ABAP Select data from SAP table TTEPDT_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TTEPDT_ITEM
*  INTO TABLE @DATA(IT_TTEPDT_ITEM2).
*--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_TTEPDT_ITEM INDEX 1 INTO DATA(WA_TTEPDT_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TTEPDT_ITEM>-CLIENT = 1.
<TTEPDT_ITEM>-TTEDOCUMENTID = 1.
<TTEPDT_ITEM>-ITEMID = 1.
<TTEPDT_ITEM>-ITEMCOMMAND = 1.
<TTEPDT_ITEM>-REFITEMID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TTEPDT_ITEM-GROUPINGKEY, sy-vline,
  WA_TTEPDT_ITEM-POSITIONNUMBER, sy-vline,
  WA_TTEPDT_ITEM-BUSPROCESSTYPE, sy-vline,
  WA_TTEPDT_ITEM-BUSINESSPLACE, sy-vline,
  WA_TTEPDT_ITEM-PRODUCTID, sy-vline,
  WA_TTEPDT_ITEM-QUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TTEPDT_ITEM 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_TTEPDT_ITEM 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_TTEPDT_ITEM INTO WA_TTEPDT_ITEM.


*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_TTEPDT_ITEM_STR, 
CLIENT TYPE STRING,
TTEDOCUMENTID TYPE STRING,
ITEMID TYPE STRING,
ITEMCOMMAND TYPE STRING,
REFITEMID TYPE STRING,
GROUPINGKEY TYPE STRING,
POSITIONNUMBER TYPE STRING,
BUSPROCESSTYPE TYPE STRING,
BUSINESSPLACE TYPE STRING,
PRODUCTID TYPE STRING,
QUANTITY TYPE STRING,
DIRECTIONIND TYPE STRING,
UNITOFMEASURE TYPE STRING,
PRODUCTORIGIN TYPE STRING,
USAGEST TYPE STRING,
USAGESF TYPE STRING,
STATISTICALITEM TYPE STRING,
TRIANGULATIONIND TYPE STRING,
INCOTERMS1 TYPE STRING,
INCOTERMS2 TYPE STRING,
MULTIPLICITY TYPE STRING,
ODIRECTIONIND TYPE STRING,
REFMODE TYPE STRING,
BUSPARTNERID TYPE STRING,
CERTIFICATE_ID TYPE STRING,
ADCERTIFICATE_ID TYPE STRING,
REASON_CODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TTEPDT_ITEM_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_TTEPDT_ITEM_STR-CLIENT sy-vline 
WA_TTEPDT_ITEM_STR-TTEDOCUMENTID sy-vline 
WA_TTEPDT_ITEM_STR-ITEMID sy-vline 
WA_TTEPDT_ITEM_STR-ITEMCOMMAND sy-vline 
WA_TTEPDT_ITEM_STR-REFITEMID sy-vline 
WA_TTEPDT_ITEM_STR-GROUPINGKEY sy-vline 
WA_TTEPDT_ITEM_STR-POSITIONNUMBER sy-vline 
WA_TTEPDT_ITEM_STR-BUSPROCESSTYPE sy-vline 
WA_TTEPDT_ITEM_STR-BUSINESSPLACE sy-vline 
WA_TTEPDT_ITEM_STR-PRODUCTID sy-vline 
WA_TTEPDT_ITEM_STR-QUANTITY sy-vline 
WA_TTEPDT_ITEM_STR-DIRECTIONIND sy-vline 
WA_TTEPDT_ITEM_STR-UNITOFMEASURE sy-vline 
WA_TTEPDT_ITEM_STR-PRODUCTORIGIN sy-vline 
WA_TTEPDT_ITEM_STR-USAGEST sy-vline 
WA_TTEPDT_ITEM_STR-USAGESF sy-vline 
WA_TTEPDT_ITEM_STR-STATISTICALITEM sy-vline 
WA_TTEPDT_ITEM_STR-TRIANGULATIONIND sy-vline 
WA_TTEPDT_ITEM_STR-INCOTERMS1 sy-vline 
WA_TTEPDT_ITEM_STR-INCOTERMS2 sy-vline 
WA_TTEPDT_ITEM_STR-MULTIPLICITY sy-vline 
WA_TTEPDT_ITEM_STR-ODIRECTIONIND sy-vline 
WA_TTEPDT_ITEM_STR-REFMODE sy-vline 
WA_TTEPDT_ITEM_STR-BUSPARTNERID sy-vline 
WA_TTEPDT_ITEM_STR-CERTIFICATE_ID sy-vline 
WA_TTEPDT_ITEM_STR-ADCERTIFICATE_ID sy-vline 
WA_TTEPDT_ITEM_STR-REASON_CODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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