ABAP Select data from SAP table REEX_ASSET_CREATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REEX_ASSET_CREATE
*  INTO TABLE @DATA(IT_REEX_ASSET_CREATE2).
*--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_REEX_ASSET_CREATE INDEX 1 INTO DATA(WA_REEX_ASSET_CREATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REEX_ASSET_CREATE>-RECAOBJNR = 1.
<REEX_ASSET_CREATE>-TERMNO = 1.
<REEX_ASSET_CREATE>-COMPANYCODE = 1.
<REEX_ASSET_CREATE>-MASTERFIXEDASSET = 1.
<REEX_ASSET_CREATE>-FIXEDASSET = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REEX_ASSET_CREATE-EXTERNAL_NUMBER_ASSIGNMENT, sy-vline,
  WA_REEX_ASSET_CREATE-ASSETISFORPOSTCAPITALIZATION, sy-vline,
  WA_REEX_ASSET_CREATE-ASSETCAPITALIZATIONDATE, sy-vline,
  WA_REEX_ASSET_CREATE-ASSETCLASS, sy-vline,
  WA_REEX_ASSET_CREATE-FIXEDASSETDESCRIPTION, sy-vline,
  WA_REEX_ASSET_CREATE-VALIDITYENDDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REEX_ASSET_CREATE 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_REEX_ASSET_CREATE 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_REEX_ASSET_CREATE INTO WA_REEX_ASSET_CREATE.


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

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

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

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

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

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

*Conversion exit ABPSP, internal->external for field WBSELEMENTINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_REEX_ASSET_CREATE-WBSELEMENTINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REEX_ASSET_CREATE-WBSELEMENTINTERNALID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IMKEY, internal->external for field REALESTATEOBJECT
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_REEX_ASSET_CREATE-REALESTATEOBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REEX_ASSET_CREATE-REALESTATEOBJECT.
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_REEX_ASSET_CREATE_STR, 
RECAOBJNR TYPE STRING,
TERMNO TYPE STRING,
COMPANYCODE TYPE STRING,
MASTERFIXEDASSET TYPE STRING,
FIXEDASSET TYPE STRING,
EXTERNAL_NUMBER_ASSIGNMENT TYPE STRING,
ASSETISFORPOSTCAPITALIZATION TYPE STRING,
ASSETCAPITALIZATIONDATE TYPE STRING,
ASSETCLASS TYPE STRING,
FIXEDASSETDESCRIPTION TYPE STRING,
VALIDITYENDDATE TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
COSTCENTER TYPE STRING,
BUSINESSAREA TYPE STRING,
INTERNALORDER TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
REALESTATEOBJECT TYPE STRING,
DEPRECIATION_AREA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REEX_ASSET_CREATE_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_REEX_ASSET_CREATE_STR-RECAOBJNR sy-vline 
WA_REEX_ASSET_CREATE_STR-TERMNO sy-vline 
WA_REEX_ASSET_CREATE_STR-COMPANYCODE sy-vline 
WA_REEX_ASSET_CREATE_STR-MASTERFIXEDASSET sy-vline 
WA_REEX_ASSET_CREATE_STR-FIXEDASSET sy-vline 
WA_REEX_ASSET_CREATE_STR-EXTERNAL_NUMBER_ASSIGNMENT sy-vline 
WA_REEX_ASSET_CREATE_STR-ASSETISFORPOSTCAPITALIZATION sy-vline 
WA_REEX_ASSET_CREATE_STR-ASSETCAPITALIZATIONDATE sy-vline 
WA_REEX_ASSET_CREATE_STR-ASSETCLASS sy-vline 
WA_REEX_ASSET_CREATE_STR-FIXEDASSETDESCRIPTION sy-vline 
WA_REEX_ASSET_CREATE_STR-VALIDITYENDDATE sy-vline 
WA_REEX_ASSET_CREATE_STR-VALIDITYSTARTDATE sy-vline 
WA_REEX_ASSET_CREATE_STR-COSTCENTER sy-vline 
WA_REEX_ASSET_CREATE_STR-BUSINESSAREA sy-vline 
WA_REEX_ASSET_CREATE_STR-INTERNALORDER sy-vline 
WA_REEX_ASSET_CREATE_STR-WBSELEMENTINTERNALID sy-vline 
WA_REEX_ASSET_CREATE_STR-REALESTATEOBJECT sy-vline 
WA_REEX_ASSET_CREATE_STR-DEPRECIATION_AREA sy-vline      INTO ld_text SEPARATED BY SPACE.

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