diff --git a/adbc_drivers_validation/queries/type/select/timestamp0.txtcase b/adbc_drivers_validation/queries/type/select/timestamp0.txtcase
new file mode 100644
index 0000000..44ade4f
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp0.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamp"
+
+[tags]
+sql-type-name = "TIMESTAMP(0)"
+field-type-name = "TIMESTAMP(0)"
+
+// part: setup_query
+
+CREATE TABLE test_timestamp (
+    idx INTEGER,
+    res TIMESTAMP(0)
+);
+
+INSERT INTO test_timestamp (idx, res) VALUES (1, TIMESTAMP '2023-05-15 13:45:30');
+INSERT INTO test_timestamp (idx, res) VALUES (2, TIMESTAMP '2000-01-01 00:00:00');
+INSERT INTO test_timestamp (idx, res) VALUES (3, TIMESTAMP '1969-07-20 20:17:40');
+INSERT INTO test_timestamp (idx, res) VALUES (4, TIMESTAMP '0001-01-01 00:00:00');
+INSERT INTO test_timestamp (idx, res) VALUES (5, TIMESTAMP '9999-12-31 23:59:59');
+INSERT INTO test_timestamp (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamp ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tss:",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330}
+{"res": 946684800}
+{"res": -14182940}
+{"res": -62135596800}
+{"res": 253402300799}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp0tz.txtcase b/adbc_drivers_validation/queries/type/select/timestamp0tz.txtcase
new file mode 100644
index 0000000..113718a
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp0tz.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamptz"
+
+[tags]
+sql-type-name = "TIMESTAMP(0) WITH TIME ZONE"
+field-type-name = "TIMESTAMP(0) WITH TIME ZONE"
+
+// part: setup_query
+
+CREATE TABLE test_timestamptz (
+    idx INTEGER,
+    res TIMESTAMP(0) WITH TIME ZONE
+);
+
+INSERT INTO test_timestamptz (idx, res) VALUES (1, TIMESTAMP WITH TIME ZONE '2023-05-15 13:45:30+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (2, TIMESTAMP WITH TIME ZONE '2000-01-01 00:00:00+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (3, TIMESTAMP WITH TIME ZONE '1969-07-20 20:17:40+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (4, TIMESTAMP WITH TIME ZONE '0001-01-01 00:00:00+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (5, TIMESTAMP WITH TIME ZONE '9999-12-31 23:59:59+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamptz ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tss:UTC",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330}
+{"res": 946684800}
+{"res": -14182940}
+{"res": -62135596800}
+{"res": 253402300799}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp1.txtcase b/adbc_drivers_validation/queries/type/select/timestamp1.txtcase
new file mode 100644
index 0000000..faf7d3b
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp1.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamp"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (1 <= p <= 3)"
+field-type-name = "TIMESTAMP(1)"
+
+// part: setup_query
+
+CREATE TABLE test_timestamp (
+    idx INTEGER,
+    res TIMESTAMP(1)
+);
+
+INSERT INTO test_timestamp (idx, res) VALUES (1, TIMESTAMP '2023-05-15 13:45:30.1');
+INSERT INTO test_timestamp (idx, res) VALUES (2, TIMESTAMP '2000-01-01 00:00:00.2');
+INSERT INTO test_timestamp (idx, res) VALUES (3, TIMESTAMP '1969-07-20 20:17:40.3');
+INSERT INTO test_timestamp (idx, res) VALUES (4, TIMESTAMP '0001-01-01 00:00:00.0');
+INSERT INTO test_timestamp (idx, res) VALUES (5, TIMESTAMP '9999-12-31 23:59:59.9');
+INSERT INTO test_timestamp (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamp ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsm:",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330100}
+{"res": 946684800200}
+{"res": -14182939700}
+{"res": -62135596800000}
+{"res": 253402300799900}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp1tz.txtcase b/adbc_drivers_validation/queries/type/select/timestamp1tz.txtcase
new file mode 100644
index 0000000..2bfe589
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp1tz.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamptz"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (1 <= p <= 3) WITH TIME ZONE"
+field-type-name = "TIMESTAMP(1) WITH TIME ZONE"
+
+// part: setup_query
+
