srielau commented on code in PR #46267:
URL: https://github.com/apache/spark/pull/46267#discussion_r1595675243
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sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
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@@ -1700,6 +1700,16 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val VIEW_SCHEMA_BINDING_MODE = buildConf("spark.sql.viewSchemaBindingMode")
+ .doc("Set to DISABLE to disable the WITH SCHEMA clause for view DDL and
suppress the line in " +
+ " DESCRIBE EXTENDED. The default, and only other value, is COMPENSATION.
Views without " +
+ " WITH SCHEMA clause are defaulted to WITH SCHEMA COMPENSATION.")
Review Comment:
I was debating this. It would basically grandfather all existing views to an
explicit WITH SCHEMA BINDING.
But, IMHO, this causes more grief than benefit.
We want existing views to use WITH SCHEMA COMPENSATION, so we are protected
from future type resolution changes as the recent DECIMAL one.
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