Github user zentol commented on a diff in the pull request: https://github.com/apache/flink/pull/1885#discussion_r59711539 --- Diff: flink-batch-connectors/flink-jdbc/src/main/java/org/apache/flink/api/java/io/jdbc/JDBCInputFormat.java --- @@ -241,10 +264,31 @@ private void addValue(OUT reuse) throws IOException, SQLException { reuse.setField(resultSet.getDouble(pos + 1), pos); break; case java.sql.Types.DECIMAL: - reuse.setField(resultSet.getBigDecimal(pos + 1).doubleValue(), pos); - break; + //TODO manage null fields + try { + if (o == null){ + reuse.setField("", pos); + } else{ + reuse.setField(resultSet.getBigDecimal(pos + 1).toPlainString(), pos); --- End diff -- this seems inefficient. why not use resultSet.getBigDecimal right away and then check that fur == null?
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