+CREATE TABLE test_timestamptz (
+    idx INTEGER,
+    res TIMESTAMP(1) WITH TIME ZONE
+);
+
+INSERT INTO test_timestamptz (idx, res) VALUES (1, TIMESTAMP WITH TIME ZONE '2023-05-15 13:45:30.1+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (2, TIMESTAMP WITH TIME ZONE '2000-01-01 00:00:00.2+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (3, TIMESTAMP WITH TIME ZONE '1969-07-20 20:17:40.3+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (4, TIMESTAMP WITH TIME ZONE '0001-01-01 00:00:00.0+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (5, TIMESTAMP WITH TIME ZONE '9999-12-31 23:59:59.9+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamptz ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsm:UTC",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330100}
+{"res": 946684800200}
+{"res": -14182939700}
+{"res": -62135596800000}
+{"res": 253402300799900}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp2.txtcase b/adbc_drivers_validation/queries/type/select/timestamp2.txtcase
new file mode 100644
index 0000000..72db93d
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp2.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamp"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (1 <= p <= 3)"
+field-type-name = "TIMESTAMP(2)"
+
+// part: setup_query
+
+CREATE TABLE test_timestamp (
+    idx INTEGER,
+    res TIMESTAMP(2)
+);
+
+INSERT INTO test_timestamp (idx, res) VALUES (1, TIMESTAMP '2023-05-15 13:45:30.12');
+INSERT INTO test_timestamp (idx, res) VALUES (2, TIMESTAMP '2000-01-01 00:00:00.23');
+INSERT INTO test_timestamp (idx, res) VALUES (3, TIMESTAMP '1969-07-20 20:17:40.34');
+INSERT INTO test_timestamp (idx, res) VALUES (4, TIMESTAMP '0001-01-01 00:00:00.00');
+INSERT INTO test_timestamp (idx, res) VALUES (5, TIMESTAMP '9999-12-31 23:59:59.99');
+INSERT INTO test_timestamp (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamp ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsm:",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330120}
+{"res": 946684800230}
+{"res": -14182939660}
+{"res": -62135596800000}
+{"res": 253402300799990}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp2tz.txtcase b/adbc_drivers_validation/queries/type/select/timestamp2tz.txtcase
new file mode 100644
index 0000000..a9a6c58
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp2tz.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamptz"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (1 <= p <= 3) WITH TIME ZONE"
+field-type-name = "TIMESTAMP(2) WITH TIME ZONE"
+
+// part: setup_query
+
+CREATE TABLE test_timestamptz (
+    idx INTEGER,
+    res TIMESTAMP(2) WITH TIME ZONE
+);
+
+INSERT INTO test_timestamptz (idx, res) VALUES (1, TIMESTAMP WITH TIME ZONE '2023-05-15 13:45:30.12+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (2, TIMESTAMP WITH TIME ZONE '2000-01-01 00:00:00.23+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (3, TIMESTAMP WITH TIME ZONE '1969-07-20 20:17:40.34+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (4, TIMESTAMP WITH TIME ZONE '0001-01-01 00:00:00.00+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (5, TIMESTAMP WITH TIME ZONE '9999-12-31 23:59:59.99+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamptz ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsm:UTC",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330120}
+{"res": 946684800230}
+{"res": -14182939660}
+{"res": -62135596800000}
+{"res": 253402300799990}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp3.txtcase b/adbc_drivers_validation/queries/type/select/timestamp3.txtcase
new file mode 100644
index 0000000..0101594
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp3.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamp"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (1 <= p <= 3)"
+field-type-name = "TIMESTAMP(3)"
+
+// part: setup_query
+
+CREATE TABLE test_timestamp (
+    idx INTEGER,
+    res TIMESTAMP(3)
+);
+
+INSERT INTO test_timestamp (idx, res) VALUES (1, TIMESTAMP '2023-05-15 13:45:30.123');
+INSERT INTO test_timestamp (idx, res) VALUES (2, TIMESTAMP '2000-01-01 00:00:00.234');
