Failing default boolean value in a Directory schema with Oracle / MSSql

Seen on those jobs:
http://qa.nuxeo.org/jenkins/job/FT-nuxeo-master-webdriver-dm-tomcat-multiosdb/1094/Slave=MULTIDB_LINUX,dbprofile=mssql,jdk=openjdk-7-jdk/

http://qa.nuxeo.org/jenkins/job/FT-nuxeo-master-webdriver-dm-tomcat-multiosdb/1094/Slave=MULTIDB_WINDOWS,dbprofile=mssql,jdk=openjdk-7-jdk/

http://qa.nuxeo.org/jenkins/job/FT-nuxeo-master-selenium-dm-tomcat-multiosdb/1390/Slave=MULTIDB_WINDOWS,dbprofile=mssql,jdk=openjdk-7-jdk/

http://qa.nuxeo.org/jenkins/job/FT-nuxeo-master-selenium-dm-tomcat-multiosdb/1390/Slave=MULTIDB_LINUX,dbprofile=mssql,jdk=openjdk-7-jdk/

=> org.nuxeo.ecm.directory.DirectoryException: Table 'Table(oauth2Clients)' creation failed: The name "true" is not permitted in this context. Valid expressions are constants, constant expressions, and (in some contexts) variables. Column names are not permitted.