ABAP Select data from SAP table RPCPFE01Q0_PSTAB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RPCPFE01Q0_PSTAB 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 RPCPFE01Q0_PSTAB. 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 RPCPFE01Q0_PSTAB 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_RPCPFE01Q0_PSTAB TYPE STANDARD TABLE OF RPCPFE01Q0_PSTAB,
      WA_RPCPFE01Q0_PSTAB TYPE RPCPFE01Q0_PSTAB,
      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: <RPCPFE01Q0_PSTAB> TYPE RPCPFE01Q0_PSTAB.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RPCPFE01Q0_PSTAB.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RPCPFE01Q0_PSTAB
  INTO TABLE IT_RPCPFE01Q0_PSTAB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPCPFE01Q0_PSTAB
*  INTO TABLE @DATA(IT_RPCPFE01Q0_PSTAB2).
*--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_RPCPFE01Q0_PSTAB INDEX 1 INTO DATA(WA_RPCPFE01Q0_PSTAB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RPCPFE01Q0_PSTAB ASSIGNING <RPCPFE01Q0_PSTAB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPCPFE01Q0_PSTAB>-PERNR = 1.
<RPCPFE01Q0_PSTAB>-ABNUM = 1.
<RPCPFE01Q0_PSTAB>-BRNUM = 1.
<RPCPFE01Q0_PSTAB>-PSFYR = 1.
<RPCPFE01Q0_PSTAB>-GEMNM = 1.

ENDLOOP.

LOOP AT IT_RPCPFE01Q0_PSTAB INTO WA_RPCPFE01Q0_PSTAB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPCPFE01Q0_PSTAB-TAXFN, sy-vline,
  WA_RPCPFE01Q0_PSTAB-GBDAT, sy-vline,
  WA_RPCPFE01Q0_PSTAB-NACHN, sy-vline,
  WA_RPCPFE01Q0_PSTAB-VORNA, sy-vline,
  WA_RPCPFE01Q0_PSTAB-MIDNM, sy-vline,
  WA_RPCPFE01Q0_PSTAB-EDITN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPCPFE01Q0_PSTAB 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_RPCPFE01Q0_PSTAB 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_RPCPFE01Q0_PSTAB INTO WA_RPCPFE01Q0_PSTAB.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RPCPFE01Q0_PSTAB_STR, 
PERNR TYPE STRING,
ABNUM TYPE STRING,
BRNUM TYPE STRING,
PSFYR TYPE STRING,
GEMNM TYPE STRING,
TAXFN TYPE STRING,
GBDAT TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
MIDNM TYPE STRING,
EDITN TYPE STRING,
ADDRESS TYPE STRING,
LOCAT TYPE STRING,
ORT01 TYPE STRING,
STATE TYPE STRING,
PSTLZ TYPE STRING,
BEGDT TYPE STRING,
ENDDT TYPE STRING,
PYTAX TYPE STRING,
PYGRO TYPE STRING,
GPTPS TYPE STRING,
PYFTAX TYPE STRING,
PYFBT TYPE STRING,
PYSUP TYPE STRING,
PYUNI TYPE STRING,
PYWPG TYPE STRING,
PYLSA TYPE STRING,
PYLAT TYPE STRING,
PYLSD TYPE STRING,
PYLSE TYPE STRING,
UNCNT TYPE STRING,
WPCNT TYPE STRING,
GSIGN TYPE STRING,
AMEND TYPE STRING,
LAND1 TYPE STRING,
FBTTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPCPFE01Q0_PSTAB_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_RPCPFE01Q0_PSTAB_STR-PERNR sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-ABNUM sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-BRNUM sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PSFYR sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-GEMNM sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-TAXFN sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-GBDAT sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-NACHN sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-VORNA sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-MIDNM sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-EDITN sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-ADDRESS sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-LOCAT sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-ORT01 sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-STATE sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PSTLZ sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-BEGDT sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-ENDDT sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PYTAX sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PYGRO sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-GPTPS sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PYFTAX sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PYFBT sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PYSUP sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PYUNI sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PYWPG sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PYLSA sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PYLAT sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PYLSD sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-PYLSE sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-UNCNT sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-WPCNT sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-GSIGN sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-AMEND sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-LAND1 sy-vline 
WA_RPCPFE01Q0_PSTAB_STR-FBTTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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