Dandandan commented on a change in pull request #1068:
URL: https://github.com/apache/arrow-datafusion/pull/1068#discussion_r720865004
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File path: datafusion/src/sql/planner.rs
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@@ -3440,7 +3453,7 @@ mod tests {
let sql = "SELECT order_id from orders EXCEPT SELECT order_id FROM
orders";
let err = logical_plan(sql).expect_err("query should have failed");
assert_eq!(
- "NotImplemented(\"Only UNION ALL is supported, found EXCEPT\")",
+ "NotImplemented(\"Only UNION ALL and UNION are supported, found
EXCEPT\")",
Review comment:
```suggestion
"NotImplemented(\"Only UNION ALL and UNION [DISTINCT] are
supported, found EXCEPT\")",
```
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