ABAP Select data from SAP table SOBWNO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SOBWNO
*  INTO TABLE @DATA(IT_SOBWNO2).
*--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_SOBWNO INDEX 1 INTO DATA(WA_SOBWNO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SOBWNO>-DOC_ID = 1.
<SOBWNO>-DOC_TYPE = 1.
<SOBWNO>-SUBJECT = 1.
<SOBWNO>-USERID = 1.
<SOBWNO>-AUTHOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SOBWNO-SHORTDATE, sy-vline,
  WA_SOBWNO-DATE, sy-vline,
  WA_SOBWNO-TIME, sy-vline,
  WA_SOBWNO-TIMESTAMP, sy-vline,
  WA_SOBWNO-WI12HOURS, sy-vline,
  WA_SOBWNO-EXPRESS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SOBWNO 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_SOBWNO 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_SOBWNO INTO WA_SOBWNO.


*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 SXIDN, internal->external for field AUTHOR
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_SOBWNO-AUTHOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SOBWNO-AUTHOR.
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_SOBWNO_STR, 
DOC_ID TYPE STRING,
DOC_TYPE TYPE STRING,
SUBJECT TYPE STRING,
USERID TYPE STRING,
AUTHOR TYPE STRING,
SHORTDATE TYPE STRING,
DATE TYPE STRING,
TIME TYPE STRING,
TIMESTAMP TYPE STRING,
WI12HOURS TYPE STRING,
EXPRESS TYPE STRING,
READ TYPE STRING,
RECIPIENTS TYPE STRING,
PREVIEW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SOBWNO_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_SOBWNO_STR-DOC_ID sy-vline 
WA_SOBWNO_STR-DOC_TYPE sy-vline 
WA_SOBWNO_STR-SUBJECT sy-vline 
WA_SOBWNO_STR-USERID sy-vline 
WA_SOBWNO_STR-AUTHOR sy-vline 
WA_SOBWNO_STR-SHORTDATE sy-vline 
WA_SOBWNO_STR-DATE sy-vline 
WA_SOBWNO_STR-TIME sy-vline 
WA_SOBWNO_STR-TIMESTAMP sy-vline 
WA_SOBWNO_STR-WI12HOURS sy-vline 
WA_SOBWNO_STR-EXPRESS sy-vline 
WA_SOBWNO_STR-READ sy-vline 
WA_SOBWNO_STR-RECIPIENTS sy-vline 
WA_SOBWNO_STR-PREVIEW sy-vline      INTO ld_text SEPARATED BY SPACE.

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