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Re: Add Foreign Keys To Table

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On 07/07/11 1:02 PM, Rich Shepard wrote:
On Thu, 7 Jul 2011, Alan Hodgson wrote:

create unique index index_name on table (column).

Alan,

  This worked like a charm.

Many thanks for the lesson,

Rich


if your original table has Primary Key of (sta_type, secondary_type) I would not expect EITHER of those fields to be unique by themselves.... Surely there can be more than one of the same sta_type with different secondary_type's, just as there could be more than one secondary_type with different sta_types.... if either of these fields is unique of and by itself, it doesn't make sense to use the combined primary key.




--
john r pierce                            N 37, W 122
santa cruz ca                         mid-left coast


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