ABAP Select data from SAP table FNDEI_S_DRF_UNITOFMEASUREMENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FNDEI_S_DRF_UNITOFMEASUREMENT
*  INTO TABLE @DATA(IT_FNDEI_S_DRF_UNITOFMEASUREMENT2).
*--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_FNDEI_S_DRF_UNITOFMEASUREMENT INDEX 1 INTO DATA(WA_FNDEI_S_DRF_UNITOFMEASUREMENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FNDEI_S_DRF_UNITOFMEASUREMENT>-MSEHI = 1.
<FNDEI_S_DRF_UNITOFMEASUREMENT>-ANDEC = 1.
<FNDEI_S_DRF_UNITOFMEASUREMENT>-DIMID = 1.
<FNDEI_S_DRF_UNITOFMEASUREMENT>-DECAN = 1.
<FNDEI_S_DRF_UNITOFMEASUREMENT>-ISOCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FNDEI_S_DRF_UNITOFMEASUREMENT-PRIMARY, sy-vline,
  WA_FNDEI_S_DRF_UNITOFMEASUREMENT-MSEH3, sy-vline,
  WA_FNDEI_S_DRF_UNITOFMEASUREMENT-MSEH6, sy-vline,
  WA_FNDEI_S_DRF_UNITOFMEASUREMENT-MSEHL, sy-vline,
  WA_FNDEI_S_DRF_UNITOFMEASUREMENT-LAISO, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_FNDEI_S_DRF_UNITOFMEASUREMENT 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_FNDEI_S_DRF_UNITOFMEASUREMENT 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_FNDEI_S_DRF_UNITOFMEASUREMENT INTO WA_FNDEI_S_DRF_UNITOFMEASUREMENT.


*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 MSEHI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FNDEI_S_DRF_UNITOFMEASUREMENT-MSEHI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FNDEI_S_DRF_UNITOFMEASUREMENT-MSEHI.
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_FNDEI_S_DRF_UNITOFMEASUREMENT_STR, 
MSEHI TYPE STRING,
ANDEC TYPE STRING,
DIMID TYPE STRING,
DECAN TYPE STRING,
ISOCODE TYPE STRING,
PRIMARY TYPE STRING,
MSEH3 TYPE STRING,
MSEH6 TYPE STRING,
MSEHL TYPE STRING,
LAISO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FNDEI_S_DRF_UNITOFMEASUREMENT_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_FNDEI_S_DRF_UNITOFMEASUREMENT_STR-MSEHI sy-vline 
WA_FNDEI_S_DRF_UNITOFMEASUREMENT_STR-ANDEC sy-vline 
WA_FNDEI_S_DRF_UNITOFMEASUREMENT_STR-DIMID sy-vline 
WA_FNDEI_S_DRF_UNITOFMEASUREMENT_STR-DECAN sy-vline 
WA_FNDEI_S_DRF_UNITOFMEASUREMENT_STR-ISOCODE sy-vline 
WA_FNDEI_S_DRF_UNITOFMEASUREMENT_STR-PRIMARY sy-vline 
WA_FNDEI_S_DRF_UNITOFMEASUREMENT_STR-MSEH3 sy-vline 
WA_FNDEI_S_DRF_UNITOFMEASUREMENT_STR-MSEH6 sy-vline 
WA_FNDEI_S_DRF_UNITOFMEASUREMENT_STR-MSEHL sy-vline 
WA_FNDEI_S_DRF_UNITOFMEASUREMENT_STR-LAISO sy-vline      INTO ld_text SEPARATED BY SPACE.

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