ABAP Select data from SAP table PS_FVKPG into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS_FVKPG
*  INTO TABLE @DATA(IT_PS_FVKPG2).
*--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_PS_FVKPG INDEX 1 INTO DATA(WA_PS_FVKPG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS_FVKPG>-CLIENT = 1.
<PS_FVKPG>-DFVAL = 1.
<PS_FVKPG>-VKONT = 1.
<PS_FVKPG>-GPART = 1.
<PS_FVKPG>-VKTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS_FVKPG-BEGRU, sy-vline,
  WA_PS_FVKPG-STDBK, sy-vline,
  WA_PS_FVKPG-ADDRNUMBER, sy-vline,
  WA_PS_FVKPG-NATION, sy-vline,
  WA_PS_FVKPG-MC_NAME1, sy-vline,
  WA_PS_FVKPG-MC_NAME2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS_FVKPG 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_PS_FVKPG 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_PS_FVKPG INTO WA_PS_FVKPG.


*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 VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PS_FVKPG-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PS_FVKPG-VKONT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field ADDRNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PS_FVKPG-ADDRNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PS_FVKPG-ADDRNUMBER.
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_PS_FVKPG_STR, 
CLIENT TYPE STRING,
DFVAL TYPE STRING,
VKONT TYPE STRING,
GPART TYPE STRING,
VKTYP TYPE STRING,
BEGRU TYPE STRING,
STDBK TYPE STRING,
ADDRNUMBER TYPE STRING,
NATION TYPE STRING,
MC_NAME1 TYPE STRING,
MC_NAME2 TYPE STRING,
CITY1 TYPE STRING,
POST_CODE1 TYPE STRING,
STREET TYPE STRING,
HOUSE_NUM1 TYPE STRING,
COUNTRY TYPE STRING,
TEL_NUMBER TYPE STRING,
TEL_EXTENS TYPE STRING,
PO_BOX TYPE STRING,
RLTYP TYPE STRING,
AUGRP TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS_FVKPG_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_PS_FVKPG_STR-CLIENT sy-vline 
WA_PS_FVKPG_STR-DFVAL sy-vline 
WA_PS_FVKPG_STR-VKONT sy-vline 
WA_PS_FVKPG_STR-GPART sy-vline 
WA_PS_FVKPG_STR-VKTYP sy-vline 
WA_PS_FVKPG_STR-BEGRU sy-vline 
WA_PS_FVKPG_STR-STDBK sy-vline 
WA_PS_FVKPG_STR-ADDRNUMBER sy-vline 
WA_PS_FVKPG_STR-NATION sy-vline 
WA_PS_FVKPG_STR-MC_NAME1 sy-vline 
WA_PS_FVKPG_STR-MC_NAME2 sy-vline 
WA_PS_FVKPG_STR-CITY1 sy-vline 
WA_PS_FVKPG_STR-POST_CODE1 sy-vline 
WA_PS_FVKPG_STR-STREET sy-vline 
WA_PS_FVKPG_STR-HOUSE_NUM1 sy-vline 
WA_PS_FVKPG_STR-COUNTRY sy-vline 
WA_PS_FVKPG_STR-TEL_NUMBER sy-vline 
WA_PS_FVKPG_STR-TEL_EXTENS sy-vline 
WA_PS_FVKPG_STR-PO_BOX sy-vline 
WA_PS_FVKPG_STR-RLTYP sy-vline 
WA_PS_FVKPG_STR-AUGRP sy-vline 
WA_PS_FVKPG_STR-VALID_FROM sy-vline 
WA_PS_FVKPG_STR-VALID_TO sy-vline      INTO ld_text SEPARATED BY SPACE.

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