Incorrect work of left join statement

1. In postgresql create the tbl_1 table by the following script: create table test_tables. public .test_emails(email varchar (4000)); insert into test_tables. public .test_emails values ( 'Test1@mail.com' ); insert into test_tables. public .test_emails values ( 'test2@mail.com' ); insert into test_tables. public .test_emails values ( 'test3@mail.com' ); 2. Add postgresql database configuration in standalone-teiid.xml <datasource jndi-name= "java:/test_tables" pool-name= "test_tables" enabled= "true" use-java-context= "true" > <connection-url> jdbc:postgresql://localhost:5432/test_tables?charSet=utf8 </connection-url> <driver-class> org.postgresql.Driver </driver-class> <driver> org.postgresql </driver> <pool> <min-pool-size> 2 </min-pool-size> <max-pool-size> 70 </max-pool-size> <prefill> false </prefill> <use-strict-min> false </use-strict-min> <flush-strategy> FailingConnectionOnly </flush-strategy> </pool> <security> <user-name> postgres </user-name> <password> xxxxxx </password> </security> <validation> <check-valid-connection-sql> select 0 </check-valid-connection-sql> </validation> <timeout> <blocking-timeout-millis> 120000 </blocking-timeout-millis> <idle-timeout-minutes> 5 </idle-timeout-minutes> </timeout> </datasource> 3. Add in test-vdb.xml java:/test_pg configured in previous step as datasource: <model name= "test_tables" > <property name= "importer.useFullSchemaName" value= "false" /> <property name= "importer.tableTypes" value= "TABLE,VIEW" /> <property name= "importer.importKeys" value= "false" /> <source name= "test_tables" translator-name= "myPg" connection-jndi name= "java:/test_tables" /> </model> 4. Configure in test-vdb.xml the following virtual view: <model visible = "true" type = "VIRTUAL" name = "views" > <metadata type = "DDL" > <![CDATA[ CREATE virtual view test_view_emails as SELECT 'test1@mail.com' as email ]]> </metadata> </model> 5. Run the test query mentioned in description field: SELECT a .email, b.email, lower ( a .email), lower (b.email) FROM test_tables.test_emails as a left join views.test_view_emails as b on lower ( a .email)= lower (b.email); and compare results gotten via teiid and PostgreSQL.