ABAP Select data from SAP table SEOCLASSDF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SEOCLASSDF
*  INTO TABLE @DATA(IT_SEOCLASSDF2).
*--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_SEOCLASSDF INDEX 1 INTO DATA(WA_SEOCLASSDF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SEOCLASSDF>-CLSNAME = 1.
<SEOCLASSDF>-VERSION = 1.
<SEOCLASSDF>-CATEGORY = 1.
<SEOCLASSDF>-EXPOSURE = 1.
<SEOCLASSDF>-STATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SEOCLASSDF-RELEASE, sy-vline,
  WA_SEOCLASSDF-AUTHOR, sy-vline,
  WA_SEOCLASSDF-CREATEDON, sy-vline,
  WA_SEOCLASSDF-CHANGEDBY, sy-vline,
  WA_SEOCLASSDF-CHANGEDON, sy-vline,
  WA_SEOCLASSDF-CHGDANYBY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SEOCLASSDF 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_SEOCLASSDF 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_SEOCLASSDF INTO WA_SEOCLASSDF.


*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_SEOCLASSDF_STR, 
CLSNAME TYPE STRING,
VERSION TYPE STRING,
CATEGORY TYPE STRING,
EXPOSURE TYPE STRING,
STATE TYPE STRING,
RELEASE TYPE STRING,
AUTHOR TYPE STRING,
CREATEDON TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGEDON TYPE STRING,
CHGDANYBY TYPE STRING,
CHGDANYON TYPE STRING,
CLSEMBED TYPE STRING,
CLSABSTRCT TYPE STRING,
CLSFINAL TYPE STRING,
CLSCCINCL TYPE STRING,
CLSDEFATT TYPE STRING,
CLSDEFMTD TYPE STRING,
REFCLSNAME TYPE STRING,
FIXPT TYPE STRING,
VARCL TYPE STRING,
UNICODE TYPE STRING,
RSTAT TYPE STRING,
CLSBCIMPL TYPE STRING,
R3RELEASE TYPE STRING,
CLSBCTRANS TYPE STRING,
CLSBCCAT TYPE STRING,
CLSBCNODEL TYPE STRING,
CLSADDON TYPE STRING,
MSG_ID TYPE STRING,
CLSPROXY TYPE STRING,
CLSSHAREDMEMORY TYPE STRING,
WITH_UNIT_TESTS TYPE STRING,
DURATION_TYPE TYPE STRING,
RISK_LEVEL TYPE STRING,
WITHIN_PACKAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SEOCLASSDF_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_SEOCLASSDF_STR-CLSNAME sy-vline 
WA_SEOCLASSDF_STR-VERSION sy-vline 
WA_SEOCLASSDF_STR-CATEGORY sy-vline 
WA_SEOCLASSDF_STR-EXPOSURE sy-vline 
WA_SEOCLASSDF_STR-STATE sy-vline 
WA_SEOCLASSDF_STR-RELEASE sy-vline 
WA_SEOCLASSDF_STR-AUTHOR sy-vline 
WA_SEOCLASSDF_STR-CREATEDON sy-vline 
WA_SEOCLASSDF_STR-CHANGEDBY sy-vline 
WA_SEOCLASSDF_STR-CHANGEDON sy-vline 
WA_SEOCLASSDF_STR-CHGDANYBY sy-vline 
WA_SEOCLASSDF_STR-CHGDANYON sy-vline 
WA_SEOCLASSDF_STR-CLSEMBED sy-vline 
WA_SEOCLASSDF_STR-CLSABSTRCT sy-vline 
WA_SEOCLASSDF_STR-CLSFINAL sy-vline 
WA_SEOCLASSDF_STR-CLSCCINCL sy-vline 
WA_SEOCLASSDF_STR-CLSDEFATT sy-vline 
WA_SEOCLASSDF_STR-CLSDEFMTD sy-vline 
WA_SEOCLASSDF_STR-REFCLSNAME sy-vline 
WA_SEOCLASSDF_STR-FIXPT sy-vline 
WA_SEOCLASSDF_STR-VARCL sy-vline 
WA_SEOCLASSDF_STR-UNICODE sy-vline 
WA_SEOCLASSDF_STR-RSTAT sy-vline 
WA_SEOCLASSDF_STR-CLSBCIMPL sy-vline 
WA_SEOCLASSDF_STR-R3RELEASE sy-vline 
WA_SEOCLASSDF_STR-CLSBCTRANS sy-vline 
WA_SEOCLASSDF_STR-CLSBCCAT sy-vline 
WA_SEOCLASSDF_STR-CLSBCNODEL sy-vline 
WA_SEOCLASSDF_STR-CLSADDON sy-vline 
WA_SEOCLASSDF_STR-MSG_ID sy-vline 
WA_SEOCLASSDF_STR-CLSPROXY sy-vline 
WA_SEOCLASSDF_STR-CLSSHAREDMEMORY sy-vline 
WA_SEOCLASSDF_STR-WITH_UNIT_TESTS sy-vline 
WA_SEOCLASSDF_STR-DURATION_TYPE sy-vline 
WA_SEOCLASSDF_STR-RISK_LEVEL sy-vline 
WA_SEOCLASSDF_STR-WITHIN_PACKAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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