ABAP Select data from SAP table T681 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP T681 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 T681. 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 T681 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_T681 TYPE STANDARD TABLE OF T681,
      WA_T681 TYPE T681,
      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: <T681> TYPE T681.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T681.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T681
  INTO TABLE IT_T681.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T681
*  INTO TABLE @DATA(IT_T6812).
*--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_T681 INDEX 1 INTO DATA(WA_T6812).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T681 ASSIGNING <T681>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T681>-KVEWE = 1.
<T681>-KOTABNR = 1.
<T681>-KAPPL = 1.
<T681>-KOTAB = 1.
<T681>-SETYP = 1.

ENDLOOP.

LOOP AT IT_T681 INTO WA_T681.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T681-KSDAT, sy-vline,
  WA_T681-GESTA, sy-vline,
  WA_T681-IDXAK, sy-vline,
  WA_T681-IDXBD, sy-vline,
  WA_T681-SAPSY, sy-vline,
  WA_T681-SYSID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T681 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_T681 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_T681 INTO WA_T681.


*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.

*Conversion exit KOTAB, internal->external for field KOTABNR
CALL FUNCTION 'CONVERSION_EXIT_KOTAB_OUTPUT'
  EXPORTING
    input =                      WA_T681-KOTABNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T681-KOTABNR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_T681_STR, 
KVEWE TYPE STRING,
KOTABNR TYPE STRING,
KAPPL TYPE STRING,
KOTAB TYPE STRING,
SETYP TYPE STRING,
KSDAT TYPE STRING,
GESTA TYPE STRING,
IDXAK TYPE STRING,
IDXBD TYPE STRING,
SAPSY TYPE STRING,
SYSID TYPE STRING,
SAPRL TYPE STRING,
NUMERICAL TYPE STRING,
ABAP_LANGUAGE_VERSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T681_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_T681_STR-KVEWE sy-vline 
WA_T681_STR-KOTABNR sy-vline 
WA_T681_STR-KAPPL sy-vline 
WA_T681_STR-KOTAB sy-vline 
WA_T681_STR-SETYP sy-vline 
WA_T681_STR-KSDAT sy-vline 
WA_T681_STR-GESTA sy-vline 
WA_T681_STR-IDXAK sy-vline 
WA_T681_STR-IDXBD sy-vline 
WA_T681_STR-SAPSY sy-vline 
WA_T681_STR-SYSID sy-vline 
WA_T681_STR-SAPRL sy-vline 
WA_T681_STR-NUMERICAL sy-vline 
WA_T681_STR-ABAP_LANGUAGE_VERSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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