Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/2169#discussion_r69044111
--- Diff: docs/apis/table.md ---
@@ -536,6 +536,29 @@ Table result = left.unionAll(right);
</tr>
<tr>
+ <td><strong>Minus</strong></td>
+ <td>
+ <p>Similar to a SQL EXCEPT clause. Returns elements from the first
table that do not exist in the second table. Both tables must have identical
schema, i.e., field names and types.</p>
--- End diff --
Please rephrase to "Except returns records from the first table that do not
exist in the second table. Records that exist multiple times in the first table
are returned exactly once, i.e., duplicates are removed.".
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