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From Tom Lane
Subject Re:
Date
Msg-id 25546.1038630508@sss.pgh.pa.us
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In response to  ("A.M." <agentm@cmu.edu>)
Responses Re:  ("A.M." <agentm@cmu.edu>)
List pgsql-sql
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"A.M." <agentm@cmu.edu> writes:
> In summary, what I want is

>   field INT8 REFERENCES sometable NULL OK

Er ... NULL *is* OK, unless you say
  field INT8 REFERENCES sometable NOT NULL
        regards, tom lane

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