ABAP Select data from SAP table EUDB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EUDB
*  INTO TABLE @DATA(IT_EUDB2).
*--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_EUDB INDEX 1 INTO DATA(WA_EUDB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EUDB>-RELID = 1.
<EUDB>-NAME = 1.
<EUDB>-SPRSL = 1.
<EUDB>-SRTF2 = 1.
<EUDB>-LANGU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EUDB-AUTOR, sy-vline,
  WA_EUDB-DATUM, sy-vline,
  WA_EUDB-ZEIT, sy-vline,
  WA_EUDB-VAUTOR, sy-vline,
  WA_EUDB-VDATUM, sy-vline,
  WA_EUDB-VZEIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EUDB 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_EUDB 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_EUDB INTO WA_EUDB.


*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 SPRSL
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_EUDB-SPRSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EUDB-SPRSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_EUDB-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EUDB-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_EUDB_STR, 
RELID TYPE STRING,
NAME TYPE STRING,
SPRSL TYPE STRING,
SRTF2 TYPE STRING,
LANGU TYPE STRING,
AUTOR TYPE STRING,
DATUM TYPE STRING,
ZEIT TYPE STRING,
VAUTOR TYPE STRING,
VDATUM TYPE STRING,
VZEIT TYPE STRING,
GDATUM TYPE STRING,
GZEIT TYPE STRING,
GSDATUM TYPE STRING,
GSZEIT TYPE STRING,
VERSION TYPE STRING,
CLUSTR TYPE STRING,
CLUSTD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EUDB_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_EUDB_STR-RELID sy-vline 
WA_EUDB_STR-NAME sy-vline 
WA_EUDB_STR-SPRSL sy-vline 
WA_EUDB_STR-SRTF2 sy-vline 
WA_EUDB_STR-LANGU sy-vline 
WA_EUDB_STR-AUTOR sy-vline 
WA_EUDB_STR-DATUM sy-vline 
WA_EUDB_STR-ZEIT sy-vline 
WA_EUDB_STR-VAUTOR sy-vline 
WA_EUDB_STR-VDATUM sy-vline 
WA_EUDB_STR-VZEIT sy-vline 
WA_EUDB_STR-GDATUM sy-vline 
WA_EUDB_STR-GZEIT sy-vline 
WA_EUDB_STR-GSDATUM sy-vline 
WA_EUDB_STR-GSZEIT sy-vline 
WA_EUDB_STR-VERSION sy-vline 
WA_EUDB_STR-CLUSTR sy-vline 
WA_EUDB_STR-CLUSTD sy-vline      INTO ld_text SEPARATED BY SPACE.

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