Fix for UNKNOWN DATABASE exception

[IlyaTsoi]

We get a UNKNOWN DATABASE exception because a connection string uses target DB.
runQuery() tries to execute CREATE DATABASE statement within an absent context. We can use multistatement as a workaround to execute CREATE DATABASE query within a system DB context

[subkanthi]

@IlyaTsoi can u please check why the test u added is failing, please pull latest from develop.

[IlyaTsoi]

@IlyaTsoi can u please check why the test u added is failing, please pull latest from develop.

I did try) But I can't reproduce this error in my environment, test passes successfully.

[subkanthi]

@IlyaTsoi can u please check why the test u added is failing, please pull latest from develop.

I did try) But I can't reproduce this error in my environment, test passes successfully.

Error connectingjava.sql.SQLException: Connection refused (Connection refused), server ClickHouseNode [uri=http://localhost:8123/test, options={client_name=Test_1}]@630096182

instead of localhost and 8123, you should get the host and port from clickHouseContainer.

        String hostName = clickHouseContainer.getHost();
        Integer port = clickHouseContainer.getFirstMappedPort();

[subkanthi]

extra semicolon