Return proper error when user tries to enable transactions#659

zhicwu merged 3 commits intoClickHouse:developClickHouse/clickhouse-java:developfrom

findepi:findepi/return-proper-error-when-user-tries-to-enable-transactions-5e522ffindepi/clickhouse-jdbc:findepi/return-proper-error-when-user-tries-to-enable-transactions-5e522fCopy head branch name to clipboard