ABAP Select data from SAP table APRDUOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM APRDUOM
*  INTO TABLE @DATA(IT_APRDUOM2).
*--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_APRDUOM INDEX 1 INTO DATA(WA_APRDUOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<APRDUOM>-MANDT = 1.
<APRDUOM>-PRODUCT = 1.
<APRDUOM>-ALTERNATIVEUNIT = 1.
<APRDUOM>-QUANTITYNUMERATOR = 1.
<APRDUOM>-QUANTITYDENOMINATOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_APRDUOM-MATERIALVOLUME, sy-vline,
  WA_APRDUOM-VOLUMEUNIT, sy-vline,
  WA_APRDUOM-GROSSWEIGHT, sy-vline,
  WA_APRDUOM-WEIGHTUNIT, sy-vline,
  WA_APRDUOM-GLOBALTRADEITEMNUMBER, sy-vline,
  WA_APRDUOM-GLOBALTRADEITEMNUMBERCATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_APRDUOM 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_APRDUOM 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_APRDUOM INTO WA_APRDUOM.


*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 MATN1, internal->external for field PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_APRDUOM-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_APRDUOM-PRODUCT.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit EAN11, internal->external for field GLOBALTRADEITEMNUMBER
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_APRDUOM-GLOBALTRADEITEMNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_APRDUOM-GLOBALTRADEITEMNUMBER.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_APRDUOM-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_APRDUOM-BASEUNIT.
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_APRDUOM_STR, 
MANDT TYPE STRING,
PRODUCT TYPE STRING,
ALTERNATIVEUNIT TYPE STRING,
QUANTITYNUMERATOR TYPE STRING,
QUANTITYDENOMINATOR TYPE STRING,
MATERIALVOLUME TYPE STRING,
VOLUMEUNIT TYPE STRING,
GROSSWEIGHT TYPE STRING,
WEIGHTUNIT TYPE STRING,
GLOBALTRADEITEMNUMBER TYPE STRING,
GLOBALTRADEITEMNUMBERCATEGORY TYPE STRING,
UNITSPECIFICPRODUCTLENGTH TYPE STRING,
UNITSPECIFICPRODUCTWIDTH TYPE STRING,
UNITSPECIFICPRODUCTHEIGHT TYPE STRING,
PRODUCTMEASUREMENTUNIT TYPE STRING,
LOWERLEVELPACKAGINGUNIT TYPE STRING,
REMAININGVOLUMEAFTERNESTING TYPE STRING,
MAXIMUMSTACKINGFACTOR TYPE STRING,
CAPACITYUSAGE TYPE STRING,
BASEUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_APRDUOM_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_APRDUOM_STR-MANDT sy-vline 
WA_APRDUOM_STR-PRODUCT sy-vline 
WA_APRDUOM_STR-ALTERNATIVEUNIT sy-vline 
WA_APRDUOM_STR-QUANTITYNUMERATOR sy-vline 
WA_APRDUOM_STR-QUANTITYDENOMINATOR sy-vline 
WA_APRDUOM_STR-MATERIALVOLUME sy-vline 
WA_APRDUOM_STR-VOLUMEUNIT sy-vline 
WA_APRDUOM_STR-GROSSWEIGHT sy-vline 
WA_APRDUOM_STR-WEIGHTUNIT sy-vline 
WA_APRDUOM_STR-GLOBALTRADEITEMNUMBER sy-vline 
WA_APRDUOM_STR-GLOBALTRADEITEMNUMBERCATEGORY sy-vline 
WA_APRDUOM_STR-UNITSPECIFICPRODUCTLENGTH sy-vline 
WA_APRDUOM_STR-UNITSPECIFICPRODUCTWIDTH sy-vline 
WA_APRDUOM_STR-UNITSPECIFICPRODUCTHEIGHT sy-vline 
WA_APRDUOM_STR-PRODUCTMEASUREMENTUNIT sy-vline 
WA_APRDUOM_STR-LOWERLEVELPACKAGINGUNIT sy-vline 
WA_APRDUOM_STR-REMAININGVOLUMEAFTERNESTING sy-vline 
WA_APRDUOM_STR-MAXIMUMSTACKINGFACTOR sy-vline 
WA_APRDUOM_STR-CAPACITYUSAGE sy-vline 
WA_APRDUOM_STR-BASEUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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