clickhouseUsing boolean values

Clickhouse doesn't support Boolean type, but you can use UInt8 (unsigned 1-byte integer) to implement that:

CREATE TABLE tbl (date Date, is_ok UInt8) ENGINE = MergeTree ORDER BY date;
INSERT INTO tbl VALUES(today(), 1); -- 1 for true
INSERT INTO tbl VALUES(today(), 0); -- 0 for false
SELECT * FROM tbl WHERE is_okctrl + cgithub

`is_ok` name of the boolean column	`UInt8` use unsigned integer to store `1` for true or `0` for false
`WHERE is_ok` will filter out rows with `is_ok = 0` (false) and show only rows with `is_ok = 1` (true)

More of Clickhouse

Convert datetime to unix timestamp
Convert hex to text
Select countIf usage example
Add row number to results
Create table example
String concat
List all tables from all database
Select rows with certain value in array column
Create table with UUID column
Insert array of strings in CSV format

See more codes...