AngersZhuuuu commented on a change in pull request #31378:
URL: https://github.com/apache/spark/pull/31378#discussion_r569093116
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File path: docs/sql-migration-guide.md
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@@ -56,6 +56,8 @@ license: |
In Spark 3.1 and earlier, table refreshing leaves dependents uncached.
- In Spark 3.2, the usage of `count(tblName.*)` is blocked to avoid
producing ambiguous results. Because `count(*)` and `count(tblName.*)` will
output differently if there is any null values. To restore the behavior before
Spark 3.2, you can set
`spark.sql.legacy.allowStarWithSingleTableIdentifierInCount` to `true`.
+
+ - In Spark 3.2, a `SHOW TBLPROPERTIES` clause's output both show `key` and
`value` columns whether `propertyKey` is defined. In Spark 3.1 and earlier, a
`SHOW TBLPROPERTIES` clause's output only show a `value` column when
`propertyKey` is defined.
Review comment:
> `propertyKey` is also an internal variable name?
Updated to `whether you specify property key`. How about current? also ping
@cloud-fan
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