ABAP Select data from SAP table EVAL_IV_ERR_ITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EVAL_IV_ERR_ITM
*  INTO TABLE @DATA(IT_EVAL_IV_ERR_ITM2).
*--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_EVAL_IV_ERR_ITM INDEX 1 INTO DATA(WA_EVAL_IV_ERR_ITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EVAL_IV_ERR_ITM>-MANDT = 1.
<EVAL_IV_ERR_ITM>-BELNR = 1.
<EVAL_IV_ERR_ITM>-BUZEI = 1.
<EVAL_IV_ERR_ITM>-GJAHR = 1.
<EVAL_IV_ERR_ITM>-POSTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EVAL_IV_ERR_ITM-KRIT, sy-vline,
  WA_EVAL_IV_ERR_ITM-MSGID, sy-vline,
  WA_EVAL_IV_ERR_ITM-MSGTY, sy-vline,
  WA_EVAL_IV_ERR_ITM-MSGNO, sy-vline,
  WA_EVAL_IV_ERR_ITM-TIMST, sy-vline,
  WA_EVAL_IV_ERR_ITM-DATE_VE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EVAL_IV_ERR_ITM 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_EVAL_IV_ERR_ITM 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_EVAL_IV_ERR_ITM INTO WA_EVAL_IV_ERR_ITM.


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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_EVAL_IV_ERR_ITM-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EVAL_IV_ERR_ITM-GJAHR.
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_EVAL_IV_ERR_ITM_STR, 
MANDT TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
GJAHR TYPE STRING,
POSTYP TYPE STRING,
KRIT TYPE STRING,
MSGID TYPE STRING,
MSGTY TYPE STRING,
MSGNO TYPE STRING,
TIMST TYPE STRING,
DATE_VE TYPE STRING,
TIME_VE TYPE STRING,
TEXT TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EVAL_IV_ERR_ITM_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_EVAL_IV_ERR_ITM_STR-MANDT sy-vline 
WA_EVAL_IV_ERR_ITM_STR-BELNR sy-vline 
WA_EVAL_IV_ERR_ITM_STR-BUZEI sy-vline 
WA_EVAL_IV_ERR_ITM_STR-GJAHR sy-vline 
WA_EVAL_IV_ERR_ITM_STR-POSTYP sy-vline 
WA_EVAL_IV_ERR_ITM_STR-KRIT sy-vline 
WA_EVAL_IV_ERR_ITM_STR-MSGID sy-vline 
WA_EVAL_IV_ERR_ITM_STR-MSGTY sy-vline 
WA_EVAL_IV_ERR_ITM_STR-MSGNO sy-vline 
WA_EVAL_IV_ERR_ITM_STR-TIMST sy-vline 
WA_EVAL_IV_ERR_ITM_STR-DATE_VE sy-vline 
WA_EVAL_IV_ERR_ITM_STR-TIME_VE sy-vline 
WA_EVAL_IV_ERR_ITM_STR-TEXT sy-vline 
WA_EVAL_IV_ERR_ITM_STR-MSGV1 sy-vline 
WA_EVAL_IV_ERR_ITM_STR-MSGV2 sy-vline 
WA_EVAL_IV_ERR_ITM_STR-MSGV3 sy-vline 
WA_EVAL_IV_ERR_ITM_STR-MSGV4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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