Error when binding NULL to nullable parameter in a prepared statement with PDO PostgreSQL ODBC client

1. Use Docker to install and configure the following containers a. PostgreSQL database (library/postgres:latest) b. Teiid with Wildfly (jboss/teiid:latest) c. Apache/PHP (php:7.1-apache) 2. For Teiid deploy JDBC driver for PostgreSQL (latest from Maven) and create a datasource in standalone-teiid.xml 3. For PHP, install PDO extension (pdo_pgsql) for PostgreSQL, in Dockerfile, using docker-php-ext-install, for example. 4. Create a table in Postgres DB with an optional (nullable) field CREATE TABLE public .foobar ( id int4 NOT NULL , optional varchar NULL , CONSTRAINT foobar_pk PRIMARY KEY (id) ); 5. In Teiid create and deploy a VDB with a model using the above Postgres datasource. 6. In PHP try to create a prepared statement for an INSERT into the table created above and bind a null value to the optional parameter. $dbh = new PDO( 'pgsql:host=<teiid_host>;port=35432;dbname=<vdb_name>;user=<teiid_user>;password=<teiid_password>' ); $stmt = $dbh ->prepare("INSERT INTO foobar (id, optional) VALUES(?, ?)"); $stmt ->bindValue(1, 1); $stmt ->bindValue(2, null , PDO::PARAM_NULL); $stmt ->execute(); The exception is thrown. As a temporary fix we changed the code in org.teiid.transport.PgFrontendProtocol class method "buildBind" to // ... for ( int i = 0; i < paramCount; i++) { int paramLen = data.readInt(); // do not create an array for paramLen = -1 if (paramLen == -1){ continue ; } // ... } After deploying this change (in a JAR teiid-runtime-11.2.0.jar) to WildFly the binding seems to work.