Referential integrity: it was not allowed to delete a row with NULL in the parent table, if there was a row with NULL in the child table.

CREATE VIEW now supports the OR REPLACE clause

When creating functions within a schema, those functions could not be used in views, nested queries, and constraints.

Experimental feature to support case sensitive catalog names and database names using the DATABASE() method.

When creating functions within a schema, those functions could not be used in views, nested queries, and constraints.

Version 1.2.137 could still not be converted to Java 1.4 (because the Retrotranslator doesn't support BigDecimal.precision).

Statements with a nested query and a condition that was always NULL threw an IndexOutOfBoundsException.

(because disabling the cluster executes SET CLUSTER '', which committed the transaction).
Transaction are no longer committed when calling SET CLUSTER.
Cluster: non-admin users couldn't connect to the cluster and couldn't disable the cluster. Issue 201.

Cluster: NEXTVAL('sequence') was only called on one cluster node, therefore sequence values could get out of sync.

Version 1.2.136 could not be converted to Java 1.4 (because the Retrotranslator doesn't support BigDecimal.precision).