Question

Is any way to check a database is already exists or not in PostgreSQL?

Iam a new one in PostgreSQL.
And also need to check it from my java application via jdbc driver.

Answer 1

I found an alternate solution for this problem. By using the following query :

       ResultSet res = st.executeQuery("select count(*) from pg_catalog.pg_database where datname = 'sample'") ;
       res.next();
       int count = res.getInt("count");
       System.out.println("Count : " + count);
       if(count == 0) {
         st.executeUpdate("CREATE DATABASE sample");
       }

Its work fine