Fix for splink 4.0.4 #37
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Latest update to Splink clustering introduced ambiguities on Clickhouse side, so for now we just manually add necessary aliasing
Avoids new unrelated upstream issue, which will come in Splink 4.0.5
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Newest version of Splink introduced some changes to clustering SQL queries that are not directly compatible with Clickhouse's dialect.
The underlying cause seems to be the same kind of column-name-resolution rules in multi-joins that cause issues with term-frequency adjustments (see #31).
Probably any robust fix requires upstream changes, but for now something that works is string-replacing to manually add aliasing to the offending query. However this is not a good long-term solution (and probably doesn't even qualify as a 'good' short-term solution).
This solution doesn't affect earlier Splink versions so we don't need to bump the minimum version yet.
Also included is a skip of test that fails due to a Splink issue - we can unskip once there is a Splink version containing the fix for that available.