feat(clickhouse): add support for timestamp bucket

ibis/backends/clickhouse/compiler/values.py

@@ -436,6 +436,16 @@ def _truncate(op, *, arg, unit, **_):
     return converter(arg)
 
 
+@translate_val.register(ops.TimestampBucket)
+def _timestamp_bucket(op, *, arg, interval, offset, **_):
+    if offset is not None:
+        raise com.UnsupportedOperationError(
+            "Timestamp bucket with offset is not supported"
+        )
+
+    return F.toStartOfInterval(arg, interval)
+
+
 @translate_val.register(ops.DateFromYMD)
 def _date_from_ymd(op, *, year, month, day, **_):
     return F.toDate(

ibis/backends/tests/test_temporal.py

@@ -2518,7 +2518,6 @@ def test_delta(con, start, end, unit, expected):
 @pytest.mark.notimpl(
     [
         "bigquery",
-        "clickhouse",
         "dask",
         "datafusion",
         "flink",
@@ -2543,7 +2542,15 @@ def test_delta(con, start, end, unit, expected):
 @pytest.mark.parametrize(
     "kws, pd_freq",
     [
-        ({"milliseconds": 50}, "50ms"),
+        param(
+            {"milliseconds": 50},
+            "50ms",
+            marks=pytest.mark.notimpl(
+                ["clickhouse"],
+                raises=com.UnsupportedOperationError,
+                reason="clickhouse doesn't support sub-second interval precision",
+            ),
+        ),
         ({"seconds": 2}, "2s"),
         ({"minutes": 5}, "300s"),
         ({"hours": 2}, "2h"),
@@ -2560,7 +2567,6 @@ def test_timestamp_bucket(backend, kws, pd_freq):
 @pytest.mark.notimpl(
     [
         "bigquery",
-        "clickhouse",
         "dask",
         "datafusion",
         "flink",