ABAP Select data from SAP table ROSREQUEST 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 ROSREQUEST 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 ROSREQUEST. 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 ROSREQUEST 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_ROSREQUEST TYPE STANDARD TABLE OF ROSREQUEST,
      WA_ROSREQUEST TYPE ROSREQUEST,
      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: <ROSREQUEST> TYPE ROSREQUEST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROSREQUEST
*  INTO TABLE @DATA(IT_ROSREQUEST2).
*--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_ROSREQUEST INDEX 1 INTO DATA(WA_ROSREQUEST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROSREQUEST>-REQUNR = 1.
<ROSREQUEST>-REQOBJTYPE = 1.
<ROSREQUEST>-IOBJECT = 1.
<ROSREQUEST>-REQDATE = 1.
<ROSREQUEST>-REQTIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROSREQUEST-REQUSER, sy-vline,
  WA_ROSREQUEST-SNDPRN, sy-vline,
  WA_ROSREQUEST-RCVPRN, sy-vline,
  WA_ROSREQUEST-DATAPAKID, sy-vline,
  WA_ROSREQUEST-UPDMODE, sy-vline,
  WA_ROSREQUEST-TRSPMODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROSREQUEST 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_ROSREQUEST 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_ROSREQUEST INTO WA_ROSREQUEST.


*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 SNDPRN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROSREQUEST-SNDPRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROSREQUEST-SNDPRN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCVPRN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROSREQUEST-RCVPRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROSREQUEST-RCVPRN.
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_ROSREQUEST_STR, 
REQUNR TYPE STRING,
REQOBJTYPE TYPE STRING,
IOBJECT TYPE STRING,
REQDATE TYPE STRING,
REQTIME TYPE STRING,
REQUSER TYPE STRING,
SNDPRN TYPE STRING,
RCVPRN TYPE STRING,
DATAPAKID TYPE STRING,
UPDMODE TYPE STRING,
TRSPMODE TYPE STRING,
BACKGROUND TYPE STRING,
IMMEDIATE TYPE STRING,
BENCHMARK TYPE STRING,
PARALFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROSREQUEST_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_ROSREQUEST_STR-REQUNR sy-vline 
WA_ROSREQUEST_STR-REQOBJTYPE sy-vline 
WA_ROSREQUEST_STR-IOBJECT sy-vline 
WA_ROSREQUEST_STR-REQDATE sy-vline 
WA_ROSREQUEST_STR-REQTIME sy-vline 
WA_ROSREQUEST_STR-REQUSER sy-vline 
WA_ROSREQUEST_STR-SNDPRN sy-vline 
WA_ROSREQUEST_STR-RCVPRN sy-vline 
WA_ROSREQUEST_STR-DATAPAKID sy-vline 
WA_ROSREQUEST_STR-UPDMODE sy-vline 
WA_ROSREQUEST_STR-TRSPMODE sy-vline 
WA_ROSREQUEST_STR-BACKGROUND sy-vline 
WA_ROSREQUEST_STR-IMMEDIATE sy-vline 
WA_ROSREQUEST_STR-BENCHMARK sy-vline 
WA_ROSREQUEST_STR-PARALFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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