ABAP Select data from SAP table PSPAR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PSPAR 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 PSPAR. 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 PSPAR 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_PSPAR TYPE STANDARD TABLE OF PSPAR,
      WA_PSPAR TYPE PSPAR,
      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: <PSPAR> TYPE PSPAR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSPAR
*  INTO TABLE @DATA(IT_PSPAR2).
*--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_PSPAR INDEX 1 INTO DATA(WA_PSPAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSPAR>-PERNR = 1.
<PSPAR>-INFTY = 1.
<PSPAR>-SUBTY = 1.
<PSPAR>-OBJPS = 1.
<PSPAR>-ITTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSPAR-ITBLD, sy-vline,
  WA_PSPAR-BUKRS, sy-vline,
  WA_PSPAR-WERKS, sy-vline,
  WA_PSPAR-PERSG, sy-vline,
  WA_PSPAR-PERSK, sy-vline,
  WA_PSPAR-MASSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSPAR 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_PSPAR 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_PSPAR INTO WA_PSPAR.


*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_PSPAR-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSPAR-LOGSYS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PIDEX, internal->external for field PERSONID_EXT
CALL FUNCTION 'CONVERSION_EXIT_PIDEX_OUTPUT'
  EXPORTING
    input =                      WA_PSPAR-PERSONID_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSPAR-PERSONID_EXT.
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_PSPAR_STR, 
PERNR TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
ITTXT TYPE STRING,
ITBLD TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
MASSN TYPE STRING,
TCLAS TYPE STRING,
AKTYP TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
BEGST TYPE STRING,
ENDST TYPE STRING,
SPRPS TYPE STRING,
SEQNR TYPE STRING,
ASKEY TYPE STRING,
BEGUZ TYPE STRING,
ENDUZ TYPE STRING,
ACTIO TYPE STRING,
ENQUE TYPE STRING,
REPNA TYPE STRING,
RCODE TYPE STRING,
ITCHN TYPE STRING,
DMSNR TYPE STRING,
SUPDG TYPE STRING,
MSGST TYPE STRING,
MSGNR TYPE STRING,
ZDLIM TYPE STRING,
VINFT TYPE STRING,
NPRNR TYPE STRING,
NFUNC TYPE STRING,
NINFT TYPE STRING,
NSUBT TYPE STRING,
NOBJP TYPE STRING,
NBEGD TYPE STRING,
NENDD TYPE STRING,
NITBL TYPE STRING,
NEIND TYPE STRING,
NAUSD TYPE STRING,
ANZIN TYPE STRING,
RFPNR TYPE STRING,
BLDTP TYPE STRING,
BINPT TYPE STRING,
ONENQ TYPE STRING,
CBWFL TYPE STRING,
DOKAR TYPE STRING,
PLANS TYPE STRING,
LAND1 TYPE STRING,
LOGSYS TYPE STRING,
AWTYP TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
PPVFL TYPE STRING,
PBPFL TYPE STRING,
MASSG TYPE STRING,
NAVFL TYPE STRING,
NAVID TYPE STRING,
CP_ID TYPE STRING,
NEWITF TYPE STRING,
LISTALL TYPE STRING,
PERSONID_EXT TYPE STRING,
DABCL TYPE STRING,
TMP_END TYPE STRING,
ABGRD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSPAR_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_PSPAR_STR-PERNR sy-vline 
WA_PSPAR_STR-INFTY sy-vline 
WA_PSPAR_STR-SUBTY sy-vline 
WA_PSPAR_STR-OBJPS sy-vline 
WA_PSPAR_STR-ITTXT sy-vline 
WA_PSPAR_STR-ITBLD sy-vline 
WA_PSPAR_STR-BUKRS sy-vline 
WA_PSPAR_STR-WERKS sy-vline 
WA_PSPAR_STR-PERSG sy-vline 
WA_PSPAR_STR-PERSK sy-vline 
WA_PSPAR_STR-MASSN sy-vline 
WA_PSPAR_STR-TCLAS sy-vline 
WA_PSPAR_STR-AKTYP sy-vline 
WA_PSPAR_STR-BEGDA sy-vline 
WA_PSPAR_STR-ENDDA sy-vline 
WA_PSPAR_STR-BEGST sy-vline 
WA_PSPAR_STR-ENDST sy-vline 
WA_PSPAR_STR-SPRPS sy-vline 
WA_PSPAR_STR-SEQNR sy-vline 
WA_PSPAR_STR-ASKEY sy-vline 
WA_PSPAR_STR-BEGUZ sy-vline 
WA_PSPAR_STR-ENDUZ sy-vline 
WA_PSPAR_STR-ACTIO sy-vline 
WA_PSPAR_STR-ENQUE sy-vline 
WA_PSPAR_STR-REPNA sy-vline 
WA_PSPAR_STR-RCODE sy-vline 
WA_PSPAR_STR-ITCHN sy-vline 
WA_PSPAR_STR-DMSNR sy-vline 
WA_PSPAR_STR-SUPDG sy-vline 
WA_PSPAR_STR-MSGST sy-vline 
WA_PSPAR_STR-MSGNR sy-vline 
WA_PSPAR_STR-ZDLIM sy-vline 
WA_PSPAR_STR-VINFT sy-vline 
WA_PSPAR_STR-NPRNR sy-vline 
WA_PSPAR_STR-NFUNC sy-vline 
WA_PSPAR_STR-NINFT sy-vline 
WA_PSPAR_STR-NSUBT sy-vline 
WA_PSPAR_STR-NOBJP sy-vline 
WA_PSPAR_STR-NBEGD sy-vline 
WA_PSPAR_STR-NENDD sy-vline 
WA_PSPAR_STR-NITBL sy-vline 
WA_PSPAR_STR-NEIND sy-vline 
WA_PSPAR_STR-NAUSD sy-vline 
WA_PSPAR_STR-ANZIN sy-vline 
WA_PSPAR_STR-RFPNR sy-vline 
WA_PSPAR_STR-BLDTP sy-vline 
WA_PSPAR_STR-BINPT sy-vline 
WA_PSPAR_STR-ONENQ sy-vline 
WA_PSPAR_STR-CBWFL sy-vline 
WA_PSPAR_STR-DOKAR sy-vline 
WA_PSPAR_STR-PLANS sy-vline 
WA_PSPAR_STR-LAND1 sy-vline 
WA_PSPAR_STR-LOGSYS sy-vline 
WA_PSPAR_STR-AWTYP sy-vline 
WA_PSPAR_STR-AWREF sy-vline 
WA_PSPAR_STR-AWORG sy-vline 
WA_PSPAR_STR-PPVFL sy-vline 
WA_PSPAR_STR-PBPFL sy-vline 
WA_PSPAR_STR-MASSG sy-vline 
WA_PSPAR_STR-NAVFL sy-vline 
WA_PSPAR_STR-NAVID sy-vline 
WA_PSPAR_STR-CP_ID sy-vline 
WA_PSPAR_STR-NEWITF sy-vline 
WA_PSPAR_STR-LISTALL sy-vline 
WA_PSPAR_STR-PERSONID_EXT sy-vline 
WA_PSPAR_STR-DABCL sy-vline 
WA_PSPAR_STR-TMP_END sy-vline 
WA_PSPAR_STR-ABGRD sy-vline      INTO ld_text SEPARATED BY SPACE.

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