benkrug commented on a change in pull request #10864:
URL: https://github.com/apache/druid/pull/10864#discussion_r572551503
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File path: docs/querying/datasource.md
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@@ -272,7 +272,7 @@ GROUP BY
Join datasources allow you to do a SQL-style join of two datasources. Stacking
joins on top of each other allows
you to join arbitrarily many datasources.
-In Druid {{DRUIDVERSION}}, joins are implemented with a broadcast hash-join
algorithm. This means that all tables
+In Druid {{DRUIDVERSION}}, joins are implemented with a broadcast hash-join
algorithm. This means that all datasources
other than the leftmost "base" table must fit in memory. It also means that
the join condition must be an equality. This
Review comment:
@techdocsmith thanks for looking at this! You're right, line 276 should
also use 'datasource' rather than 'table'. I forgot that neither side of a
join needs to be a table datasource. (I only caught the first because the
right-hand side *can't* be a table. But the left-hand side doesn't need to be
one, either.)
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