clickhouseGenerate test data for a table

This query will insert 10k rows into tbl rable:

INSERT INTO tbl(date, val) SELECT today(), number FROM numbers(10000)ctrl + cyoutubegithub

`tbl` table to insert generated data to	`date, val` columns to fill with generated data
`today()` set today value for `date` column	`, number` set `number` value for `col` column
`numbers(10000)` will generate 10k rows with `number` column value in a 1...10000 range