cloud-fan commented on a change in pull request #27804:
[SPARK-31020][SPARK-31023][SPARK-31025][SPARK-31044][SQL] Support foldable args
by `from_csv/json` and `schema_of_csv/json`
URL: https://github.com/apache/spark/pull/27804#discussion_r388260818
##########
File path: sql/core/src/test/resources/sql-tests/results/csv-functions.sql.out
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@@ -24,7 +24,7 @@ select from_csv('1', 1)
struct<>
-- !query output
org.apache.spark.sql.AnalysisException
-Schema should be specified in DDL format as a string literal or output of the
schema_of_csv function instead of 1;; line 1 pos 7
+The expression '1' must be evaluated to a valid string.;; line 1 pos 7
Review comment:
and as an error message, seems better to have `The expression '1' is not a
valid schema string.`
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