Denis Glazachev

Which platform are you using? Does your DSN point to Unicode version of the driver?

Can you retrieve those characters in Excel, and see if that works. Here's how to do it Excel: https://altinity.com/blog/connecting-excel-to-clickhouse-using-the-windows-odbc-driver Go directly to `Connecting to ClickHouse from Excel` section and use...

> Excel works fine Greek characters work. This suggests that the problem is most probably on the side of the client tool (TARGIT BI), and the driver passes letters as...

Without being able to quickly reproduce, I won't be able to suggest anything else. The narrow-char string data is treated as UTF-8 by default.

This is related to clickhouse server and clickhouse-odbc-bridge, not clickhouse-odbc driver. I suggest moving the discussion to https://github.com/ClickHouse/ClickHouse/issues.

This is an error from ClickHouse server. It says id doesn't know what `X_measure__1` is. Do you have such column? Who put it in the query, you or Tableau?

Try using the driver via https://github.com/Altinity/clickhouse-tableau-connector-odbc

Related to #236

Could you please check with the recent version of the driver? https://github.com/ClickHouse/clickhouse-odbc/releases/tag/v1.1.8.20200710

@eabuchan could you please send the SQL query and the HTTP request from ODBC driver, as logged at server side. You should see the log entry right before the error.