ABAP Select data from SAP table IOUTREQILOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IOUTREQILOG
*  INTO TABLE @DATA(IT_IOUTREQILOG2).
*--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_IOUTREQILOG INDEX 1 INTO DATA(WA_IOUTREQILOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IOUTREQILOG>-MANDT = 1.
<IOUTREQILOG>-OUTPUTREQUESTITEMLOGUUID = 1.
<IOUTREQILOG>-OUTPUTREQUESTUUID = 1.
<IOUTREQILOG>-OUTPUTREQUESTITEMUUID = 1.
<IOUTREQILOG>-OUTPUTREQUESTNODENAMEUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IOUTREQILOG-OUTPUTREQUESTNODEATTRIBUTE, sy-vline,
  WA_IOUTREQILOG-OUTPUTREQUESTLOGLEVEL, sy-vline,
  WA_IOUTREQILOG-OUTPUTREQUESTMESSAGESEVERITY, sy-vline,
  WA_IOUTREQILOG-OUTPUTREQUESTMESSAGECLASS, sy-vline,
  WA_IOUTREQILOG-OUTPUTREQUESTMESSAGENUMBER, sy-vline,
  WA_IOUTREQILOG-SYSTEMMESSAGEVARIABLE1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IOUTREQILOG 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_IOUTREQILOG 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_IOUTREQILOG INTO WA_IOUTREQILOG.


*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_IOUTREQILOG_STR, 
MANDT TYPE STRING,
OUTPUTREQUESTITEMLOGUUID TYPE STRING,
OUTPUTREQUESTUUID TYPE STRING,
OUTPUTREQUESTITEMUUID TYPE STRING,
OUTPUTREQUESTNODENAMEUUID TYPE STRING,
OUTPUTREQUESTNODEATTRIBUTE TYPE STRING,
OUTPUTREQUESTLOGLEVEL TYPE STRING,
OUTPUTREQUESTMESSAGESEVERITY TYPE STRING,
OUTPUTREQUESTMESSAGECLASS TYPE STRING,
OUTPUTREQUESTMESSAGENUMBER TYPE STRING,
SYSTEMMESSAGEVARIABLE1 TYPE STRING,
SYSTEMMESSAGEVARIABLE2 TYPE STRING,
SYSTEMMESSAGEVARIABLE3 TYPE STRING,
SYSTEMMESSAGEVARIABLE4 TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
OUTPUTREQUESTMESSAGETEXT TYPE STRING,
OUTPUTREQUESTMESSAGELONGTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IOUTREQILOG_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_IOUTREQILOG_STR-MANDT sy-vline 
WA_IOUTREQILOG_STR-OUTPUTREQUESTITEMLOGUUID sy-vline 
WA_IOUTREQILOG_STR-OUTPUTREQUESTUUID sy-vline 
WA_IOUTREQILOG_STR-OUTPUTREQUESTITEMUUID sy-vline 
WA_IOUTREQILOG_STR-OUTPUTREQUESTNODENAMEUUID sy-vline 
WA_IOUTREQILOG_STR-OUTPUTREQUESTNODEATTRIBUTE sy-vline 
WA_IOUTREQILOG_STR-OUTPUTREQUESTLOGLEVEL sy-vline 
WA_IOUTREQILOG_STR-OUTPUTREQUESTMESSAGESEVERITY sy-vline 
WA_IOUTREQILOG_STR-OUTPUTREQUESTMESSAGECLASS sy-vline 
WA_IOUTREQILOG_STR-OUTPUTREQUESTMESSAGENUMBER sy-vline 
WA_IOUTREQILOG_STR-SYSTEMMESSAGEVARIABLE1 sy-vline 
WA_IOUTREQILOG_STR-SYSTEMMESSAGEVARIABLE2 sy-vline 
WA_IOUTREQILOG_STR-SYSTEMMESSAGEVARIABLE3 sy-vline 
WA_IOUTREQILOG_STR-SYSTEMMESSAGEVARIABLE4 sy-vline 
WA_IOUTREQILOG_STR-CREATIONDATETIME sy-vline 
WA_IOUTREQILOG_STR-CREATEDBYUSER sy-vline 
WA_IOUTREQILOG_STR-OUTPUTREQUESTMESSAGETEXT sy-vline 
WA_IOUTREQILOG_STR-OUTPUTREQUESTMESSAGELONGTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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