alessandro-nori opened a new issue, #1627:
URL: https://github.com/apache/iceberg-python/issues/1627
### Apache Iceberg version
main (development)
### Please describe the bug 🐞
When a namespace is provided as a parameter,
SqlCatalog.list_namespaces(namespace) returns the namespace itself.
```
>>> import pyiceberg
>>> pyiceberg.__version__
'0.9.0'
>>> from pyiceberg.catalog.sql import SqlCatalog
>>> catalog = SqlCatalog("example", **{"uri":"sqlite:///:memory:",
"warehouse":"/tmp/pyiceberg/warehouse"})
>>> catalog.list_namespaces()
[]
>>> catalog.create_namespace("ns1.ns2")
>>> catalog.create_namespace("ns1.ns2.ns3")
>>> catalog.list_namespaces()
[('ns1', 'ns2'), ('ns1', 'ns2', 'ns3')]
>>> catalog.create_namespace("ns1")
>>> catalog.list_namespaces()
[('ns1',), ('ns1', 'ns2'), ('ns1', 'ns2', 'ns3')]
>>> catalog.list_namespaces("ns1")
[('ns1',)]
```
## Expected behavior
Similar to other catalog implementations, calling list_namespaces with a
namespace as a parameter should return only the sub-namespaces, excluding the
namespace itself.
e.g. for other python catalogs
- GlueCatalog:
https://github.com/apache/iceberg-python/blob/7a4734e26ed64d4b37f4a722e3b710e9866073ef/tests/catalog/integration_test_glue.py#L321
- DynamoDbCatalog:
https://github.com/apache/iceberg-python/blob/7a4734e26ed64d4b37f4a722e3b710e9866073ef/tests/catalog/integration_test_dynamodb.py#L213
And the for the JdbcCatalog in Java:
- Implementation reference:
https://github.com/apache/iceberg/blob/746e71931a35e83726852a60d7ca8cb6065e334f/core/src/main/java/org/apache/iceberg/jdbc/JdbcCatalog.java#L459-L460
- UnitTest:
https://github.com/apache/iceberg/blob/41b458b7022c7b0cd78eeca9102392db7889d3c9/core/src/test/java/org/apache/iceberg/jdbc/TestJdbcCatalog.java#L747
### Willingness to contribute
- [x] I can contribute a fix for this bug independently
- [ ] I would be willing to contribute a fix for this bug with guidance from
the Iceberg community
- [ ] I cannot contribute a fix for this bug at this time
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