ABAP Select data from SAP table SDMEOATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SDMEOATTR
*  INTO TABLE @DATA(IT_SDMEOATTR2).
*--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_SDMEOATTR INDEX 1 INTO DATA(WA_SDMEOATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SDMEOATTR>-CLSNAME = 1.
<SDMEOATTR>-VERSION = 1.
<SDMEOATTR>-ATTRNAME = 1.
<SDMEOATTR>-EDITORDER = 1.
<SDMEOATTR>-KEYFLG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SDMEOATTR-PERSFLAG, sy-vline,
  WA_SDMEOATTR-TABFIELD, sy-vline,
  WA_SDMEOATTR-REFTYPE, sy-vline,
  WA_SDMEOATTR-REFCLASS, sy-vline,
  WA_SDMEOATTR-REFATTR, sy-vline,
  WA_SDMEOATTR-CHECKFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SDMEOATTR 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_SDMEOATTR 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_SDMEOATTR INTO WA_SDMEOATTR.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SDMEOATTR-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SDMEOATTR-LANGU.
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_SDMEOATTR_STR, 
CLSNAME TYPE STRING,
VERSION TYPE STRING,
ATTRNAME TYPE STRING,
EDITORDER TYPE STRING,
KEYFLG TYPE STRING,
PERSFLAG TYPE STRING,
TABFIELD TYPE STRING,
REFTYPE TYPE STRING,
REFCLASS TYPE STRING,
REFATTR TYPE STRING,
CHECKFLG TYPE STRING,
CHECKMTHD TYPE STRING,
VIRTATTR TYPE STRING,
READONLY TYPE STRING,
LANGU TYPE STRING,
DESCR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SDMEOATTR_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_SDMEOATTR_STR-CLSNAME sy-vline 
WA_SDMEOATTR_STR-VERSION sy-vline 
WA_SDMEOATTR_STR-ATTRNAME sy-vline 
WA_SDMEOATTR_STR-EDITORDER sy-vline 
WA_SDMEOATTR_STR-KEYFLG sy-vline 
WA_SDMEOATTR_STR-PERSFLAG sy-vline 
WA_SDMEOATTR_STR-TABFIELD sy-vline 
WA_SDMEOATTR_STR-REFTYPE sy-vline 
WA_SDMEOATTR_STR-REFCLASS sy-vline 
WA_SDMEOATTR_STR-REFATTR sy-vline 
WA_SDMEOATTR_STR-CHECKFLG sy-vline 
WA_SDMEOATTR_STR-CHECKMTHD sy-vline 
WA_SDMEOATTR_STR-VIRTATTR sy-vline 
WA_SDMEOATTR_STR-READONLY sy-vline 
WA_SDMEOATTR_STR-LANGU sy-vline 
WA_SDMEOATTR_STR-DESCR sy-vline      INTO ld_text SEPARATED BY SPACE.

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