[java] Is it possible to specify the schema when connecting to postgres with JDBC?

Is it possible? Can i specify it on the connection URL? How to do that?

I submitted an updated version of a patch to the PostgreSQL JDBC driver to enable this a few years back. You'll have to build the PostreSQL JDBC driver from source (after adding in the patch) to use it:

http://archives.postgresql.org/pgsql-jdbc/2008-07/msg00012.php

http://jdbc.postgresql.org/

If it is possible in your environment, you could also set the user's default schema to your desired schema:

ALTER USER user_name SET search_path to 'schema'

In Go with "sql.DB" (note the search_path with underscore):

postgres://user:password@host/dbname?sslmode=disable&search_path=schema

As of version 9.4, you can use the currentSchema parameter in your connection string.

For example:

jdbc:postgresql://localhost:5432/mydatabase?currentSchema=myschema

I don't believe there is a way to specify the schema in the connection string. It appears you have to execute

set search_path to 'schema'

after the connection is made to specify the schema.

Don't forget SET SCHEMA 'myschema' which you could use in a separate Statement

SET SCHEMA 'value' is an alias for SET search_path TO value. Only one schema can be specified using this syntax.

And since 9.4 and possibly earlier versions on the JDBC driver, there is support for the setSchema(String schemaName) method.

DataSource – setCurrentSchema

When instantiating a DataSource implementation, look for a method to set the current/default schema.

For example, on the PGSimpleDataSource class call setCurrentSchema.

org.postgresql.ds.PGSimpleDataSource dataSource = new org.postgresql.ds.PGSimpleDataSource ( );
dataSource.setServerName ( "localhost" );
dataSource.setDatabaseName ( "your_db_here_" );
dataSource.setPortNumber ( 5432 );
dataSource.setUser ( "postgres" );
dataSource.setPassword ( "your_password_here" );
dataSource.setCurrentSchema ( "your_schema_name_here_" );  // <----------

If you leave the schema unspecified, Postgres defaults to a schema named public within the database. See the manual, section 5.9.2 The Public Schema. To quote hat manual:

In the previous sections we created tables without specifying any schema names. By default such tables (and other objects) are automatically put into a schema named “public”. Every new database contains such a schema.