srielau commented on code in PR #46267:
URL: https://github.com/apache/spark/pull/46267#discussion_r1591605730
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
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@@ -1700,6 +1700,21 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val VIEW_SCHEMA_BINDING = buildConf("spark.sql.defaultViewSchemaBinding")
+ .doc("Control the default behavior of views when the underlying schema
changes. " +
+ "Valid values are: " +
+ "'BINDING': Safe casts only. " +
+ "'COMPENSATION': Any supported casts. " +
+ "'TYPE EVOLUTION': Adopt type changes." +
+ "'EVOLUTION': Adopt names, types and arity." +
+ "'UNSUPPORTED': Disable the feature.")
+ .version("4.0.0")
+ .stringConf
+ .transform(_.toUpperCase(Locale.ROOT))
+ .checkValues(Set("BINDING", "COMPENSATION", "TYPE EVOLUTION", "EVOLUTION",
"UNSUPPORTED"))
Review Comment:
If we do this, would we also need to change it in the grammar for CREATE
VIEW?
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