HyukjinKwon commented on code in PR #37490:
URL: https://github.com/apache/spark/pull/37490#discussion_r944472905
##########
python/pyspark/sql/catalog.py:
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@@ -184,38 +234,65 @@ def databaseExists(self, dbName: str) -> bool:
Parameters
----------
dbName : str
- name of the database to check existence
+ name of the database to check existence
+
+ .. versionchanged:: 3.4.0
+ Allow ``dbName`` to be qualified with catalog name.
Returns
-------
bool
Indicating whether the database exists
- .. versionchanged:: 3.4
- Allowed ``dbName`` to be qualified with catalog name.
-
Examples
--------
+ Check if 'test_new_database' database exists
+
>>> spark.catalog.databaseExists("test_new_database")
False
- >>> df = spark.sql("CREATE DATABASE test_new_database")
+ >>> _ = spark.sql("CREATE DATABASE test_new_database")
>>> spark.catalog.databaseExists("test_new_database")
True
+
+ Using the fully qualified name with the catalog name.
+
>>> spark.catalog.databaseExists("spark_catalog.test_new_database")
True
- >>> df = spark.sql("DROP DATABASE test_new_database")
+ >>> _ = spark.sql("DROP DATABASE test_new_database")
"""
return self._jcatalog.databaseExists(dbName)
@since(2.0)
Review Comment:
Yeah, thanks for pointing this out!
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