+INSERT INTO test_timestamp (idx, res) VALUES (3, TIMESTAMP '1969-07-20 20:17:40.345');
+INSERT INTO test_timestamp (idx, res) VALUES (4, TIMESTAMP '0001-01-01 00:00:00.000');
+INSERT INTO test_timestamp (idx, res) VALUES (5, TIMESTAMP '9999-12-31 23:59:59.999');
+INSERT INTO test_timestamp (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamp ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsm:",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123}
+{"res": 946684800234}
+{"res": -14182939655}
+{"res": -62135596800000}
+{"res": 253402300799999}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp3tz.txtcase b/adbc_drivers_validation/queries/type/select/timestamp3tz.txtcase
new file mode 100644
index 0000000..8810c61
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp3tz.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamptz"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (1 <= p <= 3) WITH TIME ZONE"
+field-type-name = "TIMESTAMP(3) WITH TIME ZONE"
+
+// part: setup_query
+
+CREATE TABLE test_timestamptz (
+    idx INTEGER,
+    res TIMESTAMP(3) WITH TIME ZONE
+);
+
+INSERT INTO test_timestamptz (idx, res) VALUES (1, TIMESTAMP WITH TIME ZONE '2023-05-15 13:45:30.123+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (2, TIMESTAMP WITH TIME ZONE '2000-01-01 00:00:00.234+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (3, TIMESTAMP WITH TIME ZONE '1969-07-20 20:17:40.345+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (4, TIMESTAMP WITH TIME ZONE '0001-01-01 00:00:00.000+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (5, TIMESTAMP WITH TIME ZONE '9999-12-31 23:59:59.999+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamptz ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsm:UTC",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123}
+{"res": 946684800234}
+{"res": -14182939655}
+{"res": -62135596800000}
+{"res": 253402300799999}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp4.txtcase b/adbc_drivers_validation/queries/type/select/timestamp4.txtcase
new file mode 100644
index 0000000..edca023
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp4.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamp"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (4 <= p <= 6)"
+field-type-name = "TIMESTAMP(4)"
+
+// part: setup_query
+
+CREATE TABLE test_timestamp (
+    idx INTEGER,
+    res TIMESTAMP(4)
+);
+
+INSERT INTO test_timestamp (idx, res) VALUES (1, TIMESTAMP '2023-05-15 13:45:30.1234');
+INSERT INTO test_timestamp (idx, res) VALUES (2, TIMESTAMP '2000-01-01 00:00:00.2345');
+INSERT INTO test_timestamp (idx, res) VALUES (3, TIMESTAMP '1969-07-20 20:17:40.3456');
+INSERT INTO test_timestamp (idx, res) VALUES (4, TIMESTAMP '0001-01-01 00:00:00.0000');
+INSERT INTO test_timestamp (idx, res) VALUES (5, TIMESTAMP '9999-12-31 23:59:59.9999');
+INSERT INTO test_timestamp (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamp ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsu:",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123400}
+{"res": 946684800234500}
+{"res": -14182939654400}
+{"res": -62135596800000000}
+{"res": 253402300799999900}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp4tz.txtcase b/adbc_drivers_validation/queries/type/select/timestamp4tz.txtcase
new file mode 100644
index 0000000..06197da
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp4tz.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamptz"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (4 <= p <= 6) WITH TIME ZONE"
+field-type-name = "TIMESTAMP(4) WITH TIME ZONE"
+
+// part: setup_query
+
+CREATE TABLE test_timestamptz (
+    idx INTEGER,
+    res TIMESTAMP(4) WITH TIME ZONE
+);
+
+INSERT INTO test_timestamptz (idx, res) VALUES (1, TIMESTAMP WITH TIME ZONE '2023-05-15 13:45:30.1234+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (2, TIMESTAMP WITH TIME ZONE '2000-01-01 00:00:00.2345+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (3, TIMESTAMP WITH TIME ZONE '1969-07-20 20:17:40.3456+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (4, TIMESTAMP WITH TIME ZONE '0001-01-01 00:00:00.0000+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (5, TIMESTAMP WITH TIME ZONE '9999-12-31 23:59:59.9999+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamptz ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsu:UTC",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123400}
