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Comment inline:

Lynne Stevens wrote:

omega The Omega sector America's Last Line of Defense

*That sounds like they will be merged ! . . They are to remain
separate and the "B" file is to be used for a mailing thing after it
has the duplicates removed . . the mailing thing I have figured out
and what fields/columns to use ! !

     You need to be more specific in your description. You began with
two databases that you want to check for duplicates. It has now become clear that you are working with two tables. And then you mentioned fields. What fields exist in these two tables? What determines whether a row in the "B" table is a duplicate based upon what is contained in table "A"? The simple answer to your question: the same way that you would do it by hand. The only problem with this answer is that it does not include any specifics. If you would write down how you would do this by hand step by step, then we would know what has to be done step by step, and we could suggest how to do each step. You might even see how to do it by yourself.


* On 07/28/2012 06:38 AM, Andreas Säger wrote:
Am 28.07.2012 14:17, Lynne Stevens wrote:

omega The Omega sector America's Last Line of Defense

*How do I check for duplicates in a data base using another data
base ?


SELECT "A".* FROM "A" JOIN "B" ON "A"."ID" = "B"."ID"

returns all rows from table A with an equivalent ID in table B.

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