ABAP Select data from SAP table PRU_PACK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRU_PACK
*  INTO TABLE @DATA(IT_PRU_PACK2).
*--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_PRU_PACK INDEX 1 INTO DATA(WA_PRU_PACK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRU_PACK>-NUMPACK = 1.
<PRU_PACK>-DOCUMENTS = 1.
<PRU_PACK>-KNAAM = 1.
<PRU_PACK>-LNAAM = 1.
<PRU_PACK>-ANSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRU_PACK-KPP00, sy-vline,
  WA_PRU_PACK-REGNO, sy-vline,
  WA_PRU_PACK-KDOKP, sy-vline,
  WA_PRU_PACK-DOL_RUK, sy-vline,
  WA_PRU_PACK-RAS_POD, sy-vline,
  WA_PRU_PACK-DOL_ISP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRU_PACK 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_PRU_PACK 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_PRU_PACK INTO WA_PRU_PACK.


*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_PRU_PACK_STR, 
NUMPACK TYPE STRING,
DOCUMENTS TYPE STRING,
KNAAM TYPE STRING,
LNAAM TYPE STRING,
ANSNR TYPE STRING,
KPP00 TYPE STRING,
REGNO TYPE STRING,
KDOKP TYPE STRING,
DOL_RUK TYPE STRING,
RAS_POD TYPE STRING,
DOL_ISP TYPE STRING,
RAS_ISP TYPE STRING,
DATE_ZAP TYPE STRING,
DATE_POD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRU_PACK_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_PRU_PACK_STR-NUMPACK sy-vline 
WA_PRU_PACK_STR-DOCUMENTS sy-vline 
WA_PRU_PACK_STR-KNAAM sy-vline 
WA_PRU_PACK_STR-LNAAM sy-vline 
WA_PRU_PACK_STR-ANSNR sy-vline 
WA_PRU_PACK_STR-KPP00 sy-vline 
WA_PRU_PACK_STR-REGNO sy-vline 
WA_PRU_PACK_STR-KDOKP sy-vline 
WA_PRU_PACK_STR-DOL_RUK sy-vline 
WA_PRU_PACK_STR-RAS_POD sy-vline 
WA_PRU_PACK_STR-DOL_ISP sy-vline 
WA_PRU_PACK_STR-RAS_ISP sy-vline 
WA_PRU_PACK_STR-DATE_ZAP sy-vline 
WA_PRU_PACK_STR-DATE_POD sy-vline      INTO ld_text SEPARATED BY SPACE.

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