ABAP Select data from SAP table T7RUPACK into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7RUPACK 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 T7RUPACK. 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 T7RUPACK 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_T7RUPACK TYPE STANDARD TABLE OF T7RUPACK,
      WA_T7RUPACK TYPE T7RUPACK,
      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: <T7RUPACK> TYPE T7RUPACK.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7RUPACK.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7RUPACK
  INTO TABLE IT_T7RUPACK.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7RUPACK
*  INTO TABLE @DATA(IT_T7RUPACK2).
*--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_T7RUPACK INDEX 1 INTO DATA(WA_T7RUPACK2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7RUPACK ASSIGNING <T7RUPACK>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7RUPACK>-MANDT = 1.
<T7RUPACK>-ID = 1.
<T7RUPACK>-NUM = 1.
<T7RUPACK>-SCHEK = 1.
<T7RUPACK>-SSEND = 1.

ENDLOOP.

LOOP AT IT_T7RUPACK INTO WA_T7RUPACK.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7RUPACK-SCHAN, sy-vline,
  WA_T7RUPACK-FILE, sy-vline,
  WA_T7RUPACK-SUM1, sy-vline,
  WA_T7RUPACK-SUM2, sy-vline,
  WA_T7RUPACK-SUM3, sy-vline,
  WA_T7RUPACK-PKCOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7RUPACK 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_T7RUPACK 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_T7RUPACK INTO WA_T7RUPACK.


*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_T7RUPACK_STR, 
MANDT TYPE STRING,
ID TYPE STRING,
NUM TYPE STRING,
SCHEK TYPE STRING,
SSEND TYPE STRING,
SCHAN TYPE STRING,
FILE TYPE STRING,
SUM1 TYPE STRING,
SUM2 TYPE STRING,
SUM3 TYPE STRING,
PKCOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7RUPACK_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_T7RUPACK_STR-MANDT sy-vline 
WA_T7RUPACK_STR-ID sy-vline 
WA_T7RUPACK_STR-NUM sy-vline 
WA_T7RUPACK_STR-SCHEK sy-vline 
WA_T7RUPACK_STR-SSEND sy-vline 
WA_T7RUPACK_STR-SCHAN sy-vline 
WA_T7RUPACK_STR-FILE sy-vline 
WA_T7RUPACK_STR-SUM1 sy-vline 
WA_T7RUPACK_STR-SUM2 sy-vline 
WA_T7RUPACK_STR-SUM3 sy-vline 
WA_T7RUPACK_STR-PKCOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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