sarahyurick commented on code in PR #3763:
URL: https://github.com/apache/arrow-datafusion/pull/3763#discussion_r992663284
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datafusion/sql/src/planner.rs:
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@@ -5309,6 +5456,19 @@ mod tests {
assert!(logical_plan("SELECT \"1\"").is_err());
}
+ #[test]
+ fn test_datetime_keyword_conversion() {
+ // Field "year" does not exist in table.
+ let sql_expr = "SELECT AVG(year) FROM person";
+ let err1 = logical_plan(sql_expr).expect_err("query should have
failed");
+ assert_plan_error(err1, "Avg");
Review Comment:
The general idea of this test is that originally, the query would have
failed with a "Field Not Found" error because "year" isn't in the "person"
table. However, because Avg is a function and "year" isn't in the table, we
want to convert "year" to a datetime keyword to check if it is valid, so with
my changes it fails with a "The function Avg does not support inputs of type
Utf8" instead.
This is a pretty roundabout way of testing the functionality, but because
these changes were implemented to allow datetime keyword conversion before
calling something like Timestampadd in Dask-SQL, which DataFusion does not
support, this was the alternative testing method I came up with.
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