ABAP Select data from SAP table RFZUA_ERRORS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFZUA_ERRORS
*  INTO TABLE @DATA(IT_RFZUA_ERRORS2).
*--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_RFZUA_ERRORS INDEX 1 INTO DATA(WA_RFZUA_ERRORS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFZUA_ERRORS>-SACHB = 1.
<RFZUA_ERRORS>-BUKRS = 1.
<RFZUA_ERRORS>-RANL = 1.
<RFZUA_ERRORS>-BETR = 1.
<RFZUA_ERRORS>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFZUA_ERRORS-KZ, sy-vline,
  WA_RFZUA_ERRORS-TIMESTAMP, sy-vline,
  WA_RFZUA_ERRORS-MSG, sy-vline,
  WA_RFZUA_ERRORS-MSGTY, sy-vline,
  WA_RFZUA_ERRORS-MSGID, sy-vline,
  WA_RFZUA_ERRORS-MSGNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFZUA_ERRORS 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_RFZUA_ERRORS 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_RFZUA_ERRORS INTO WA_RFZUA_ERRORS.


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

*Conversion exit TSTPS, internal->external for field TIMESTAMP
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_RFZUA_ERRORS-TIMESTAMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFZUA_ERRORS-TIMESTAMP.
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_RFZUA_ERRORS_STR, 
SACHB TYPE STRING,
BUKRS TYPE STRING,
RANL TYPE STRING,
BETR TYPE STRING,
WAERS TYPE STRING,
KZ TYPE STRING,
TIMESTAMP TYPE STRING,
MSG TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
MSGV1_SRC TYPE STRING,
MSGV2_SRC TYPE STRING,
MSGV3_SRC TYPE STRING,
MSGV4_SRC TYPE STRING,
DETLEVEL TYPE STRING,
PROBCLASS TYPE STRING,
ALSORT TYPE STRING,
TIME_STMP TYPE STRING,
MSG_COUNT TYPE STRING,
CONTEXT TYPE STRING,
TABNAME TYPE STRING,
VALUE TYPE STRING,
PARAMS TYPE STRING,
T_PAR TYPE STRING,
CALLBACK TYPE STRING,
USEREXITP TYPE STRING,
USEREXITF TYPE STRING,
USEREXITT TYPE STRING,
ALTEXT TYPE STRING,
TRLO_MESG TYPE STRING,
GRUPPE TYPE STRING,
MSGTY TYPE STRING,
TEXT TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
INFO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFZUA_ERRORS_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_RFZUA_ERRORS_STR-SACHB sy-vline 
WA_RFZUA_ERRORS_STR-BUKRS sy-vline 
WA_RFZUA_ERRORS_STR-RANL sy-vline 
WA_RFZUA_ERRORS_STR-BETR sy-vline 
WA_RFZUA_ERRORS_STR-WAERS sy-vline 
WA_RFZUA_ERRORS_STR-KZ sy-vline 
WA_RFZUA_ERRORS_STR-TIMESTAMP sy-vline 
WA_RFZUA_ERRORS_STR-MSG sy-vline 
WA_RFZUA_ERRORS_STR-MSGTY sy-vline 
WA_RFZUA_ERRORS_STR-MSGID sy-vline 
WA_RFZUA_ERRORS_STR-MSGNO sy-vline 
WA_RFZUA_ERRORS_STR-MSGV1 sy-vline 
WA_RFZUA_ERRORS_STR-MSGV2 sy-vline 
WA_RFZUA_ERRORS_STR-MSGV3 sy-vline 
WA_RFZUA_ERRORS_STR-MSGV4 sy-vline 
WA_RFZUA_ERRORS_STR-MSGV1_SRC sy-vline 
WA_RFZUA_ERRORS_STR-MSGV2_SRC sy-vline 
WA_RFZUA_ERRORS_STR-MSGV3_SRC sy-vline 
WA_RFZUA_ERRORS_STR-MSGV4_SRC sy-vline 
WA_RFZUA_ERRORS_STR-DETLEVEL sy-vline 
WA_RFZUA_ERRORS_STR-PROBCLASS sy-vline 
WA_RFZUA_ERRORS_STR-ALSORT sy-vline 
WA_RFZUA_ERRORS_STR-TIME_STMP sy-vline 
WA_RFZUA_ERRORS_STR-MSG_COUNT sy-vline 
WA_RFZUA_ERRORS_STR-CONTEXT sy-vline 
WA_RFZUA_ERRORS_STR-TABNAME sy-vline 
WA_RFZUA_ERRORS_STR-VALUE sy-vline 
WA_RFZUA_ERRORS_STR-PARAMS sy-vline 
WA_RFZUA_ERRORS_STR-T_PAR sy-vline 
WA_RFZUA_ERRORS_STR-CALLBACK sy-vline 
WA_RFZUA_ERRORS_STR-USEREXITP sy-vline 
WA_RFZUA_ERRORS_STR-USEREXITF sy-vline 
WA_RFZUA_ERRORS_STR-USEREXITT sy-vline 
WA_RFZUA_ERRORS_STR-ALTEXT sy-vline 
WA_RFZUA_ERRORS_STR-TRLO_MESG sy-vline 
WA_RFZUA_ERRORS_STR-GRUPPE sy-vline 
WA_RFZUA_ERRORS_STR-MSGTY sy-vline 
WA_RFZUA_ERRORS_STR-TEXT sy-vline 
WA_RFZUA_ERRORS_STR-MSGID sy-vline 
WA_RFZUA_ERRORS_STR-MSGNO sy-vline 
WA_RFZUA_ERRORS_STR-MSGV1 sy-vline 
WA_RFZUA_ERRORS_STR-MSGV2 sy-vline 
WA_RFZUA_ERRORS_STR-MSGV3 sy-vline 
WA_RFZUA_ERRORS_STR-MSGV4 sy-vline 
WA_RFZUA_ERRORS_STR-INFO sy-vline      INTO ld_text SEPARATED BY SPACE.

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