ABAP Select data from SAP table RPCP01Q0_PSTAB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RPCP01Q0_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 RPCP01Q0_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 RPCP01Q0_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_RPCP01Q0_PSTAB TYPE STANDARD TABLE OF RPCP01Q0_PSTAB,
      WA_RPCP01Q0_PSTAB TYPE RPCP01Q0_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: <RPCP01Q0_PSTAB> TYPE RPCP01Q0_PSTAB.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RPCP01Q0_PSTAB.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RPCP01Q0_PSTAB
  INTO TABLE IT_RPCP01Q0_PSTAB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPCP01Q0_PSTAB
*  INTO TABLE @DATA(IT_RPCP01Q0_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_RPCP01Q0_PSTAB INDEX 1 INTO DATA(WA_RPCP01Q0_PSTAB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RPCP01Q0_PSTAB ASSIGNING <RPCP01Q0_PSTAB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPCP01Q0_PSTAB>-PERNR = 1.
<RPCP01Q0_PSTAB>-ABNUM = 1.
<RPCP01Q0_PSTAB>-BRNUM = 1.
<RPCP01Q0_PSTAB>-PSFYR = 1.
<RPCP01Q0_PSTAB>-GEMNM = 1.

ENDLOOP.

LOOP AT IT_RPCP01Q0_PSTAB INTO WA_RPCP01Q0_PSTAB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPCP01Q0_PSTAB-TAXFN, sy-vline,
  WA_RPCP01Q0_PSTAB-GBDAT, sy-vline,
  WA_RPCP01Q0_PSTAB-NACHN, sy-vline,
  WA_RPCP01Q0_PSTAB-VORNA, sy-vline,
  WA_RPCP01Q0_PSTAB-MIDNM, sy-vline,
  WA_RPCP01Q0_PSTAB-EDITN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPCP01Q0_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_RPCP01Q0_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_RPCP01Q0_PSTAB INTO WA_RPCP01Q0_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_RPCP01Q0_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,
SEQNR TYPE STRING,
TOTAX TYPE STRING,
BETGR TYPE STRING,
BEFBT TYPE STRING,
BCDEP TYPE STRING,
BOTIN TYPE STRING,
ALCNT TYPE STRING,
UNCNT TYPE STRING,
UFWTY TYPE STRING,
LGTUN TYPE STRING,
BETWG TYPE STRING,
ALL01 TYPE STRING,
AMT01 TYPE STRING,
ALW02 TYPE STRING,
AMT02 TYPE STRING,
ALW03 TYPE STRING,
AMT03 TYPE STRING,
ALW04 TYPE STRING,
AMT04 TYPE STRING,
TOTAL TYPE STRING,
BETLA TYPE STRING,
BETLB TYPE STRING,
BETLD TYPE STRING,
BETLE TYPE STRING,
GSIGN TYPE STRING,
NEG_PMTS TYPE STRING,
AMEND TYPE STRING,
RESUP TYPE STRING,
FEXMT TYPE STRING,
LSPAT TYPE STRING,
DEUPA TYPE STRING,
LAND1 TYPE STRING,
FBTTYP TYPE STRING,
INCTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPCP01Q0_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_RPCP01Q0_PSTAB_STR-PERNR sy-vline 
WA_RPCP01Q0_PSTAB_STR-ABNUM sy-vline 
WA_RPCP01Q0_PSTAB_STR-BRNUM sy-vline 
WA_RPCP01Q0_PSTAB_STR-PSFYR sy-vline 
WA_RPCP01Q0_PSTAB_STR-GEMNM sy-vline 
WA_RPCP01Q0_PSTAB_STR-TAXFN sy-vline 
WA_RPCP01Q0_PSTAB_STR-GBDAT sy-vline 
WA_RPCP01Q0_PSTAB_STR-NACHN sy-vline 
WA_RPCP01Q0_PSTAB_STR-VORNA sy-vline 
WA_RPCP01Q0_PSTAB_STR-MIDNM sy-vline 
WA_RPCP01Q0_PSTAB_STR-EDITN sy-vline 
WA_RPCP01Q0_PSTAB_STR-ADDRESS sy-vline 
WA_RPCP01Q0_PSTAB_STR-LOCAT sy-vline 
WA_RPCP01Q0_PSTAB_STR-ORT01 sy-vline 
WA_RPCP01Q0_PSTAB_STR-STATE sy-vline 
WA_RPCP01Q0_PSTAB_STR-PSTLZ sy-vline 
WA_RPCP01Q0_PSTAB_STR-BEGDT sy-vline 
WA_RPCP01Q0_PSTAB_STR-ENDDT sy-vline 
WA_RPCP01Q0_PSTAB_STR-SEQNR sy-vline 
WA_RPCP01Q0_PSTAB_STR-TOTAX sy-vline 
WA_RPCP01Q0_PSTAB_STR-BETGR sy-vline 
WA_RPCP01Q0_PSTAB_STR-BEFBT sy-vline 
WA_RPCP01Q0_PSTAB_STR-BCDEP sy-vline 
WA_RPCP01Q0_PSTAB_STR-BOTIN sy-vline 
WA_RPCP01Q0_PSTAB_STR-ALCNT sy-vline 
WA_RPCP01Q0_PSTAB_STR-UNCNT sy-vline 
WA_RPCP01Q0_PSTAB_STR-UFWTY sy-vline 
WA_RPCP01Q0_PSTAB_STR-LGTUN sy-vline 
WA_RPCP01Q0_PSTAB_STR-BETWG sy-vline 
WA_RPCP01Q0_PSTAB_STR-ALL01 sy-vline 
WA_RPCP01Q0_PSTAB_STR-AMT01 sy-vline 
WA_RPCP01Q0_PSTAB_STR-ALW02 sy-vline 
WA_RPCP01Q0_PSTAB_STR-AMT02 sy-vline 
WA_RPCP01Q0_PSTAB_STR-ALW03 sy-vline 
WA_RPCP01Q0_PSTAB_STR-AMT03 sy-vline 
WA_RPCP01Q0_PSTAB_STR-ALW04 sy-vline 
WA_RPCP01Q0_PSTAB_STR-AMT04 sy-vline 
WA_RPCP01Q0_PSTAB_STR-TOTAL sy-vline 
WA_RPCP01Q0_PSTAB_STR-BETLA sy-vline 
WA_RPCP01Q0_PSTAB_STR-BETLB sy-vline 
WA_RPCP01Q0_PSTAB_STR-BETLD sy-vline 
WA_RPCP01Q0_PSTAB_STR-BETLE sy-vline 
WA_RPCP01Q0_PSTAB_STR-GSIGN sy-vline 
WA_RPCP01Q0_PSTAB_STR-NEG_PMTS sy-vline 
WA_RPCP01Q0_PSTAB_STR-AMEND sy-vline 
WA_RPCP01Q0_PSTAB_STR-RESUP sy-vline 
WA_RPCP01Q0_PSTAB_STR-FEXMT sy-vline 
WA_RPCP01Q0_PSTAB_STR-LSPAT sy-vline 
WA_RPCP01Q0_PSTAB_STR-DEUPA sy-vline 
WA_RPCP01Q0_PSTAB_STR-LAND1 sy-vline 
WA_RPCP01Q0_PSTAB_STR-FBTTYP sy-vline 
WA_RPCP01Q0_PSTAB_STR-INCTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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