How can I get ResultSetMetaData without actual execution query ?

[tac0x2a]

Hello.

Now, I'm trying to implement of ClichHousePreparedStatementImpl#getMetaData() for making runnable on embulk-input-jdbc.

This implementation of method needs result of execution query first.
But we don't want to execute query actual.
So I want to know how can I get ResultSetMetaData without execute query actual like QUERY_DESCRIBE_ONLY in pgjdbc.

I guess, it is possible by setting arguments additionalDBParams or additionalRequestParams for ClickHouseStatementImpl#executeQuery....

Best regards,

[serebrserg]

Hello. To get metadata without executing query one should add limit 0 to the query.
Connecting the issue with your PR #238

[enqueue]

@tac0x2a have you tried querying meta data using a recent clickhouse-jdbc release? What are your experiences?