Re: Howto define a constraint in a existing column - Mailing list pgsql-novice

Thanks worked like a charm

On 09/08/2009, Thomas Kellerer <spam_eater@gmx.net> wrote:
> Intengu Technologies wrote on 09.08.2009 11:23:
>> I am tying to define a primary key constraint to an existing table,
>> this is what I have tried so far
>>
>> ALTER TABLE mytable ALTER COLUMN field13 CONSTRAINT name PRIMARY KEY;
>>
>> I get the following error: ERROR: syntax error at or near "CONSTRAINT"
>> SQL state: 42601
>> Character: 61
>>
> That should be
>
> ALTER TABLE mytable
>     ADD PRIMARY KEY (field13);
>
> Or if you want to give the constraint a name:
>
> ALTER TABLE mytable
>     ADD CONSTRAINT pk_mytable PRIMARY KEY (field13);
>
> Thomas
>
>
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