ABAP Select data from SAP table COML_PR_UNIT_UI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COML_PR_UNIT_UI
*  INTO TABLE @DATA(IT_COML_PR_UNIT_UI2).
*--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_COML_PR_UNIT_UI INDEX 1 INTO DATA(WA_COML_PR_UNIT_UI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COML_PR_UNIT_UI>-CLIENT = 1.
<COML_PR_UNIT_UI>-PRODUCT_GUID = 1.
<COML_PR_UNIT_UI>-UNIT = 1.
<COML_PR_UNIT_UI>-NUMERATOR = 1.
<COML_PR_UNIT_UI>-DENOMINATOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COML_PR_UNIT_UI-EXPONENT10, sy-vline,
  WA_COML_PR_UNIT_UI-GROSS_WEIGHT, sy-vline,
  WA_COML_PR_UNIT_UI-NET_WEIGHT, sy-vline,
  WA_COML_PR_UNIT_UI-WEIGHT_UNIT, sy-vline,
  WA_COML_PR_UNIT_UI-VOLUME, sy-vline,
  WA_COML_PR_UNIT_UI-VOLUME_UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COML_PR_UNIT_UI 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_COML_PR_UNIT_UI 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_COML_PR_UNIT_UI INTO WA_COML_PR_UNIT_UI.


*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 TSTPS, internal->external for field VALID_FROM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_COML_PR_UNIT_UI-VALID_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COML_PR_UNIT_UI-VALID_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field VALID_TO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_COML_PR_UNIT_UI-VALID_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COML_PR_UNIT_UI-VALID_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COML_PR_UNIT_UI-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COML_PR_UNIT_UI-LOGSYS.
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_COML_PR_UNIT_UI_STR, 
CLIENT TYPE STRING,
PRODUCT_GUID TYPE STRING,
UNIT TYPE STRING,
NUMERATOR TYPE STRING,
DENOMINATOR TYPE STRING,
EXPONENT10 TYPE STRING,
GROSS_WEIGHT TYPE STRING,
NET_WEIGHT TYPE STRING,
WEIGHT_UNIT TYPE STRING,
VOLUME TYPE STRING,
VOLUME_UNIT TYPE STRING,
LENGTH TYPE STRING,
WIDTH TYPE STRING,
HEIGHT TYPE STRING,
UNIT_OF_DIM TYPE STRING,
IS_BASE_UNIT TYPE STRING,
COMM_PR_UNIT TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
UPNAME TYPE STRING,
HISTEX TYPE STRING,
LOGSYS TYPE STRING,
BASE_UOM TYPE STRING,
BASE_UOM_DESCR TYPE STRING,
UNIT_DESCR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COML_PR_UNIT_UI_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_COML_PR_UNIT_UI_STR-CLIENT sy-vline 
WA_COML_PR_UNIT_UI_STR-PRODUCT_GUID sy-vline 
WA_COML_PR_UNIT_UI_STR-UNIT sy-vline 
WA_COML_PR_UNIT_UI_STR-NUMERATOR sy-vline 
WA_COML_PR_UNIT_UI_STR-DENOMINATOR sy-vline 
WA_COML_PR_UNIT_UI_STR-EXPONENT10 sy-vline 
WA_COML_PR_UNIT_UI_STR-GROSS_WEIGHT sy-vline 
WA_COML_PR_UNIT_UI_STR-NET_WEIGHT sy-vline 
WA_COML_PR_UNIT_UI_STR-WEIGHT_UNIT sy-vline 
WA_COML_PR_UNIT_UI_STR-VOLUME sy-vline 
WA_COML_PR_UNIT_UI_STR-VOLUME_UNIT sy-vline 
WA_COML_PR_UNIT_UI_STR-LENGTH sy-vline 
WA_COML_PR_UNIT_UI_STR-WIDTH sy-vline 
WA_COML_PR_UNIT_UI_STR-HEIGHT sy-vline 
WA_COML_PR_UNIT_UI_STR-UNIT_OF_DIM sy-vline 
WA_COML_PR_UNIT_UI_STR-IS_BASE_UNIT sy-vline 
WA_COML_PR_UNIT_UI_STR-COMM_PR_UNIT sy-vline 
WA_COML_PR_UNIT_UI_STR-VALID_FROM sy-vline 
WA_COML_PR_UNIT_UI_STR-VALID_TO sy-vline 
WA_COML_PR_UNIT_UI_STR-UPNAME sy-vline 
WA_COML_PR_UNIT_UI_STR-HISTEX sy-vline 
WA_COML_PR_UNIT_UI_STR-LOGSYS sy-vline 
WA_COML_PR_UNIT_UI_STR-BASE_UOM sy-vline 
WA_COML_PR_UNIT_UI_STR-BASE_UOM_DESCR sy-vline 
WA_COML_PR_UNIT_UI_STR-UNIT_DESCR sy-vline      INTO ld_text SEPARATED BY SPACE.

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