cloud-fan commented on a change in pull request #26418: [SPARK-29783][SQL]
Support SQL Standard/ISO_8601 output style for interval type
URL: https://github.com/apache/spark/pull/26418#discussion_r345326064
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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@@ -1774,6 +1773,21 @@ object SQLConf {
.booleanConf
.createWithDefault(false)
+ object IntervalStyle extends Enumeration {
+ type IntervalStyle = Value
+ val SQL_STANDARD, ISO_8601, MULTI_UNITS = Value
+ }
+
+ val INTERVAL_STYLE = buildConf("spark.sql.intervalOutputStyle")
+ .doc("Display format for interval values. The value SQL_STANDARD will
produce output" +
Review comment:
display is not accurate as this controls the cast behavior as well. How
about `When converting interval values to strings (e.g. for display), this
config decides the interval string format. The value SQL_STANDARD ...`
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