ABAP Select data from SAP table REEXCMSREFXTEMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REEXCMSREFXTEMP
*  INTO TABLE @DATA(IT_REEXCMSREFXTEMP2).
*--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_REEXCMSREFXTEMP INDEX 1 INTO DATA(WA_REEXCMSREFXTEMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REEXCMSREFXTEMP>-MANDT = 1.
<REEXCMSREFXTEMP>-GUID = 1.
<REEXCMSREFXTEMP>-GUIDRE = 1.
<REEXCMSREFXTEMP>-INTRENO = 1.
<REEXCMSREFXTEMP>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REEXCMSREFXTEMP-FDLEV, sy-vline,
  WA_REEXCMSREFXTEMP-FDGRP, sy-vline,
  WA_REEXCMSREFXTEMP-FDTAG, sy-vline,
  WA_REEXCMSREFXTEMP-DISPW, sy-vline,
  WA_REEXCMSREFXTEMP-WRSHB, sy-vline,
  WA_REEXCMSREFXTEMP-PARTNER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REEXCMSREFXTEMP 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_REEXCMSREFXTEMP 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_REEXCMSREFXTEMP INTO WA_REEXCMSREFXTEMP.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field RECNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REEXCMSREFXTEMP-RECNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REEXCMSREFXTEMP-RECNNR.
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_REEXCMSREFXTEMP_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
GUIDRE TYPE STRING,
INTRENO TYPE STRING,
BUKRS TYPE STRING,
FDLEV TYPE STRING,
FDGRP TYPE STRING,
FDTAG TYPE STRING,
DISPW TYPE STRING,
WRSHB TYPE STRING,
PARTNER TYPE STRING,
GSBER TYPE STRING,
GEBER TYPE STRING,
GRANT_NBR TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
RECNNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REEXCMSREFXTEMP_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_REEXCMSREFXTEMP_STR-MANDT sy-vline 
WA_REEXCMSREFXTEMP_STR-GUID sy-vline 
WA_REEXCMSREFXTEMP_STR-GUIDRE sy-vline 
WA_REEXCMSREFXTEMP_STR-INTRENO sy-vline 
WA_REEXCMSREFXTEMP_STR-BUKRS sy-vline 
WA_REEXCMSREFXTEMP_STR-FDLEV sy-vline 
WA_REEXCMSREFXTEMP_STR-FDGRP sy-vline 
WA_REEXCMSREFXTEMP_STR-FDTAG sy-vline 
WA_REEXCMSREFXTEMP_STR-DISPW sy-vline 
WA_REEXCMSREFXTEMP_STR-WRSHB sy-vline 
WA_REEXCMSREFXTEMP_STR-PARTNER sy-vline 
WA_REEXCMSREFXTEMP_STR-GSBER sy-vline 
WA_REEXCMSREFXTEMP_STR-GEBER sy-vline 
WA_REEXCMSREFXTEMP_STR-GRANT_NBR sy-vline 
WA_REEXCMSREFXTEMP_STR-SEGMENT sy-vline 
WA_REEXCMSREFXTEMP_STR-PRCTR sy-vline 
WA_REEXCMSREFXTEMP_STR-RECNNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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