WA_PEX2000_STR-TRFGR sy-vline 
WA_PEX2000_STR-TRFST sy-vline 
WA_PEX2000_STR-PRAKN sy-vline 
WA_PEX2000_STR-PRAKZ sy-vline 
WA_PEX2000_STR-OTYPE sy-vline 
WA_PEX2000_STR-PLANS sy-vline 
WA_PEX2000_STR-AUFKZ sy-vline 
WA_PEX2000_STR-BWGRL sy-vline 
WA_PEX2000_STR-WAERS sy-vline 
WA_PEX2000_STR-WTART sy-vline      INTO ld_text SEPARATED BY SPACE.

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