ABAP Select data from SAP table PS2003 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS2003 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 PS2003. 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 PS2003 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_PS2003 TYPE STANDARD TABLE OF PS2003,
      WA_PS2003 TYPE PS2003,
      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: <PS2003> TYPE PS2003.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS2003.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS2003
  INTO TABLE IT_PS2003.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS2003
*  INTO TABLE @DATA(IT_PS20032).
*--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_PS2003 INDEX 1 INTO DATA(WA_PS20032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS2003 ASSIGNING <PS2003>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS2003>-BEGUZ = 1.
<PS2003>-ENDUZ = 1.
<PS2003>-VTKEN = 1.
<PS2003>-VTART = 1.
<PS2003>-STDAZ = 1.

ENDLOOP.

LOOP AT IT_PS2003 INTO WA_PS2003.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS2003-PAMOD, sy-vline,
  WA_PS2003-PBEG1, sy-vline,
  WA_PS2003-PEND1, sy-vline,
  WA_PS2003-PBEZ1, sy-vline,
  WA_PS2003-PUNB1, sy-vline,
  WA_PS2003-PBEG2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS2003 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_PS2003 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_PS2003 INTO WA_PS2003.


*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 TDTYP, internal->external for field TDTYPE
CALL FUNCTION 'CONVERSION_EXIT_TDTYP_OUTPUT'
  EXPORTING
    input =                      WA_PS2003-TDTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PS2003-TDTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PS2003-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PS2003-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AWREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PS2003-AWREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PS2003-AWREF.
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_PS2003_STR, 
BEGUZ TYPE STRING,
ENDUZ TYPE STRING,
VTKEN TYPE STRING,
VTART TYPE STRING,
STDAZ TYPE STRING,
PAMOD TYPE STRING,
PBEG1 TYPE STRING,
PEND1 TYPE STRING,
PBEZ1 TYPE STRING,
PUNB1 TYPE STRING,
PBEG2 TYPE STRING,
PEND2 TYPE STRING,
PBEZ2 TYPE STRING,
PUNB2 TYPE STRING,
ZEITY TYPE STRING,
MOFID TYPE STRING,
MOSID TYPE STRING,
SCHKZ TYPE STRING,
MOTPR TYPE STRING,
TPROG TYPE STRING,
VARIA TYPE STRING,
TAGTY TYPE STRING,
TPKLA TYPE STRING,
VPERN TYPE STRING,
AUFKZ TYPE STRING,
BWGRL TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
PRAKN TYPE STRING,
PRAKZ TYPE STRING,
OTYPE TYPE STRING,
PLANS TYPE STRING,
EXBEL TYPE STRING,
WAERS TYPE STRING,
WTART TYPE STRING,
TDLANGU TYPE STRING,
TDSUBLA TYPE STRING,
TDTYPE TYPE STRING,
LOGSYS TYPE STRING,
AWTYP TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
NXDFL TYPE STRING,
FTKLA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS2003_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_PS2003_STR-BEGUZ sy-vline 
WA_PS2003_STR-ENDUZ sy-vline 
WA_PS2003_STR-VTKEN sy-vline 
WA_PS2003_STR-VTART sy-vline 
WA_PS2003_STR-STDAZ sy-vline 
WA_PS2003_STR-PAMOD sy-vline 
WA_PS2003_STR-PBEG1 sy-vline 
WA_PS2003_STR-PEND1 sy-vline 
WA_PS2003_STR-PBEZ1 sy-vline 
WA_PS2003_STR-PUNB1 sy-vline 
WA_PS2003_STR-PBEG2 sy-vline 
WA_PS2003_STR-PEND2 sy-vline 
WA_PS2003_STR-PBEZ2 sy-vline 
WA_PS2003_STR-PUNB2 sy-vline 
WA_PS2003_STR-ZEITY sy-vline 
WA_PS2003_STR-MOFID sy-vline 
WA_PS2003_STR-MOSID sy-vline 
WA_PS2003_STR-SCHKZ sy-vline 
WA_PS2003_STR-MOTPR sy-vline 
WA_PS2003_STR-TPROG sy-vline 
WA_PS2003_STR-VARIA sy-vline 
WA_PS2003_STR-TAGTY sy-vline 
WA_PS2003_STR-TPKLA sy-vline 
WA_PS2003_STR-VPERN sy-vline 
WA_PS2003_STR-AUFKZ sy-vline 
WA_PS2003_STR-BWGRL sy-vline 
WA_PS2003_STR-TRFGR sy-vline 
WA_PS2003_STR-TRFST sy-vline 
WA_PS2003_STR-PRAKN sy-vline 
WA_PS2003_STR-PRAKZ sy-vline 
WA_PS2003_STR-OTYPE sy-vline 
WA_PS2003_STR-PLANS sy-vline 
WA_PS2003_STR-EXBEL sy-vline 
WA_PS2003_STR-WAERS sy-vline 
WA_PS2003_STR-WTART sy-vline 
WA_PS2003_STR-TDLANGU sy-vline 
WA_PS2003_STR-TDSUBLA sy-vline 
WA_PS2003_STR-TDTYPE sy-vline 
WA_PS2003_STR-LOGSYS sy-vline 
WA_PS2003_STR-AWTYP sy-vline 
WA_PS2003_STR-AWREF sy-vline 
WA_PS2003_STR-AWORG sy-vline 
WA_PS2003_STR-NXDFL sy-vline 
WA_PS2003_STR-FTKLA sy-vline      INTO ld_text SEPARATED BY SPACE.

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