What I find wonderful is that while pioneering a new scale of SQL querying they chose to reproduce an existing standard.<p>[Port test cases from PostgreSQL to Spark SQL] <a href="https://issues.apache.org/jira/browse/SPARK-27763" rel="nofollow">https://issues.apache.org/jira/browse/SPARK-27763</a><p>[Feature Parity between PostgreSQL and Spark] <a href="https://issues.apache.org/jira/browse/SPARK-27764" rel="nofollow">https://issues.apache.org/jira/browse/SPARK-27764</a>