ABAP Select data from SAP table AVIIPOBJREL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AVIIPOBJREL
*  INTO TABLE @DATA(IT_AVIIPOBJREL2).
*--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_AVIIPOBJREL INDEX 1 INTO DATA(WA_AVIIPOBJREL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AVIIPOBJREL>-MANDT = 1.
<AVIIPOBJREL>-OBJRELGUID = 1.
<AVIIPOBJREL>-INTRENO = 1.
<AVIIPOBJREL>-INTRENOREL = 1.
<AVIIPOBJREL>-VALIDTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AVIIPOBJREL-MEAS, sy-vline,
  WA_AVIIPOBJREL-VALIDFROM, sy-vline,
  WA_AVIIPOBJREL-ISOBJECTRELPART, sy-vline,
  WA_AVIIPOBJREL-MEASPART, sy-vline,
  WA_AVIIPOBJREL-MEASUNIT, sy-vline,
  WA_AVIIPOBJREL-KZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AVIIPOBJREL 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_AVIIPOBJREL 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_AVIIPOBJREL INTO WA_AVIIPOBJREL.


*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 REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_AVIIPOBJREL-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVIIPOBJREL-VALIDTO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEASUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AVIIPOBJREL-MEASUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVIIPOBJREL-MEASUNIT.
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_AVIIPOBJREL_STR, 
MANDT TYPE STRING,
OBJRELGUID TYPE STRING,
INTRENO TYPE STRING,
INTRENOREL TYPE STRING,
VALIDTO TYPE STRING,
MEAS TYPE STRING,
VALIDFROM TYPE STRING,
ISOBJECTRELPART TYPE STRING,
MEASPART TYPE STRING,
MEASUNIT TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AVIIPOBJREL_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_AVIIPOBJREL_STR-MANDT sy-vline 
WA_AVIIPOBJREL_STR-OBJRELGUID sy-vline 
WA_AVIIPOBJREL_STR-INTRENO sy-vline 
WA_AVIIPOBJREL_STR-INTRENOREL sy-vline 
WA_AVIIPOBJREL_STR-VALIDTO sy-vline 
WA_AVIIPOBJREL_STR-MEAS sy-vline 
WA_AVIIPOBJREL_STR-VALIDFROM sy-vline 
WA_AVIIPOBJREL_STR-ISOBJECTRELPART sy-vline 
WA_AVIIPOBJREL_STR-MEASPART sy-vline 
WA_AVIIPOBJREL_STR-MEASUNIT sy-vline 
WA_AVIIPOBJREL_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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