ABAP Select data from SAP table FDM_LDDB_DISP 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 FDM_LDDB_DISP 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 FDM_LDDB_DISP. 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 FDM_LDDB_DISP 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_FDM_LDDB_DISP TYPE STANDARD TABLE OF FDM_LDDB_DISP,
      WA_FDM_LDDB_DISP TYPE FDM_LDDB_DISP,
      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: <FDM_LDDB_DISP> TYPE FDM_LDDB_DISP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FDM_LDDB_DISP
*  INTO TABLE @DATA(IT_FDM_LDDB_DISP2).
*--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_FDM_LDDB_DISP INDEX 1 INTO DATA(WA_FDM_LDDB_DISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FDM_LDDB_DISP>-MANDT = 1.
<FDM_LDDB_DISP>-CASE_GUID = 1.
<FDM_LDDB_DISP>-BUKRS = 1.
<FDM_LDDB_DISP>-BELNR = 1.
<FDM_LDDB_DISP>-GJAHR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FDM_LDDB_DISP-BUZEI, sy-vline,
  WA_FDM_LDDB_DISP-CHANGETIME_CASE, sy-vline,
  WA_FDM_LDDB_DISP-FIELDNAME, sy-vline,
  WA_FDM_LDDB_DISP-CHANGE_USER, sy-vline,
  WA_FDM_LDDB_DISP-CHANGETIME_BSEG, sy-vline,
  WA_FDM_LDDB_DISP-CHANGESTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FDM_LDDB_DISP 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_FDM_LDDB_DISP 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_FDM_LDDB_DISP INTO WA_FDM_LDDB_DISP.


*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 ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDM_LDDB_DISP-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM_LDDB_DISP-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FDM_LDDB_DISP-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM_LDDB_DISP-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field CHANGETIME_CASE
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_FDM_LDDB_DISP-CHANGETIME_CASE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM_LDDB_DISP-CHANGETIME_CASE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field CHANGETIME_BSEG
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_FDM_LDDB_DISP-CHANGETIME_BSEG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM_LDDB_DISP-CHANGETIME_BSEG.
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_FDM_LDDB_DISP_STR, 
MANDT TYPE STRING,
CASE_GUID TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
CHANGETIME_CASE TYPE STRING,
FIELDNAME TYPE STRING,
CHANGE_USER TYPE STRING,
CHANGETIME_BSEG TYPE STRING,
CHANGESTATUS TYPE STRING,
EXECUTIONDATE TYPE STRING,
VALUE_NEW TYPE STRING,
VALUE_OLD TYPE STRING,
PROC_SEQNR TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGVAR1 TYPE STRING,
MSGVAR2 TYPE STRING,
MSGVAR3 TYPE STRING,
MSGVAR4 TYPE STRING,
INVALID TYPE STRING,
MSGTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FDM_LDDB_DISP_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_FDM_LDDB_DISP_STR-MANDT sy-vline 
WA_FDM_LDDB_DISP_STR-CASE_GUID sy-vline 
WA_FDM_LDDB_DISP_STR-BUKRS sy-vline 
WA_FDM_LDDB_DISP_STR-BELNR sy-vline 
WA_FDM_LDDB_DISP_STR-GJAHR sy-vline 
WA_FDM_LDDB_DISP_STR-BUZEI sy-vline 
WA_FDM_LDDB_DISP_STR-CHANGETIME_CASE sy-vline 
WA_FDM_LDDB_DISP_STR-FIELDNAME sy-vline 
WA_FDM_LDDB_DISP_STR-CHANGE_USER sy-vline 
WA_FDM_LDDB_DISP_STR-CHANGETIME_BSEG sy-vline 
WA_FDM_LDDB_DISP_STR-CHANGESTATUS sy-vline 
WA_FDM_LDDB_DISP_STR-EXECUTIONDATE sy-vline 
WA_FDM_LDDB_DISP_STR-VALUE_NEW sy-vline 
WA_FDM_LDDB_DISP_STR-VALUE_OLD sy-vline 
WA_FDM_LDDB_DISP_STR-PROC_SEQNR sy-vline 
WA_FDM_LDDB_DISP_STR-MSGID sy-vline 
WA_FDM_LDDB_DISP_STR-MSGNO sy-vline 
WA_FDM_LDDB_DISP_STR-MSGVAR1 sy-vline 
WA_FDM_LDDB_DISP_STR-MSGVAR2 sy-vline 
WA_FDM_LDDB_DISP_STR-MSGVAR3 sy-vline 
WA_FDM_LDDB_DISP_STR-MSGVAR4 sy-vline 
WA_FDM_LDDB_DISP_STR-INVALID sy-vline 
WA_FDM_LDDB_DISP_STR-MSGTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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