xuanyuanking commented on a change in pull request #27579: [SPARK-30829][SQL]
Define LegacyBehaviorPolicy enumeration as the common value for result change
configs
URL: https://github.com/apache/spark/pull/27579#discussion_r380084826
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
##########
@@ -2106,13 +2106,19 @@ object SQLConf {
.booleanConf
.createWithDefault(false)
- val LEGACY_CTE_PRECEDENCE_ENABLED =
buildConf("spark.sql.legacy.ctePrecedence.enabled")
+ object LegacyBehaviorPolicy extends Enumeration {
+ val EXCEPTION, LEGACY, CORRECTED = Value
+ }
+
+ val LEGACY_CTE_PRECEDENCE_POLICY =
buildConf("spark.sql.legacy.ctePrecedencePolicy")
.internal()
- .doc("When true, outer CTE definitions takes precedence over inner
definitions. If set to " +
- "false, inner CTE definitions take precedence. The default value is
empty, " +
+ .doc("When LEGACY, outer CTE definitions takes precedence over inner
definitions. If set to " +
+ "CORRECTED, inner CTE definitions take precedence. The default value is
EXCEPTION, " +
"AnalysisException is thrown while name conflict is detected in nested
CTE.")
Review comment:
Thanks, added in bc70f75.
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