I HAVE 40 MILLION RECORDS IN MY PERSON TABLE
I HAVE 100000 RECORDS FROM MY SOURCE TABLE WHICH I NEED TO COMPARE WITH PERSON TABLE AND DO AN INSERT,UPDATE OR DELETE ACCORDINGLY.
UPDATE IF PERSONID EXISTS ALREADY
INSERT IF NOT EXISTS
I AM USING SSIS 2008 AND LOOK UPS TO DO THIS,Can you suggest me how to do this most efficiently ?
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