How to avoid duplicates in clickhouse table?

Question

I have created table and trying to insert the values multiple time to check the duplicates. I can see duplicates are inserting. Is there a way to avoid duplicates in clickho

Answer 1

Most likely ReplacingMergeTree is what you need as long as duplicate records duplicate primary keys. You can also try out other MergeTree engines for more actions when replicate record is encountered. FINAL keyword can be used when doing queries to ensure uniquity.