WHAT IS CARTESIAN PRODUCT?
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Cartesian product:- It is a type of join in which the
number of rows in the result table is the product of the
number of rows in each table.It is also called as CROSS JOIN
Eg:-
SELECT * FROM A,B
or (can be writen as)
SELECT * FROM A CROSS JOIN B
if A has 10 records n B has 8 records than the output of
above query will b 80 records(10*8=80 RECORDS).
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Answer / surya
Once the data is display in M*N format from two different
tables which has m rows in one table and n rows in another
table.We can called as cartesian product.
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CREATE OR REPLACE procedure XXPROC_OPENINT(errbuf OUT VARCHAR2, retcode OUT VARCHAR2) AS --Cursor Declaration cursor inv_cur IS SELECT INVI.INVOICE_ID ,INVI.INVOICE_TYPE_LOOKUP_CODE ,INVI.INVOICE_DATE ,INVI.VENDOR_ID ,INVI.VENDOR_SITE_ID ,INVI.INVOICE_AMOUNT ,INVI.INVOICE_CURRENCY_CODE ,INVI.STATUS ,INVI.GROUP_ID ,INVI.SOURCE ,INVI.ORG_ID ,INVI.DESCRIPTION ,INVI.CREATION_DATE ,INVI.CREATED_BY ,INVL.INVOICE_ID ,INVL.LINE_NUMBER ,INVL.LINE_TYPE_LOOKUP_CODE ,INVL.DESCRIPTION ,INVL.ORG_ID ,INVL.INVENTORY_ITEM_ID ,INVL.ACCOUNTING_DATE ,INVL.AMOUNT ,INVL.CREATION_DATE ,INVL.CREATED_BY ,INVL.PO_HEADER_ID ,INVL.PO_LINE_LOCATION_ID ,INVL.ITEM_DESCRIPTION FROM XXAP_INVOICES_INTERFACE_STG INVI ,AP_INVOICE_LINES_INTERFACE_STG INVL WHERE INVI.INVOICE_ID=INVL.INVOICE_ID AND INVI.ORG_ID=INVL.ORG_ID; l_currency_code varchar2(25); l_flag varchar2(2); l_error_msg varchar2(100); l_err_msg varchar2(100); l_err_flag varchar2(10); l_count number(9) default 0; BEGIN for rec_cur in inv_cur loop l_count:=l_count+1; --Currency Code Validation BEGIN SELECT currency_code INTO l_currency_code FROM FND_CURRENCIES WHERE currency_code ='USD'; EXCEPTION WHEN others THEN l_flag:='E'; l_error_msg:='Currency Code Does not Exists'; fnd_file.put_line(fnd_file.log,'Inserting Data Into The Interface Table'||'-'||l_count||' '||l_error_msg); END; IF l_flag!='E' THEN fnd_file.put_line(fnd_file.log,'Inserting Data Into The Interface Table'); INSERT INTO AP_INVOICES_INTERFACE( INVOICE_ID ,INVOICE_TYPE_LOOKUP_CODE ,INVOICE_DATE ,VENDOR_ID ,VENDOR_SITE_ID ,INVOICE_AMOUNT ,INVOICE_CURRENCY_CODE ,STATUS ,GROUP_ID ,SOURCE ,ORG_ID ,DESCRIPTION ,CREATION_DATE ,CREATED_BY) VALUES (rec_cur.INVOICE_ID ,rec_cur.INVOICE_TYPE_LOOKUP_CODE ,rec_cur.INVOICE_DATE ,rec_cur.VENDOR_ID ,rec_cur.VENDOR_SITE_ID ,rec_cur.INVOICE_AMOUNT ,rec_cur.INVOICE_CURRENCY_CODE ,rec_cur.STATUS ,rec_cur.GROUP_ID ,rec_cur.SOURCE ,rec_cur.ORG_ID ,rec_cur.DESCRIPTION ,rec_cur.CREATION_DATE ,rec_cur.CREATED_BY); INSERT INTO ap_invoice_lines_interface ( INVOICE_ID ,LINE_NUMBER ,LINE_TYPE_LOOKUP_CODE ,DESCRIPTION ,ORG_ID ,INVENTORY_ITEM_ID ,ACCOUNTING_DATE ,AMOUNT ,CREATION_DATE ,CREATED_BY ,PO_HEADER_ID ,PO_LINE_LOCATION_ID,ITEM_DESCRIPTION) VALUES (rec_cur.INVOICE_ID ,rec_cur.LINE_NUMBER ,rec_cur.LINE_TYPE_LOOKUP_CODE ,rec_cur.DESCRIPTION ,rec_cur.ORG_ID ,rec_cur.INVENTORY_ITEM_ID ,rec_cur.ACCOUNTING_DATE ,rec_cur.AMOUNT ,rec_cur.CREATION_DATE ,rec_cur.CREATED_BY ,rec_cur.PO_HEADER_ID ,rec_cur.PO_LINE_LOCATION_ID ,rec_cur.ITEM_DESCRIPTION); END IF; l_flag:=NULL; l_err_MSG:=NULL; END LOOP; COMMIT; END XXPROC_OPENINT; / PLS-00402: alias required in SELECT list of cursor to avoid duplicate column names
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