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I am trying to fetch data from a view in Postgres using Java/ Vaadin. But I get error that table do not have primary key. But Postgres donot support keys on view.

Can someone help on how to do that query?

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Hi, can anyone help here? –  Damandeep Thakur May 18 at 6:37
    
What are you trying to do? Vaadin view has no relevance to Postgre or any other database. Could you clarify your question? –  user3551612 May 18 at 8:33
1  
How do you access your database? With the sqlcontainer, jpa or..... –  André Schild May 19 at 6:18
    
@user3551612: it's either Postgres or PostgreSQL but never Postgre –  a_horse_with_no_name May 24 at 16:37

1 Answer 1

up vote 2 down vote

you can make key to primary key in postgres like this

ALTER TABLE table_name ADD CONSTRAINT table_name_pkey PRIMARY KEY (col1, col2);

EDIT Use this link for query on view: queries for postgresql view

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The question is related to views; not tables. Can you suggest how to query on views? –  Damandeep Thakur May 17 at 19:20

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