ABAP Select data from SAP table RECEC_ASSET_OBJDIF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECEC_ASSET_OBJDIF
*  INTO TABLE @DATA(IT_RECEC_ASSET_OBJDIF2).
*--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_RECEC_ASSET_OBJDIF INDEX 1 INTO DATA(WA_RECEC_ASSET_OBJDIF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECEC_ASSET_OBJDIF>-MANDT = 1.
<RECEC_ASSET_OBJDIF>-BUKRS = 1.
<RECEC_ASSET_OBJDIF>-OBJTYPE = 1.
<RECEC_ASSET_OBJDIF>-OBJTYPEDIFF = 1.
<RECEC_ASSET_OBJDIF>-RECNTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECEC_ASSET_OBJDIF-ANLKL, sy-vline,
  WA_RECEC_ASSET_OBJDIF-ANLKLB, sy-vline,
  WA_RECEC_ASSET_OBJDIF-ACCDETKEY, sy-vline,
  WA_RECEC_ASSET_OBJDIF-ANLKLTXT, sy-vline,
  WA_RECEC_ASSET_OBJDIF-ANLKLTXTB, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_RECEC_ASSET_OBJDIF 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_RECEC_ASSET_OBJDIF 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_RECEC_ASSET_OBJDIF INTO WA_RECEC_ASSET_OBJDIF.


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

*Conversion exit ALPHA, internal->external for field ANLKLB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RECEC_ASSET_OBJDIF-ANLKLB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECEC_ASSET_OBJDIF-ANLKLB.
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_RECEC_ASSET_OBJDIF_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
OBJTYPE TYPE STRING,
OBJTYPEDIFF TYPE STRING,
RECNTYPE TYPE STRING,
ANLKL TYPE STRING,
ANLKLB TYPE STRING,
ACCDETKEY TYPE STRING,
ANLKLTXT TYPE STRING,
ANLKLTXTB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECEC_ASSET_OBJDIF_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_RECEC_ASSET_OBJDIF_STR-MANDT sy-vline 
WA_RECEC_ASSET_OBJDIF_STR-BUKRS sy-vline 
WA_RECEC_ASSET_OBJDIF_STR-OBJTYPE sy-vline 
WA_RECEC_ASSET_OBJDIF_STR-OBJTYPEDIFF sy-vline 
WA_RECEC_ASSET_OBJDIF_STR-RECNTYPE sy-vline 
WA_RECEC_ASSET_OBJDIF_STR-ANLKL sy-vline 
WA_RECEC_ASSET_OBJDIF_STR-ANLKLB sy-vline 
WA_RECEC_ASSET_OBJDIF_STR-ACCDETKEY sy-vline 
WA_RECEC_ASSET_OBJDIF_STR-ANLKLTXT sy-vline 
WA_RECEC_ASSET_OBJDIF_STR-ANLKLTXTB sy-vline      INTO ld_text SEPARATED BY SPACE.

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