A Req plugin for ClickHouse.
Assuming that you have a ClickHouse server running on localhost, this code is going to run:
Mix.install([
{:req_ch, "~> 0.1.0"}
])
req = ReqCH.new(database: "system")
ReqCH.query!(req, "SELECT number FROM numbers LIMIT 5").body
# => "0\n1\n2\n3\n4\n"
ReqCH.query!(req, "SELECT number FROM numbers WHERE number > {num:UInt8} LIMIT 5", [num: 12]).body
# => "13\n14\n15\n16\n17\n"It's also possible to return Explorer dataframes, if the :explorer package is installed
and the :explorer format is used:
Mix.install([
{:req_ch, "~> 0.1.0"},
{:explorer, "~> 0.10.0"}
])
req = ReqCH.new(database: "system")
ReqCH.query!(req, "SELECT number, number - 2 as less_two FROM numbers LIMIT 5", [], [format: :explorer]).body
# => #Explorer.DataFrame<
# Polars[5 x 2]
# number u64 [0, 1, 2, 3, 4]
# less_two s64 [-2, -1, 0, 1, 2]
# >See the documentation for details.
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