cloud-fan commented on a change in pull request #30586:
URL: https://github.com/apache/spark/pull/30586#discussion_r536046399
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/CharVarcharUtils.scala
##########
@@ -52,6 +54,15 @@ object CharVarcharUtils {
dt.existsRecursively(f => f.isInstanceOf[CharType] ||
f.isInstanceOf[VarcharType])
}
+ /**
+ * Validate the given [[DataType]] to fail if it is char or varchar types or
contains nested ones
+ */
+ def failIfHasCharVarchar(dt: DataType): Unit = {
+ if (hasCharVarchar(dt)) {
+ throw new AnalysisException(s"char/varchar type can only be used in the
table schema")
Review comment:
can we add a legacy config to avoid errors?
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