Osisoft Translator - NULL values in numeric columns returned as zeroes ---------------------------------------------------------------------- Key: TEIID-5116 URL: https://issues.jboss.org/browse/TEIID-5116 Project: Teiid Issue Type: Bug Components: JDBC Connector Affects Versions: 8.12.x-6.4 Reporter: Andrej Šmigala Assignee: Ramesh Reddy Priority: Critical NULL values in columns with a numeric type (all of int8, int16 etc, single, double) are returned as 0. This is due to a bug/quirk of the Osisoft PI JDBC driver, which is hard-coded to return false from the wasNull method. On the Teiid side, the code in JDBCExecutionFactory.retrieveValue() assumes (completely reasonably) that the wasNull method is implemented correctly: {code:java} case DataTypeManager.DefaultTypeCodes.INTEGER: { int value = results.getInt(columnIndex); if(results.wasNull()) { return null; } return Integer.valueOf(value); } {code} I managed to workaround the bug in the PI JDBC driver by overriding the retrieveValue() in PIExecutionFactory and replacing the calls to wasNull like this: {code:java} case DataTypeManager.DefaultTypeCodes.INTEGER: { int value = results.getInt(columnIndex); if (results.getObject(columnIndex) == null) { return null; } return Integer.valueOf(value); } {code} but that probably isn't the best solution.