Support MySQL utf8mb4 encoding

When fetching data from a table with charset utf8mb4, columns are not decoded correctly:

Is it possible to set JDBC driver options through the UI?

@fabiocorneti sorry to hear that! Unfortunately, we don’t yet support passing driver options. This is something we are considering as a future improvement. We’ll reach out once available.

We have solved this problem and need to modify the calcite source code by decompiling

@JoyJava will we get this ability to pass the JDBC properties to Dremio (either through WebUI or through rest api) in next release?

Hi JoyJava, Can you share how to modify the source code of calcite?