ABAP Select data from SAP table T7RUT1_EXT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7RUT1_EXT 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 T7RUT1_EXT. 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 T7RUT1_EXT 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_T7RUT1_EXT TYPE STANDARD TABLE OF T7RUT1_EXT,
      WA_T7RUT1_EXT TYPE T7RUT1_EXT,
      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: <T7RUT1_EXT> TYPE T7RUT1_EXT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7RUT1_EXT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7RUT1_EXT
  INTO TABLE IT_T7RUT1_EXT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7RUT1_EXT
*  INTO TABLE @DATA(IT_T7RUT1_EXT2).
*--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_T7RUT1_EXT INDEX 1 INTO DATA(WA_T7RUT1_EXT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7RUT1_EXT ASSIGNING <T7RUT1_EXT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7RUT1_EXT>-MANDT = 1.
<T7RUT1_EXT>-TAXNUM = 1.
<T7RUT1_EXT>-ENDDA = 1.
<T7RUT1_EXT>-LAND = 1.
<T7RUT1_EXT>-PRIRR = 1.

ENDLOOP.

LOOP AT IT_T7RUT1_EXT INTO WA_T7RUT1_EXT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7RUT1_EXT-TXSIN, sy-vline,
  WA_T7RUT1_EXT-CYLKE, sy-vline,
  WA_T7RUT1_EXT-WTSEP, sy-vline,
  WA_T7RUT1_EXT-LGARTB, sy-vline,
  WA_T7RUT1_EXT-ELGA01, sy-vline,
  WA_T7RUT1_EXT-ELGA02, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7RUT1_EXT 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_T7RUT1_EXT 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_T7RUT1_EXT INTO WA_T7RUT1_EXT.


*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_T7RUT1_EXT_STR, 
MANDT TYPE STRING,
TAXNUM TYPE STRING,
ENDDA TYPE STRING,
LAND TYPE STRING,
PRIRR TYPE STRING,
TXSIN TYPE STRING,
CYLKE TYPE STRING,
WTSEP TYPE STRING,
LGARTB TYPE STRING,
ELGA01 TYPE STRING,
ELGA02 TYPE STRING,
ELGA03 TYPE STRING,
ELGA04 TYPE STRING,
ELGA05 TYPE STRING,
ELGA06 TYPE STRING,
ELGA07 TYPE STRING,
ELGA08 TYPE STRING,
ELGA09 TYPE STRING,
ELGA10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7RUT1_EXT_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_T7RUT1_EXT_STR-MANDT sy-vline 
WA_T7RUT1_EXT_STR-TAXNUM sy-vline 
WA_T7RUT1_EXT_STR-ENDDA sy-vline 
WA_T7RUT1_EXT_STR-LAND sy-vline 
WA_T7RUT1_EXT_STR-PRIRR sy-vline 
WA_T7RUT1_EXT_STR-TXSIN sy-vline 
WA_T7RUT1_EXT_STR-CYLKE sy-vline 
WA_T7RUT1_EXT_STR-WTSEP sy-vline 
WA_T7RUT1_EXT_STR-LGARTB sy-vline 
WA_T7RUT1_EXT_STR-ELGA01 sy-vline 
WA_T7RUT1_EXT_STR-ELGA02 sy-vline 
WA_T7RUT1_EXT_STR-ELGA03 sy-vline 
WA_T7RUT1_EXT_STR-ELGA04 sy-vline 
WA_T7RUT1_EXT_STR-ELGA05 sy-vline 
WA_T7RUT1_EXT_STR-ELGA06 sy-vline 
WA_T7RUT1_EXT_STR-ELGA07 sy-vline 
WA_T7RUT1_EXT_STR-ELGA08 sy-vline 
WA_T7RUT1_EXT_STR-ELGA09 sy-vline 
WA_T7RUT1_EXT_STR-ELGA10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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