ABAP Select data from SAP table QIERR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QIERR
*  INTO TABLE @DATA(IT_QIERR2).
*--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_QIERR INDEX 1 INTO DATA(WA_QIERR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QIERR>-LFDNR = 1.
<QIERR>-MSGID = 1.
<QIERR>-MSGNR = 1.
<QIERR>-MSGTYPE = 1.
<QIERR>-MSGTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QIERR-LOG_NO, sy-vline,
  WA_QIERR-LOG_MSG_NO, sy-vline,
  WA_QIERR-PARAM_NAME, sy-vline,
  WA_QIERR-PARAM_ROW, sy-vline,
  WA_QIERR-PARAM_FIELD, sy-vline,
  WA_QIERR-PRUEFLOS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QIERR 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_QIERR 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_QIERR INTO WA_QIERR.


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

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_QIERR-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QIERR-VORNR.
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_QIERR_STR, 
LFDNR TYPE STRING,
MSGID TYPE STRING,
MSGNR TYPE STRING,
MSGTYPE TYPE STRING,
MSGTEXT TYPE STRING,
LOG_NO TYPE STRING,
LOG_MSG_NO TYPE STRING,
PARAM_NAME TYPE STRING,
PARAM_ROW TYPE STRING,
PARAM_FIELD TYPE STRING,
PRUEFLOS TYPE STRING,
PLNFL TYPE STRING,
VORNR TYPE STRING,
VORGLFNR TYPE STRING,
MERKNR TYPE STRING,
KATAB TYPE STRING,
KATALGART TYPE STRING,
AUSWMGWRK TYPE STRING,
AUSWMENGE TYPE STRING,
CODEGRUPPE TYPE STRING,
CODE TYPE STRING,
RUECKMELNR TYPE STRING,
PROBENR TYPE STRING,
STUECKNR TYPE STRING,
SATZART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QIERR_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_QIERR_STR-LFDNR sy-vline 
WA_QIERR_STR-MSGID sy-vline 
WA_QIERR_STR-MSGNR sy-vline 
WA_QIERR_STR-MSGTYPE sy-vline 
WA_QIERR_STR-MSGTEXT sy-vline 
WA_QIERR_STR-LOG_NO sy-vline 
WA_QIERR_STR-LOG_MSG_NO sy-vline 
WA_QIERR_STR-PARAM_NAME sy-vline 
WA_QIERR_STR-PARAM_ROW sy-vline 
WA_QIERR_STR-PARAM_FIELD sy-vline 
WA_QIERR_STR-PRUEFLOS sy-vline 
WA_QIERR_STR-PLNFL sy-vline 
WA_QIERR_STR-VORNR sy-vline 
WA_QIERR_STR-VORGLFNR sy-vline 
WA_QIERR_STR-MERKNR sy-vline 
WA_QIERR_STR-KATAB sy-vline 
WA_QIERR_STR-KATALGART sy-vline 
WA_QIERR_STR-AUSWMGWRK sy-vline 
WA_QIERR_STR-AUSWMENGE sy-vline 
WA_QIERR_STR-CODEGRUPPE sy-vline 
WA_QIERR_STR-CODE sy-vline 
WA_QIERR_STR-RUECKMELNR sy-vline 
WA_QIERR_STR-PROBENR sy-vline 
WA_QIERR_STR-STUECKNR sy-vline 
WA_QIERR_STR-SATZART sy-vline      INTO ld_text SEPARATED BY SPACE.

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