ABAP Select data from SAP table PSV02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PSV02 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 PSV02. 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 PSV02 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_PSV02 TYPE STANDARD TABLE OF PSV02,
      WA_PSV02 TYPE PSV02,
      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: <PSV02> TYPE PSV02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PSV02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PSV02
  INTO TABLE IT_PSV02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSV02
*  INTO TABLE @DATA(IT_PSV022).
*--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_PSV02 INDEX 1 INTO DATA(WA_PSV022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PSV02 ASSIGNING <PSV02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSV02>-SVF01 = 1.
<PSV02>-SVF02 = 1.
<PSV02>-SVF03 = 1.
<PSV02>-SVF04 = 1.
<PSV02>-SVF05 = 1.

ENDLOOP.

LOOP AT IT_PSV02 INTO WA_PSV02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSV02-SVF06, sy-vline,
  WA_PSV02-SVF07, sy-vline,
  WA_PSV02-SVF08, sy-vline,
  WA_PSV02-SVF09, sy-vline,
  WA_PSV02-SVF10, sy-vline,
  WA_PSV02-SVF11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSV02 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_PSV02 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_PSV02 INTO WA_PSV02.


*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_PSV02_STR, 
SVF01 TYPE STRING,
SVF02 TYPE STRING,
SVF03 TYPE STRING,
SVF04 TYPE STRING,
SVF05 TYPE STRING,
SVF06 TYPE STRING,
SVF07 TYPE STRING,
SVF08 TYPE STRING,
SVF09 TYPE STRING,
SVF10 TYPE STRING,
SVF11 TYPE STRING,
SVF12 TYPE STRING,
SVF13 TYPE STRING,
SVF14 TYPE STRING,
SVF15 TYPE STRING,
SVF16 TYPE STRING,
SVF17 TYPE STRING,
SVF18 TYPE STRING,
SVF19 TYPE STRING,
SVF20 TYPE STRING,
SVF21 TYPE STRING,
SVF22 TYPE STRING,
SVF23 TYPE STRING,
SVF24 TYPE STRING,
SVF25 TYPE STRING,
SVF26 TYPE STRING,
SVF27 TYPE STRING,
SVF28 TYPE STRING,
SVF29 TYPE STRING,
SVF30 TYPE STRING,
SVF31 TYPE STRING,
SVF32 TYPE STRING,
SVF33 TYPE STRING,
SVF34 TYPE STRING,
SVF35 TYPE STRING,
SVF36 TYPE STRING,
SVF37 TYPE STRING,
SVF38 TYPE STRING,
SVF39 TYPE STRING,
SVF40 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSV02_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_PSV02_STR-SVF01 sy-vline 
WA_PSV02_STR-SVF02 sy-vline 
WA_PSV02_STR-SVF03 sy-vline 
WA_PSV02_STR-SVF04 sy-vline 
WA_PSV02_STR-SVF05 sy-vline 
WA_PSV02_STR-SVF06 sy-vline 
WA_PSV02_STR-SVF07 sy-vline 
WA_PSV02_STR-SVF08 sy-vline 
WA_PSV02_STR-SVF09 sy-vline 
WA_PSV02_STR-SVF10 sy-vline 
WA_PSV02_STR-SVF11 sy-vline 
WA_PSV02_STR-SVF12 sy-vline 
WA_PSV02_STR-SVF13 sy-vline 
WA_PSV02_STR-SVF14 sy-vline 
WA_PSV02_STR-SVF15 sy-vline 
WA_PSV02_STR-SVF16 sy-vline 
WA_PSV02_STR-SVF17 sy-vline 
WA_PSV02_STR-SVF18 sy-vline 
WA_PSV02_STR-SVF19 sy-vline 
WA_PSV02_STR-SVF20 sy-vline 
WA_PSV02_STR-SVF21 sy-vline 
WA_PSV02_STR-SVF22 sy-vline 
WA_PSV02_STR-SVF23 sy-vline 
WA_PSV02_STR-SVF24 sy-vline 
WA_PSV02_STR-SVF25 sy-vline 
WA_PSV02_STR-SVF26 sy-vline 
WA_PSV02_STR-SVF27 sy-vline 
WA_PSV02_STR-SVF28 sy-vline 
WA_PSV02_STR-SVF29 sy-vline 
WA_PSV02_STR-SVF30 sy-vline 
WA_PSV02_STR-SVF31 sy-vline 
WA_PSV02_STR-SVF32 sy-vline 
WA_PSV02_STR-SVF33 sy-vline 
WA_PSV02_STR-SVF34 sy-vline 
WA_PSV02_STR-SVF35 sy-vline 
WA_PSV02_STR-SVF36 sy-vline 
WA_PSV02_STR-SVF37 sy-vline 
WA_PSV02_STR-SVF38 sy-vline 
WA_PSV02_STR-SVF39 sy-vline 
WA_PSV02_STR-SVF40 sy-vline      INTO ld_text SEPARATED BY SPACE.

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