> On Aug 27, 2018, at 1:50 PM, Daniel J Peacock <bluedanunit(at)gmail(dot)com> wrote:
>
> Good afternoon, all.
> I've got an odd situation with a table that has a varchar(255) as the primary key that is getting key values from an Elasticsearch engine. What I'm finding is that even though there is a primary key on the table, I am getting duplicated keys in the data and the constraint is not blocking these. When I do a "select <pk_field>,count(*) from <table> group by <pk_field> having count(*) > 1" I get no results. Yet, when I search the table for a value that is like a key I know to be duplicated, I get multiple results. When I select from the table where field is equal to the duplicated field I get one result. I verified that they are distinct row with ctid. I also created a clone of the table with CTAS and then tried to create a unique index on the id varchar field but that failed with "duplicate keys found". I'm stumped as to what could be the problem.
> The only thing that I can think of is that the primary key is somehow corrupt. I've noticed this behavior on other tables on this database.
> What could be causing this sort of problem?
>
> Thanks in advance for any insights.
>
> Dan Peacock
> Auto-wares, Inc.
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