Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/21470#discussion_r192309419
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala
---
@@ -2696,16 +2687,6 @@ class SQLQuerySuite extends QueryTest with
SharedSQLContext {
sql("SELECT struct(1 a) EXCEPT (SELECT struct(2 A))")
}.message
assert(m2.contains("Except can only be performed on tables with the
compatible column types"))
-
- withTable("t", "S") {
- sql("CREATE TABLE t(c struct<f:int>) USING parquet")
- sql("CREATE TABLE S(C struct<F:int>) USING parquet")
- checkAnswer(sql("SELECT * FROM t, S WHERE t.c.f = S.C.F"),
Seq.empty)
- val m = intercept[AnalysisException] {
- sql("SELECT * FROM t, S WHERE c = C")
- }.message
- assert(m.contains("cannot resolve '(t.`c` = S.`C`)' due to data
type mismatch"))
--- End diff --
Thank you for pinging me, @cloud-fan .
Since this removal is a real behavior change instead of new test coverage
of `comparator.sql`, could you add a documentation for this?
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