ABAP Select data from SAP table PRCT_SIM_ITEM_DU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRCT_SIM_ITEM_DU
*  INTO TABLE @DATA(IT_PRCT_SIM_ITEM_DU2).
*--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_PRCT_SIM_ITEM_DU INDEX 1 INTO DATA(WA_PRCT_SIM_ITEM_DU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRCT_SIM_ITEM_DU>-CLIENT = 1.
<PRCT_SIM_ITEM_DU>-DOCUMENT_ID = 1.
<PRCT_SIM_ITEM_DU>-ITEM_ID = 1.
<PRCT_SIM_ITEM_DU>-HIGH_LVL_ITEM_ID = 1.
<PRCT_SIM_ITEM_DU>-EXTERNAL_ITEM_NO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRCT_SIM_ITEM_DU-PRICING_RELEVANT, sy-vline,
  WA_PRCT_SIM_ITEM_DU-RETURN_FLAG, sy-vline,
  WA_PRCT_SIM_ITEM_DU-MULTIPLICITY, sy-vline,
  WA_PRCT_SIM_ITEM_DU-STATISTICAL, sy-vline,
  WA_PRCT_SIM_ITEM_DU-FIXED, sy-vline,
  WA_PRCT_SIM_ITEM_DU-PRODUCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRCT_SIM_ITEM_DU 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_PRCT_SIM_ITEM_DU 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_PRCT_SIM_ITEM_DU INTO WA_PRCT_SIM_ITEM_DU.


*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 PRODUCT_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PRCT_SIM_ITEM_DU-PRODUCT_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRCT_SIM_ITEM_DU-PRODUCT_UOM.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field POINTS_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PRCT_SIM_ITEM_DU-POINTS_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRCT_SIM_ITEM_DU-POINTS_UNIT.
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_PRCT_SIM_ITEM_DU_STR, 
CLIENT TYPE STRING,
DOCUMENT_ID TYPE STRING,
ITEM_ID TYPE STRING,
HIGH_LVL_ITEM_ID TYPE STRING,
EXTERNAL_ITEM_NO TYPE STRING,
PRICING_RELEVANT TYPE STRING,
RETURN_FLAG TYPE STRING,
MULTIPLICITY TYPE STRING,
STATISTICAL TYPE STRING,
FIXED TYPE STRING,
PRODUCT TYPE STRING,
PRODUCT_QUANTITY TYPE STRING,
PRODUCT_UOM TYPE STRING,
NUMERATOR TYPE STRING,
DENOMINATOR TYPE STRING,
EXPONENT TYPE STRING,
NET_WEIGHT TYPE STRING,
GROSS_WEIGHT TYPE STRING,
WEIGHT_UNIT TYPE STRING,
VOLUM TYPE STRING,
VOLUME_UNIT TYPE STRING,
POINTS TYPE STRING,
POINTS_UNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRCT_SIM_ITEM_DU_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_PRCT_SIM_ITEM_DU_STR-CLIENT sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-DOCUMENT_ID sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-ITEM_ID sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-HIGH_LVL_ITEM_ID sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-EXTERNAL_ITEM_NO sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-PRICING_RELEVANT sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-RETURN_FLAG sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-MULTIPLICITY sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-STATISTICAL sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-FIXED sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-PRODUCT sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-PRODUCT_QUANTITY sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-PRODUCT_UOM sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-NUMERATOR sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-DENOMINATOR sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-EXPONENT sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-NET_WEIGHT sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-GROSS_WEIGHT sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-WEIGHT_UNIT sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-VOLUM sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-VOLUME_UNIT sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-POINTS sy-vline 
WA_PRCT_SIM_ITEM_DU_STR-POINTS_UNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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