ABAP Select data from SAP table EMDUSRQITEM_DISP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EMDUSRQITEM_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 EMDUSRQITEM_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 EMDUSRQITEM_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_EMDUSRQITEM_DISP TYPE STANDARD TABLE OF EMDUSRQITEM_DISP,
      WA_EMDUSRQITEM_DISP TYPE EMDUSRQITEM_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: <EMDUSRQITEM_DISP> TYPE EMDUSRQITEM_DISP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EMDUSRQITEM_DISP
*  INTO TABLE @DATA(IT_EMDUSRQITEM_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_EMDUSRQITEM_DISP INDEX 1 INTO DATA(WA_EMDUSRQITEM_DISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EMDUSRQITEM_DISP>-MDUSREQUESTID = 1.
<EMDUSRQITEM_DISP>-RQITEMID = 1.
<EMDUSRQITEM_DISP>-FORMULA = 1.
<EMDUSRQITEM_DISP>-MDUSID = 1.
<EMDUSRQITEM_DISP>-DATEFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EMDUSRQITEM_DISP-TIMEFROM, sy-vline,
  WA_EMDUSRQITEM_DISP-DATETO, sy-vline,
  WA_EMDUSRQITEM_DISP-TIMETO, sy-vline,
  WA_EMDUSRQITEM_DISP-TOUFROM, sy-vline,
  WA_EMDUSRQITEM_DISP-TOUTO, sy-vline,
  WA_EMDUSRQITEM_DISP-REPLVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EMDUSRQITEM_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_EMDUSRQITEM_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_EMDUSRQITEM_DISP INTO WA_EMDUSRQITEM_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EMDUSRQITEM_DISP_STR, 
MDUSREQUESTID TYPE STRING,
RQITEMID TYPE STRING,
FORMULA TYPE STRING,
MDUSID TYPE STRING,
DATEFROM TYPE STRING,
TIMEFROM TYPE STRING,
DATETO TYPE STRING,
TIMETO TYPE STRING,
TOUFROM TYPE STRING,
TOUTO TYPE STRING,
REPLVALUE TYPE STRING,
LOCKINDICATOR TYPE STRING,
MONDAY TYPE STRING,
TUESDAY TYPE STRING,
WEDNESDAY TYPE STRING,
THURSDAY TYPE STRING,
FRIDAY TYPE STRING,
SATURDAY TYPE STRING,
SUNDAY TYPE STRING,
TARIFNR TYPE STRING,
INTERFACE TYPE STRING,
LOGIKZW TYPE STRING,
RQASSIGN TYPE STRING,
SEASON TYPE STRING,
DAYGROUP TYPE STRING,
PUBHOLIDAY TYPE STRING,
EXDAY TYPE STRING,
MDUSIDTEXT TYPE STRING,
RQASSIGNTEXT TYPE STRING,
TARIFNRTEXT TYPE STRING,
INTERFACETEXT TYPE STRING,
SEASONTEXT TYPE STRING,
CELLTAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EMDUSRQITEM_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_EMDUSRQITEM_DISP_STR-MDUSREQUESTID sy-vline 
WA_EMDUSRQITEM_DISP_STR-RQITEMID sy-vline 
WA_EMDUSRQITEM_DISP_STR-FORMULA sy-vline 
WA_EMDUSRQITEM_DISP_STR-MDUSID sy-vline 
WA_EMDUSRQITEM_DISP_STR-DATEFROM sy-vline 
WA_EMDUSRQITEM_DISP_STR-TIMEFROM sy-vline 
WA_EMDUSRQITEM_DISP_STR-DATETO sy-vline 
WA_EMDUSRQITEM_DISP_STR-TIMETO sy-vline 
WA_EMDUSRQITEM_DISP_STR-TOUFROM sy-vline 
WA_EMDUSRQITEM_DISP_STR-TOUTO sy-vline 
WA_EMDUSRQITEM_DISP_STR-REPLVALUE sy-vline 
WA_EMDUSRQITEM_DISP_STR-LOCKINDICATOR sy-vline 
WA_EMDUSRQITEM_DISP_STR-MONDAY sy-vline 
WA_EMDUSRQITEM_DISP_STR-TUESDAY sy-vline 
WA_EMDUSRQITEM_DISP_STR-WEDNESDAY sy-vline 
WA_EMDUSRQITEM_DISP_STR-THURSDAY sy-vline 
WA_EMDUSRQITEM_DISP_STR-FRIDAY sy-vline 
WA_EMDUSRQITEM_DISP_STR-SATURDAY sy-vline 
WA_EMDUSRQITEM_DISP_STR-SUNDAY sy-vline 
WA_EMDUSRQITEM_DISP_STR-TARIFNR sy-vline 
WA_EMDUSRQITEM_DISP_STR-INTERFACE sy-vline 
WA_EMDUSRQITEM_DISP_STR-LOGIKZW sy-vline 
WA_EMDUSRQITEM_DISP_STR-RQASSIGN sy-vline 
WA_EMDUSRQITEM_DISP_STR-SEASON sy-vline 
WA_EMDUSRQITEM_DISP_STR-DAYGROUP sy-vline 
WA_EMDUSRQITEM_DISP_STR-PUBHOLIDAY sy-vline 
WA_EMDUSRQITEM_DISP_STR-EXDAY sy-vline 
WA_EMDUSRQITEM_DISP_STR-MDUSIDTEXT sy-vline 
WA_EMDUSRQITEM_DISP_STR-RQASSIGNTEXT sy-vline 
WA_EMDUSRQITEM_DISP_STR-TARIFNRTEXT sy-vline 
WA_EMDUSRQITEM_DISP_STR-INTERFACETEXT sy-vline 
WA_EMDUSRQITEM_DISP_STR-SEASONTEXT sy-vline 
WA_EMDUSRQITEM_DISP_STR-CELLTAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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