ABAP Select data from SAP table REXCJPREOBJCONS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCJPREOBJCONS
*  INTO TABLE @DATA(IT_REXCJPREOBJCONS2).
*--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_REXCJPREOBJCONS INDEX 1 INTO DATA(WA_REXCJPREOBJCONS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCJPREOBJCONS>-MEASVALUE = 1.
<REXCJPREOBJCONS>-MEASUNIT = 1.
<REXCJPREOBJCONS>-MEAS = 1.
<REXCJPREOBJCONS>-POINT = 1.
<REXCJPREOBJCONS>-CONSUMPTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCJPREOBJCONS-TOTALCONS, sy-vline,
  WA_REXCJPREOBJCONS-CONSMEASUNIT, sy-vline,
  WA_REXCJPREOBJCONS-FIXEDUNITPRICE, sy-vline,
  WA_REXCJPREOBJCONS-WAERS, sy-vline,
  WA_REXCJPREOBJCONS-TAXCALCMODE, sy-vline,
  WA_REXCJPREOBJCONS-APPORTFROM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCJPREOBJCONS 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_REXCJPREOBJCONS 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_REXCJPREOBJCONS INTO WA_REXCJPREOBJCONS.


*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 CUNIT, internal->external for field MEASUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REXCJPREOBJCONS-MEASUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCJPREOBJCONS-MEASUNIT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field CONSMEASUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REXCJPREOBJCONS-CONSMEASUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCJPREOBJCONS-CONSMEASUNIT.
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_REXCJPREOBJCONS_STR, 
MEASVALUE TYPE STRING,
MEASUNIT TYPE STRING,
MEAS TYPE STRING,
POINT TYPE STRING,
CONSUMPTION TYPE STRING,
TOTALCONS TYPE STRING,
CONSMEASUNIT TYPE STRING,
FIXEDUNITPRICE TYPE STRING,
WAERS TYPE STRING,
TAXCALCMODE TYPE STRING,
APPORTFROM TYPE STRING,
APPORTTO TYPE STRING,
CEOBJNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCJPREOBJCONS_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_REXCJPREOBJCONS_STR-MEASVALUE sy-vline 
WA_REXCJPREOBJCONS_STR-MEASUNIT sy-vline 
WA_REXCJPREOBJCONS_STR-MEAS sy-vline 
WA_REXCJPREOBJCONS_STR-POINT sy-vline 
WA_REXCJPREOBJCONS_STR-CONSUMPTION sy-vline 
WA_REXCJPREOBJCONS_STR-TOTALCONS sy-vline 
WA_REXCJPREOBJCONS_STR-CONSMEASUNIT sy-vline 
WA_REXCJPREOBJCONS_STR-FIXEDUNITPRICE sy-vline 
WA_REXCJPREOBJCONS_STR-WAERS sy-vline 
WA_REXCJPREOBJCONS_STR-TAXCALCMODE sy-vline 
WA_REXCJPREOBJCONS_STR-APPORTFROM sy-vline 
WA_REXCJPREOBJCONS_STR-APPORTTO sy-vline 
WA_REXCJPREOBJCONS_STR-CEOBJNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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