Denny Crane questions

Denny Crane answers

• Clickhouse: calculate a difference between two dates excluding some days (but not the weekends!)
• Query Clickhouse for currently installed version
• Streaming event data with dynamically changing schema into ClickHouse
• How can I group by distinct value into a (value,count) array in clickhouse?
• Fully delete data from Clickhouse DB to save disk space
• Clickhouse - "Too many partitions for single INSERT block"
• Clickhouse: Should i optimize MergeTree table manually?
• what is the best way to choose shard key in clickhouse?
• Will ordering of multiple groupArray aggregations be consistent with each other?
• Time comparison in ClickHouse