clickhouseSetting primary key for a table
CREATE TABLE tbl (event String, ts DateTime) ENGINE = MergeTree PARTITION BY toDate(ts) ORDER BY (event, ts)ctrl + ctblname of the table to create (and set primary key) | ORDER BYsorting order will also be used as primary key |
(event, ts)primary key (and table sorting order) columns | |
More of Clickhouse
- Convert datetime to unix timestamp
- Convert hex to text
- Select countIf usage example
- Create table example
- Add row number to results
- String concat
- List all tables from all database
- Select rows with certain value in array column
- How to get median value
- Create table with UUID column
See more codes...