Create a table in a database or add a default value to an existing column, I used Postgres: CREATE TABLE deb.mytable ( idnum integer NOT NULL, fullname text DEFAULT 'user name'::text, CONSTRAINT pk_idnum PRIMARY KEY (idnum) ) 2. Import that source into the designer 3. Try to Preview the data for that table that contains the default value 4. You'll get an error in the Designer and the server log will show the parsing error on the metadata load: 13:40:03,990 WARN [org.teiid.RUNTIME] (teiid-async-threads - 4) TEIID50036 VDB PREVIEW-32405570-21e1-4a40-ace7-21b408420884.1 model "debschema" metadata failed to load. Reason:TEIID30386 org.teiid.api.exception.query.QueryParserException: TEIID31100 Parsing error: Encountered ") DEFAULT '' [*] user [*] name'::text'" at line 4, column 47. Was expecting: "options" | "," | ")": org.teiid.metadata.ParseException: TEIID30386 org.teiid.api.exception.query.QueryParserException: TEIID31100 Parsing error: Encountered ") DEFAULT '' [*] user [*] name'::text'" at line 4, column 47. Was expecting: "options" | "," | ")" at org.teiid.query.parser.QueryParser.parseDDL(QueryParser.java:472) [teiid-engine-8.12.10.6_3-redhat-2.jar:8.12.10.6_3-redhat-2] at org.teiid.metadata.MetadataFactory.parse(MetadataFactory.java:769) [teiid-api-8.12.10.6_3-redhat-2.jar:8.12.10.6_3-redhat-2] at org.teiid.query.metadata.DDLMetadataRepository.loadMetadata(DDLMetadataRepository.java:40) [teiid-engine-8.12.10.6_3-redhat-2.jar:8.12.10.6_3-redhat-2] at org.teiid.runtime.AbstractVDBDeployer$MetadataRepositoryWrapper.loadMetadata(AbstractVDBDeployer.java:84) [teiid-runtime-8.12.10.6_3-redhat-2.jar:8.12.10.6_3-redhat-2] at org.teiid.query.metadata.ChainingMetadataRepository.loadMetadata(ChainingMetadataRepository.java:55) [teiid-engine-8.12.10.6_3-redhat-2.jar:8.12.10.6_3-redhat-2] at org.teiid.jboss.VDBService$6.run(VDBService.java:395) [teiid-jboss-integration-8.12.10.6_3-redhat-2.jar:8.12.10.6_3-redhat-2] at org.teiid.jboss.VDBService$7.run(VDBService.java:446) [teiid-jboss-integration-8.12.10.6_3-redhat-2.jar:8.12.10.6_3-redhat-2] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_60] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_60] at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_60] at org.jboss.threads.JBossThread.run(JBossThread.java:122) Caused by: org.teiid.api.exception.query.QueryParserException: TEIID31100 Parsing error: Encountered ") DEFAULT '' [*] user [*] name'::text'" at line 4, column 47. Was expecting: "options" | "," | ")" at org.teiid.query.parser.QueryParser.convertParserException(QueryParser.java:214) [teiid-engine-8.12.10.6_3-redhat-2.jar:8.12.10.6_3-redhat-2] ... 11 more 5. Deploying as VDB and querying works fine.