ABAP Select data from SAP table PRIT_ITEM_MAIN_INPUT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRIT_ITEM_MAIN_INPUT
*  INTO TABLE @DATA(IT_PRIT_ITEM_MAIN_INPUT2).
*--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_PRIT_ITEM_MAIN_INPUT INDEX 1 INTO DATA(WA_PRIT_ITEM_MAIN_INPUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRIT_ITEM_MAIN_INPUT>-ITEM_ID = 1.
<PRIT_ITEM_MAIN_INPUT>-ITEM_ID_EXT = 1.
<PRIT_ITEM_MAIN_INPUT>-PARENT_ITEM_ID = 1.
<PRIT_ITEM_MAIN_INPUT>-PRODUCT_ID = 1.
<PRIT_ITEM_MAIN_INPUT>-PRODUCT_ERP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRIT_ITEM_MAIN_INPUT-EXCH_RATE_TYPE, sy-vline,
  WA_PRIT_ITEM_MAIN_INPUT-EXCH_RATE_DATE, sy-vline,
  WA_PRIT_ITEM_MAIN_INPUT-EXCH_RATE_EXTERNAL, sy-vline,
  WA_PRIT_ITEM_MAIN_INPUT-QUANTITY, sy-vline,
  WA_PRIT_ITEM_MAIN_INPUT-QUANTITY_UNIT, sy-vline,
  WA_PRIT_ITEM_MAIN_INPUT-NUMERATOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRIT_ITEM_MAIN_INPUT 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_PRIT_ITEM_MAIN_INPUT 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_PRIT_ITEM_MAIN_INPUT INTO WA_PRIT_ITEM_MAIN_INPUT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PRIT_ITEM_MAIN_INPUT_STR, 
ITEM_ID TYPE STRING,
ITEM_ID_EXT TYPE STRING,
PARENT_ITEM_ID TYPE STRING,
PRODUCT_ID TYPE STRING,
PRODUCT_ERP TYPE STRING,
EXCH_RATE_TYPE TYPE STRING,
EXCH_RATE_DATE TYPE STRING,
EXCH_RATE_EXTERNAL TYPE STRING,
QUANTITY TYPE STRING,
QUANTITY_UNIT TYPE STRING,
NUMERATOR TYPE STRING,
DENOMINATOR TYPE STRING,
EXPONENT TYPE STRING,
GROSS_WEIGHT TYPE STRING,
NET_WEIGHT TYPE STRING,
WEIGHT_UNIT TYPE STRING,
VOLUME TYPE STRING,
VOLUME_UNIT TYPE STRING,
POINTS TYPE STRING,
POINTS_UNIT TYPE STRING,
DATE_FROM_BASE TYPE STRING,
DATE_TO_BASE TYPE STRING,
NUM_OF_DAYS_BASE TYPE STRING,
NUM_OF_WEEKS_BASE TYPE STRING,
NUM_OF_MONTHS_BASE TYPE STRING,
NUM_OF_YEARS_BASE TYPE STRING,
DATE_FROM_SCALE TYPE STRING,
DATE_TO_SCALE TYPE STRING,
NUM_OF_DAYS_SCALE TYPE STRING,
NUM_OF_WEEKS_SCALE TYPE STRING,
NUM_OF_MONTHS_SCALE TYPE STRING,
NUM_OF_YEARS_SCALE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRIT_ITEM_MAIN_INPUT_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_PRIT_ITEM_MAIN_INPUT_STR-ITEM_ID sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-ITEM_ID_EXT sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-PARENT_ITEM_ID sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-PRODUCT_ID sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-PRODUCT_ERP sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-EXCH_RATE_TYPE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-EXCH_RATE_DATE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-EXCH_RATE_EXTERNAL sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-QUANTITY sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-QUANTITY_UNIT sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-NUMERATOR sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-DENOMINATOR sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-EXPONENT sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-GROSS_WEIGHT sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-NET_WEIGHT sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-WEIGHT_UNIT sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-VOLUME sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-VOLUME_UNIT sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-POINTS sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-POINTS_UNIT sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-DATE_FROM_BASE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-DATE_TO_BASE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-NUM_OF_DAYS_BASE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-NUM_OF_WEEKS_BASE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-NUM_OF_MONTHS_BASE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-NUM_OF_YEARS_BASE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-DATE_FROM_SCALE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-DATE_TO_SCALE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-NUM_OF_DAYS_SCALE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-NUM_OF_WEEKS_SCALE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-NUM_OF_MONTHS_SCALE sy-vline 
WA_PRIT_ITEM_MAIN_INPUT_STR-NUM_OF_YEARS_SCALE sy-vline      INTO ld_text SEPARATED BY SPACE.

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