ABAP Select data from SAP table ROIJ_EL_ERROR_LOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJ_EL_ERROR_LOG
*  INTO TABLE @DATA(IT_ROIJ_EL_ERROR_LOG2).
*--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_ROIJ_EL_ERROR_LOG INDEX 1 INTO DATA(WA_ROIJ_EL_ERROR_LOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJ_EL_ERROR_LOG>-OIJ_ERRORLOG_ICON = 1.
<ROIJ_EL_ERROR_LOG>-TICKETNR = 1.
<ROIJ_EL_ERROR_LOG>-TICKET_KEY = 1.
<ROIJ_EL_ERROR_LOG>-TICKET_ITEM = 1.
<ROIJ_EL_ERROR_LOG>-TICKET_VERSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJ_EL_ERROR_LOG-TICKET_PURPOSE, sy-vline,
  WA_ROIJ_EL_ERROR_LOG-TICKET_PURP_TXT, sy-vline,
  WA_ROIJ_EL_ERROR_LOG-SEQ_NMBR, sy-vline,
  WA_ROIJ_EL_ERROR_LOG-NOMTK, sy-vline,
  WA_ROIJ_EL_ERROR_LOG-NOMNR, sy-vline,
  WA_ROIJ_EL_ERROR_LOG-NOMIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJ_EL_ERROR_LOG 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_ROIJ_EL_ERROR_LOG 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_ROIJ_EL_ERROR_LOG INTO WA_ROIJ_EL_ERROR_LOG.


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

*Conversion exit ALPHA, internal->external for field TICKET_KEY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_EL_ERROR_LOG-TICKET_KEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_EL_ERROR_LOG-TICKET_KEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NOMTK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_EL_ERROR_LOG-NOMTK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_EL_ERROR_LOG-NOMTK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DESCRIPTION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_EL_ERROR_LOG-DESCRIPTION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_EL_ERROR_LOG-DESCRIPTION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_EL_ERROR_LOG-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_EL_ERROR_LOG-DOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_EL_ERROR_LOG-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_EL_ERROR_LOG-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FUNC_IND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_EL_ERROR_LOG-FUNC_IND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_EL_ERROR_LOG-FUNC_IND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FUNC_TXT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_EL_ERROR_LOG-FUNC_TXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_EL_ERROR_LOG-FUNC_TXT.
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_ROIJ_EL_ERROR_LOG_STR, 
OIJ_ERRORLOG_ICON TYPE STRING,
TICKETNR TYPE STRING,
TICKET_KEY TYPE STRING,
TICKET_ITEM TYPE STRING,
TICKET_VERSION TYPE STRING,
TICKET_PURPOSE TYPE STRING,
TICKET_PURP_TXT TYPE STRING,
SEQ_NMBR TYPE STRING,
NOMTK TYPE STRING,
NOMNR TYPE STRING,
NOMIT TYPE STRING,
MVSCENARIO TYPE STRING,
DESCRIPTION TYPE STRING,
TCODE TYPE STRING,
RETURNCODE TYPE STRING,
DOC_TEXT TYPE STRING,
DOCNR TYPE STRING,
MJAHR TYPE STRING,
POSNR TYPE STRING,
VBTYP TYPE STRING,
BSTYP TYPE STRING,
TRDATE TYPE STRING,
TRTIME TYPE STRING,
MSG_TEXT TYPE STRING,
MSGID TYPE STRING,
MSGTY TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
REVDOC TYPE STRING,
FUNC_IND TYPE STRING,
FUNCNAM TYPE STRING,
FUNC_TXT TYPE STRING,
ICON_EXP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJ_EL_ERROR_LOG_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_ROIJ_EL_ERROR_LOG_STR-OIJ_ERRORLOG_ICON sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-TICKETNR sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-TICKET_KEY sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-TICKET_ITEM sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-TICKET_VERSION sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-TICKET_PURPOSE sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-TICKET_PURP_TXT sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-SEQ_NMBR sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-NOMTK sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-NOMNR sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-NOMIT sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-MVSCENARIO sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-DESCRIPTION sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-TCODE sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-RETURNCODE sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-DOC_TEXT sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-DOCNR sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-MJAHR sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-POSNR sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-VBTYP sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-BSTYP sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-TRDATE sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-TRTIME sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-MSG_TEXT sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-MSGID sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-MSGTY sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-MSGNO sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-MSGV1 sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-MSGV2 sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-MSGV3 sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-MSGV4 sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-REVDOC sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-FUNC_IND sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-FUNCNAM sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-FUNC_TXT sy-vline 
WA_ROIJ_EL_ERROR_LOG_STR-ICON_EXP sy-vline      INTO ld_text SEPARATED BY SPACE.

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