ABAP Select data from SAP table EMDUSDRQITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EMDUSDRQITEM
*  INTO TABLE @DATA(IT_EMDUSDRQITEM2).
*--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_EMDUSDRQITEM INDEX 1 INTO DATA(WA_EMDUSDRQITEM2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EMDUSDRQITEM-DATEFROM, sy-vline,
  WA_EMDUSDRQITEM-TIMEFROM, sy-vline,
  WA_EMDUSDRQITEM-DATETO, sy-vline,
  WA_EMDUSDRQITEM-TIMETO, sy-vline,
  WA_EMDUSDRQITEM-TOUFROM, sy-vline,
  WA_EMDUSDRQITEM-TOUTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EMDUSDRQITEM 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_EMDUSDRQITEM 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_EMDUSDRQITEM INTO WA_EMDUSDRQITEM.


*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_EMDUSDRQITEM_STR, 
MANDT TYPE STRING,
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,END OF T_EKKO_STR.
DATA: WA_EMDUSDRQITEM_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_EMDUSDRQITEM_STR-MANDT sy-vline 
WA_EMDUSDRQITEM_STR-MDUSREQUESTID sy-vline 
WA_EMDUSDRQITEM_STR-RQITEMID sy-vline 
WA_EMDUSDRQITEM_STR-FORMULA sy-vline 
WA_EMDUSDRQITEM_STR-MDUSID sy-vline 
WA_EMDUSDRQITEM_STR-DATEFROM sy-vline 
WA_EMDUSDRQITEM_STR-TIMEFROM sy-vline 
WA_EMDUSDRQITEM_STR-DATETO sy-vline 
WA_EMDUSDRQITEM_STR-TIMETO sy-vline 
WA_EMDUSDRQITEM_STR-TOUFROM sy-vline 
WA_EMDUSDRQITEM_STR-TOUTO sy-vline 
WA_EMDUSDRQITEM_STR-REPLVALUE sy-vline 
WA_EMDUSDRQITEM_STR-LOCKINDICATOR sy-vline 
WA_EMDUSDRQITEM_STR-MONDAY sy-vline 
WA_EMDUSDRQITEM_STR-TUESDAY sy-vline 
WA_EMDUSDRQITEM_STR-WEDNESDAY sy-vline 
WA_EMDUSDRQITEM_STR-THURSDAY sy-vline 
WA_EMDUSDRQITEM_STR-FRIDAY sy-vline 
WA_EMDUSDRQITEM_STR-SATURDAY sy-vline 
WA_EMDUSDRQITEM_STR-SUNDAY sy-vline 
WA_EMDUSDRQITEM_STR-TARIFNR sy-vline 
WA_EMDUSDRQITEM_STR-INTERFACE sy-vline 
WA_EMDUSDRQITEM_STR-LOGIKZW sy-vline 
WA_EMDUSDRQITEM_STR-RQASSIGN sy-vline 
WA_EMDUSDRQITEM_STR-SEASON sy-vline 
WA_EMDUSDRQITEM_STR-DAYGROUP sy-vline 
WA_EMDUSDRQITEM_STR-PUBHOLIDAY sy-vline 
WA_EMDUSDRQITEM_STR-EXDAY sy-vline      INTO ld_text SEPARATED BY SPACE.

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