ABAP Select data from SAP table EMDUSRQRESULT_DISP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EMDUSRQRESULT_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 EMDUSRQRESULT_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 EMDUSRQRESULT_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_EMDUSRQRESULT_DISP TYPE STANDARD TABLE OF EMDUSRQRESULT_DISP,
      WA_EMDUSRQRESULT_DISP TYPE EMDUSRQRESULT_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: <EMDUSRQRESULT_DISP> TYPE EMDUSRQRESULT_DISP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EMDUSRQRESULT_DISP
*  INTO TABLE @DATA(IT_EMDUSRQRESULT_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_EMDUSRQRESULT_DISP INDEX 1 INTO DATA(WA_EMDUSRQRESULT_DISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EMDUSRQRESULT_DISP>-MDUSREQUESTID = 1.
<EMDUSRQRESULT_DISP>-RQITEMID = 1.
<EMDUSRQRESULT_DISP>-PARNUMBER = 1.
<EMDUSRQRESULT_DISP>-PARCAT = 1.
<EMDUSRQRESULT_DISP>-MASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EMDUSRQRESULT_DISP-VALUE, sy-vline,
  WA_EMDUSRQRESULT_DISP-DATE, sy-vline,
  WA_EMDUSRQRESULT_DISP-TIME, sy-vline,
  WA_EMDUSRQRESULT_DISP-TIMEZONE, sy-vline,
  WA_EMDUSRQRESULT_DISP-PROFILE, sy-vline,
  WA_EMDUSRQRESULT_DISP-REPLVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EMDUSRQRESULT_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_EMDUSRQRESULT_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_EMDUSRQRESULT_DISP INTO WA_EMDUSRQRESULT_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 CUNIT, internal->external for field MASS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EMDUSRQRESULT_DISP-MASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EMDUSRQRESULT_DISP-MASS.
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_EMDUSRQRESULT_DISP_STR, 
MDUSREQUESTID TYPE STRING,
RQITEMID TYPE STRING,
PARNUMBER TYPE STRING,
PARCAT TYPE STRING,
MASS TYPE STRING,
VALUE TYPE STRING,
DATE TYPE STRING,
TIME TYPE STRING,
TIMEZONE TYPE STRING,
PROFILE TYPE STRING,
REPLVALUE TYPE STRING,
RESPAR TYPE STRING,
PARCATTEXT TYPE STRING,
RESPARTEXT TYPE STRING,
CELLTAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EMDUSRQRESULT_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_EMDUSRQRESULT_DISP_STR-MDUSREQUESTID sy-vline 
WA_EMDUSRQRESULT_DISP_STR-RQITEMID sy-vline 
WA_EMDUSRQRESULT_DISP_STR-PARNUMBER sy-vline 
WA_EMDUSRQRESULT_DISP_STR-PARCAT sy-vline 
WA_EMDUSRQRESULT_DISP_STR-MASS sy-vline 
WA_EMDUSRQRESULT_DISP_STR-VALUE sy-vline 
WA_EMDUSRQRESULT_DISP_STR-DATE sy-vline 
WA_EMDUSRQRESULT_DISP_STR-TIME sy-vline 
WA_EMDUSRQRESULT_DISP_STR-TIMEZONE sy-vline 
WA_EMDUSRQRESULT_DISP_STR-PROFILE sy-vline 
WA_EMDUSRQRESULT_DISP_STR-REPLVALUE sy-vline 
WA_EMDUSRQRESULT_DISP_STR-RESPAR sy-vline 
WA_EMDUSRQRESULT_DISP_STR-PARCATTEXT sy-vline 
WA_EMDUSRQRESULT_DISP_STR-RESPARTEXT sy-vline 
WA_EMDUSRQRESULT_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.