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Ideas - Feel free to post ideas. #82
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Livebook smart cell :) |
Streaming the results of queries would be great. I think it requires setting the connection mode to active though. |
There is an undocumented Here's a minimal example: {:ok, pid} = Ch.start_link()
Ch.run(pid, fn conn ->
conn
|> Ch.stream("select number from system.numbers limit {limit:UInt64}", %{"limit" => 1_000_000}, types: ["UInt64"])
|> Stream.each(fn rows -> IO.puts("at #{Time.utc_now()} got #{length(List.flatten(rows))} rows") end)
|> Stream.run()
end)
And some tests. |
That's great! Will it support not having to specify |
@hkrutzer yeah, most likely. We'd "just" need to decode types from |
is there a way to hook into clickhouse's WATCH functionality? |
I think that functionality is deprecated and will be removed: https://clickhouse.com/docs/en/sql-reference/statements/create/view#live-view-deprecated |
I wasn't able to create a live view on eb6fbe5ed437 :) CREATE LIVE VIEW lv WITH REFRESH 5 AS SELECT now();
Syntax error: failed at position 21 ('WITH'):
CREATE LIVE VIEW lv WITH REFRESH 5 AS SELECT now();
Expected one of: token, Dot, UUID, ON, TO, OpeningRoundBracket, sql security, DEFINER, SQL SECURITY, AS I expect something like this to work, {:ok, pid} = Ch.start_link(pool_size: 1)
DBConnection.run(pid, fn conn ->
Ch.stream(conn, "watch lv format JSONEachRowWithProgress")
|> Stream.each(&IO.inspect/1)
|> Stream.run()
end, timeout: :infinity) |
Did you run |
No, but it doesn't seem to have changed much. Somehow it's a syntax error. eb6fbe5ed437 :) set allow_experimental_live_view = 1;
SET allow_experimental_live_view = 1
Query id: e40f3eb8-548e-4b3d-bc0e-8f92456f076c
Ok.
0 rows in set. Elapsed: 0.001 sec.
eb6fbe5ed437 :) CREATE LIVE VIEW lv WITH REFRESH 5 AS SELECT now();
Syntax error: failed at position 21 ('WITH'):
CREATE LIVE VIEW lv WITH REFRESH 5 AS SELECT now();
Expected one of: token, Dot, UUID, ON, TO, OpeningRoundBracket, sql security, DEFINER, SQL SECURITY, AS
eb6fbe5ed437 :) |
ah okay, thank you! 🙇 |
Feel free to post ideas.
That idea itself is stolen from containers/youki#10
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