ABAP Select data from SAP table PRUSZVK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRUSZVK
*  INTO TABLE @DATA(IT_PRUSZVK2).
*--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_PRUSZVK INDEX 1 INTO DATA(WA_PRUSZVK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRUSZVK>-TERCO = 1.
<PRUSZVK>-TERKO = 1.
<PRUSZVK>-SPECC = 1.
<PRUSZVK>-SPECP = 1.
<PRUSZVK>-COUSE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRUSZVK-COSP0, sy-vline,
  WA_PRUSZVK-COSP1, sy-vline,
  WA_PRUSZVK-COSP2, sy-vline,
  WA_PRUSZVK-COSEA, sy-vline,
  WA_PRUSZVK-LONSE, sy-vline,
  WA_PRUSZVK-LOSP1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRUSZVK 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_PRUSZVK 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_PRUSZVK INTO WA_PRUSZVK.


*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_PRUSZVK_STR, 
TERCO TYPE STRING,
TERKO TYPE STRING,
SPECC TYPE STRING,
SPECP TYPE STRING,
COUSE TYPE STRING,
COSP0 TYPE STRING,
COSP1 TYPE STRING,
COSP2 TYPE STRING,
COSEA TYPE STRING,
LONSE TYPE STRING,
LOSP1 TYPE STRING,
LOSP2 TYPE STRING,
LOSP3 TYPE STRING,
BEDAT TYPE STRING,
ENDAT TYPE STRING,
POSIT TYPE STRING,
TYPRE TYPE STRING,
IDMRE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRUSZVK_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_PRUSZVK_STR-TERCO sy-vline 
WA_PRUSZVK_STR-TERKO sy-vline 
WA_PRUSZVK_STR-SPECC sy-vline 
WA_PRUSZVK_STR-SPECP sy-vline 
WA_PRUSZVK_STR-COUSE sy-vline 
WA_PRUSZVK_STR-COSP0 sy-vline 
WA_PRUSZVK_STR-COSP1 sy-vline 
WA_PRUSZVK_STR-COSP2 sy-vline 
WA_PRUSZVK_STR-COSEA sy-vline 
WA_PRUSZVK_STR-LONSE sy-vline 
WA_PRUSZVK_STR-LOSP1 sy-vline 
WA_PRUSZVK_STR-LOSP2 sy-vline 
WA_PRUSZVK_STR-LOSP3 sy-vline 
WA_PRUSZVK_STR-BEDAT sy-vline 
WA_PRUSZVK_STR-ENDAT sy-vline 
WA_PRUSZVK_STR-POSIT sy-vline 
WA_PRUSZVK_STR-TYPRE sy-vline 
WA_PRUSZVK_STR-IDMRE sy-vline      INTO ld_text SEPARATED BY SPACE.

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