Merge pull request #1007 from Mause/1004-bug-interval-columns-compile…

…-to-timestamp-without-time-zone

fix: use native interval support

duckdb_engine/__init__.py

@@ -234,7 +234,6 @@ class Dialect(PGDialect_psycopg2):
             # the psycopg2 driver registers a _PGNumeric with custom logic for
             # postgres type_codes (such as 701 for float) that duckdb doesn't have
             sqltypes.Numeric: sqltypes.Numeric,
-            sqltypes.Interval: sqltypes.Interval,
             sqltypes.JSON: sqltypes.JSON,
             UUID: UUID,
         },

duckdb_engine/tests/test_datatypes.py

@@ -6,14 +6,17 @@
 
 from packaging.version import Version
 from pytest import importorskip, mark
+from snapshottest.module import SnapshotTest
 from sqlalchemy import (
     Column,
     Integer,
+    Interval,
     MetaData,
     Sequence,
     String,
     Table,
     inspect,
+    schema,
     select,
     text,
 )
@@ -206,3 +209,9 @@ class Entry(base):
 
     assert result.struct == struct_data
     assert result.map == map_data
+
+
+def test_interval(engine: Engine, snapshot: SnapshotTest) -> None:
+    test_table = Table("test_table", MetaData(), Column("duration", Interval))
+
+    assert "duration INTERVAL" in str(schema.CreateTable(test_table).compile(engine))