How to use SET statements?

[kesavkolla]

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Postgres allow to add SET statements to set some parameters.

Eg: SET datestyle TO postgres, dmy; SET TIME ZONE 'America/Los_Angeles';

How can use these SET statements as part of executing query?

Eg: I would like to run this

SET TIME ZON 'America/Los_Angeles'; SELECT NOW()

Execute batch is not returning results so can't use executeBatch method. Is there any way to achieve this?