ABAP Select data from SAP table FKK_EBS_DOC_BPITEM_TREE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_EBS_DOC_BPITEM_TREE
*  INTO TABLE @DATA(IT_FKK_EBS_DOC_BPITEM_TREE2).
*--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_FKK_EBS_DOC_BPITEM_TREE INDEX 1 INTO DATA(WA_FKK_EBS_DOC_BPITEM_TREE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_EBS_DOC_BPITEM_TREE>-BUSPARTNER = 1.
<FKK_EBS_DOC_BPITEM_TREE>-CTRACT_ID = 1.
<FKK_EBS_DOC_BPITEM_TREE>-CONTRACT = 1.
<FKK_EBS_DOC_BPITEM_TREE>-NET_DATE = 1.
<FKK_EBS_DOC_BPITEM_TREE>-AMOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_EBS_DOC_BPITEM_TREE-TAX_ID, sy-vline,
  WA_FKK_EBS_DOC_BPITEM_TREE-POS_ID1, sy-vline,
  WA_FKK_EBS_DOC_BPITEM_TREE-POS_ID2, sy-vline,
  WA_FKK_EBS_DOC_BPITEM_TREE-POS_ID3, sy-vline,
  WA_FKK_EBS_DOC_BPITEM_TREE-POS_ID4, sy-vline,
  WA_FKK_EBS_DOC_BPITEM_TREE-POS_ID5, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_EBS_DOC_BPITEM_TREE 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_FKK_EBS_DOC_BPITEM_TREE 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_FKK_EBS_DOC_BPITEM_TREE INTO WA_FKK_EBS_DOC_BPITEM_TREE.


*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_FKK_EBS_DOC_BPITEM_TREE_STR, 
BUSPARTNER TYPE STRING,
CTRACT_ID TYPE STRING,
CONTRACT TYPE STRING,
NET_DATE TYPE STRING,
AMOUNT TYPE STRING,
TAX_ID TYPE STRING,
POS_ID1 TYPE STRING,
POS_ID2 TYPE STRING,
POS_ID3 TYPE STRING,
POS_ID4 TYPE STRING,
POS_ID5 TYPE STRING,
TAX_DATE TYPE STRING,
TAXJURCODE TYPE STRING,
FINAL_RECIPIENT TYPE STRING,
CALC_PERLO TYPE STRING,
CALC_PERHI TYPE STRING,
ACCTASSCAT TYPE STRING,
ACCT_ASSGT TYPE STRING,
EXT_REF_1 TYPE STRING,
EXT_REF_2 TYPE STRING,
STAT_TAX_AMOUNT TYPE STRING,
REFERENCE_POSITION TYPE STRING,
PAYMENTMETHOD TYPE STRING,
PROFIT_CTR TYPE STRING,
GLITEM TYPE STRING,
AMOUNT TYPE STRING,
TAX_ID TYPE STRING,
POS_ID1 TYPE STRING,
POS_ID2 TYPE STRING,
POS_ID3 TYPE STRING,
POS_ID4 TYPE STRING,
POS_ID5 TYPE STRING,
POS_ID6 TYPE STRING,
ACCTASSCAT TYPE STRING,
ACCT_ASSGT TYPE STRING,
QUANTITY TYPE STRING,
UNIT_OF_MEASURE TYPE STRING,
COPAITEMS TYPE STRING,
DEFREVITEMS TYPE STRING,
TAXITEM TYPE STRING,
TAX_BASE TYPE STRING,
AMOUNT TYPE STRING,
TAX_ID TYPE STRING,
SUB_TAX_ID TYPE STRING,
TAX_DATE TYPE STRING,
TAXJURCODE TYPE STRING,
TAX_PERCENT_RATE TYPE STRING,
ACCTASSCAT TYPE STRING,
ACCT_ASSGT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_EBS_DOC_BPITEM_TREE_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_FKK_EBS_DOC_BPITEM_TREE_STR-BUSPARTNER sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-CTRACT_ID sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-CONTRACT sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-NET_DATE sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-AMOUNT sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-TAX_ID sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-POS_ID1 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-POS_ID2 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-POS_ID3 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-POS_ID4 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-POS_ID5 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-TAX_DATE sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-TAXJURCODE sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-FINAL_RECIPIENT sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-CALC_PERLO sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-CALC_PERHI sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-ACCTASSCAT sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-ACCT_ASSGT sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-EXT_REF_1 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-EXT_REF_2 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-STAT_TAX_AMOUNT sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-REFERENCE_POSITION sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-PAYMENTMETHOD sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-PROFIT_CTR sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-GLITEM sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-AMOUNT sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-TAX_ID sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-POS_ID1 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-POS_ID2 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-POS_ID3 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-POS_ID4 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-POS_ID5 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-POS_ID6 sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-ACCTASSCAT sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-ACCT_ASSGT sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-QUANTITY sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-UNIT_OF_MEASURE sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-COPAITEMS sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-DEFREVITEMS sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-TAXITEM sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-TAX_BASE sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-AMOUNT sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-TAX_ID sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-SUB_TAX_ID sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-TAX_DATE sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-TAXJURCODE sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-TAX_PERCENT_RATE sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-ACCTASSCAT sy-vline 
WA_FKK_EBS_DOC_BPITEM_TREE_STR-ACCT_ASSGT sy-vline      INTO ld_text SEPARATED BY SPACE.

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