quastions about primary key - Mailing list pgsql-sql

From jack
Subject quastions about primary key
Date
Msg-id 00c301c2c374$1e698650$1400a8c0@jac
Whole thread Raw
Responses Re: quastions about primary key
List pgsql-sql
Is that possible to have a two columns primary key on a table with null
value on second column?

Jack



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