ABAP Select data from SAP table ERROUT_AV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ERROUT_AV
*  INTO TABLE @DATA(IT_ERROUT_AV2).
*--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_ERROUT_AV INDEX 1 INTO DATA(WA_ERROUT_AV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ERROUT_AV>-DOC_NAME = 1.
<ERROUT_AV>-NUM = 1.
<ERROUT_AV>-POS_NR = 1.
<ERROUT_AV>-LINENR = 1.
<ERROUT_AV>-STATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ERROUT_AV-DESCRIPTION, sy-vline,
  WA_ERROUT_AV-INCLUDE, sy-vline,
  WA_ERROUT_AV-MSGID, sy-vline,
  WA_ERROUT_AV-MSGNO, sy-vline,
  WA_ERROUT_AV-MSGTY, sy-vline,
  WA_ERROUT_AV-MSGV1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ERROUT_AV 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_ERROUT_AV 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_ERROUT_AV INTO WA_ERROUT_AV.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ERROUT_AV_STR, 
DOC_NAME TYPE STRING,
NUM TYPE STRING,
POS_NR TYPE STRING,
LINENR TYPE STRING,
STATUS TYPE STRING,
DESCRIPTION TYPE STRING,
INCLUDE TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGTY TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ERROUT_AV_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_ERROUT_AV_STR-DOC_NAME sy-vline 
WA_ERROUT_AV_STR-NUM sy-vline 
WA_ERROUT_AV_STR-POS_NR sy-vline 
WA_ERROUT_AV_STR-LINENR sy-vline 
WA_ERROUT_AV_STR-STATUS sy-vline 
WA_ERROUT_AV_STR-DESCRIPTION sy-vline 
WA_ERROUT_AV_STR-INCLUDE sy-vline 
WA_ERROUT_AV_STR-MSGID sy-vline 
WA_ERROUT_AV_STR-MSGNO sy-vline 
WA_ERROUT_AV_STR-MSGTY sy-vline 
WA_ERROUT_AV_STR-MSGV1 sy-vline 
WA_ERROUT_AV_STR-MSGV2 sy-vline 
WA_ERROUT_AV_STR-MSGV3 sy-vline 
WA_ERROUT_AV_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.