clickhouse multiline query parsing problem

[umutbasal]

trickster/pkg/backends/clickhouse/handler_query.go

Line 55 in f31766c

if (!strings.HasPrefix(sqlQuery, "select ")) && (!(strings.Index(sqlQuery, " select ") > 0)) {

In the current implementation of the ClickHouse backend, there appears to be an issue when sending multiline SELECT queries. The code doesn't pass these queries to the delta cache; instead, it simply proxies the request.

SELECT
  toStartOfHour(...