ABAP Select data from SAP table /ORS/DIAG_LOGS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ORS/DIAG_LOGS 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 /ORS/DIAG_LOGS. 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 /ORS/DIAG_LOGS 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_/ORS/DIAG_LOGS TYPE STANDARD TABLE OF /ORS/DIAG_LOGS,
      WA_/ORS/DIAG_LOGS TYPE /ORS/DIAG_LOGS,
      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: </ORS/DIAG_LOGS> TYPE /ORS/DIAG_LOGS.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ORS/DIAG_LOGS
  INTO TABLE IT_/ORS/DIAG_LOGS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ORS/DIAG_LOGS
*  INTO TABLE @DATA(IT_/ORS/DIAG_LOGS2).
*--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_/ORS/DIAG_LOGS INDEX 1 INTO DATA(WA_/ORS/DIAG_LOGS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ORS/DIAG_LOGS ASSIGNING </ORS/DIAG_LOGS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ORS/DIAG_LOGS>-MANDT = 1.
</ORS/DIAG_LOGS>-INVOICE_TYPE = 1.
</ORS/DIAG_LOGS>-INVOICE_KEY = 1.
</ORS/DIAG_LOGS>-LINE_SEQUENCE = 1.
</ORS/DIAG_LOGS>-PROGRAM_TYPE = 1.

ENDLOOP.

LOOP AT IT_/ORS/DIAG_LOGS INTO WA_/ORS/DIAG_LOGS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ORS/DIAG_LOGS-PROGRAM_NAME, sy-vline,
  WA_/ORS/DIAG_LOGS-TCODE, sy-vline,
  WA_/ORS/DIAG_LOGS-DYNAME, sy-vline,
  WA_/ORS/DIAG_LOGS-DYNUMB, sy-vline,
  WA_/ORS/DIAG_LOGS-MSGTYP, sy-vline,
  WA_/ORS/DIAG_LOGS-MSGSPRA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ORS/DIAG_LOGS 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_/ORS/DIAG_LOGS 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_/ORS/DIAG_LOGS INTO WA_/ORS/DIAG_LOGS.


*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 ISOLA, internal->external for field MSGSPRA
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/ORS/DIAG_LOGS-MSGSPRA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ORS/DIAG_LOGS-MSGSPRA.
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_/ORS/DIAG_LOGS_STR, 
MANDT TYPE STRING,
INVOICE_TYPE TYPE STRING,
INVOICE_KEY TYPE STRING,
LINE_SEQUENCE TYPE STRING,
PROGRAM_TYPE TYPE STRING,
PROGRAM_NAME TYPE STRING,
TCODE TYPE STRING,
DYNAME TYPE STRING,
DYNUMB TYPE STRING,
MSGTYP TYPE STRING,
MSGSPRA TYPE STRING,
MSGID TYPE STRING,
MSGNR TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
ENV TYPE STRING,
FLDNAME TYPE STRING,
MESSAGE_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ORS/DIAG_LOGS_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_/ORS/DIAG_LOGS_STR-MANDT sy-vline 
WA_/ORS/DIAG_LOGS_STR-INVOICE_TYPE sy-vline 
WA_/ORS/DIAG_LOGS_STR-INVOICE_KEY sy-vline 
WA_/ORS/DIAG_LOGS_STR-LINE_SEQUENCE sy-vline 
WA_/ORS/DIAG_LOGS_STR-PROGRAM_TYPE sy-vline 
WA_/ORS/DIAG_LOGS_STR-PROGRAM_NAME sy-vline 
WA_/ORS/DIAG_LOGS_STR-TCODE sy-vline 
WA_/ORS/DIAG_LOGS_STR-DYNAME sy-vline 
WA_/ORS/DIAG_LOGS_STR-DYNUMB sy-vline 
WA_/ORS/DIAG_LOGS_STR-MSGTYP sy-vline 
WA_/ORS/DIAG_LOGS_STR-MSGSPRA sy-vline 
WA_/ORS/DIAG_LOGS_STR-MSGID sy-vline 
WA_/ORS/DIAG_LOGS_STR-MSGNR sy-vline 
WA_/ORS/DIAG_LOGS_STR-MSGV1 sy-vline 
WA_/ORS/DIAG_LOGS_STR-MSGV2 sy-vline 
WA_/ORS/DIAG_LOGS_STR-MSGV3 sy-vline 
WA_/ORS/DIAG_LOGS_STR-MSGV4 sy-vline 
WA_/ORS/DIAG_LOGS_STR-ENV sy-vline 
WA_/ORS/DIAG_LOGS_STR-FLDNAME sy-vline 
WA_/ORS/DIAG_LOGS_STR-MESSAGE_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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