+{"res": 946684800234500}
+{"res": -14182939654400}
+{"res": -62135596800000000}
+{"res": 253402300799999900}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp5.txtcase b/adbc_drivers_validation/queries/type/select/timestamp5.txtcase
new file mode 100644
index 0000000..169cb84
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp5.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamp"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (4 <= p <= 6)"
+field-type-name = "TIMESTAMP(5)"
+
+// part: setup_query
+
+CREATE TABLE test_timestamp (
+    idx INTEGER,
+    res TIMESTAMP(5)
+);
+
+INSERT INTO test_timestamp (idx, res) VALUES (1, TIMESTAMP '2023-05-15 13:45:30.12345');
+INSERT INTO test_timestamp (idx, res) VALUES (2, TIMESTAMP '2000-01-01 00:00:00.23456');
+INSERT INTO test_timestamp (idx, res) VALUES (3, TIMESTAMP '1969-07-20 20:17:40.34567');
+INSERT INTO test_timestamp (idx, res) VALUES (4, TIMESTAMP '0001-01-01 00:00:00.00000');
+INSERT INTO test_timestamp (idx, res) VALUES (5, TIMESTAMP '9999-12-31 23:59:59.99999');
+INSERT INTO test_timestamp (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamp ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsu:",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123450}
+{"res": 946684800234560}
+{"res": -14182939654330}
+{"res": -62135596800000000}
+{"res": 253402300799999990}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp5tz.txtcase b/adbc_drivers_validation/queries/type/select/timestamp5tz.txtcase
new file mode 100644
index 0000000..ab07201
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp5tz.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamptz"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (4 <= p <= 6) WITH TIME ZONE"
+field-type-name = "TIMESTAMP(5) WITH TIME ZONE"
+
+// part: setup_query
+
+CREATE TABLE test_timestamptz (
+    idx INTEGER,
+    res TIMESTAMP(5) WITH TIME ZONE
+);
+
+INSERT INTO test_timestamptz (idx, res) VALUES (1, TIMESTAMP WITH TIME ZONE '2023-05-15 13:45:30.12345+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (2, TIMESTAMP WITH TIME ZONE '2000-01-01 00:00:00.23456+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (3, TIMESTAMP WITH TIME ZONE '1969-07-20 20:17:40.34567+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (4, TIMESTAMP WITH TIME ZONE '0001-01-01 00:00:00.00000+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (5, TIMESTAMP WITH TIME ZONE '9999-12-31 23:59:59.99999+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamptz ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsu:UTC",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123450}
+{"res": 946684800234560}
+{"res": -14182939654330}
+{"res": -62135596800000000}
+{"res": 253402300799999990}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp.txtcase b/adbc_drivers_validation/queries/type/select/timestamp6.txtcase
similarity index 70%
rename from adbc_drivers_validation/queries/type/select/timestamp.txtcase
rename to adbc_drivers_validation/queries/type/select/timestamp6.txtcase
index 70ec0dd..97c520b 100644
--- a/adbc_drivers_validation/queries/type/select/timestamp.txtcase
+++ b/adbc_drivers_validation/queries/type/select/timestamp6.txtcase
@@ -14,31 +14,18 @@
 
 // part: metadata
 
-# Copyright (c) 2026 ADBC Drivers Contributors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 [setup]
 drop = "test_timestamp"
 
 [tags]
-sql-type-name = "TIMESTAMP"
+sql-type-name = "TIMESTAMP(p) (4 <= p <= 6)"
+field-type-name = "TIMESTAMP(6)"
 
 // part: setup_query
 
 CREATE TABLE test_timestamp (
     idx INTEGER,
-    res TIMESTAMP
+    res TIMESTAMP(6)
 );
 
 INSERT INTO test_timestamp (idx, res) VALUES (1, TIMESTAMP '2023-05-15 13:45:30');
@@ -46,6 +33,8 @@ INSERT INTO test_timestamp (idx, res) VALUES (2, TIMESTAMP '2000-01-01 00:00:00'
 INSERT INTO test_timestamp (idx, res) VALUES (3, TIMESTAMP '1969-07-20 20:17:40');
 INSERT INTO test_timestamp (idx, res) VALUES (4, TIMESTAMP '9999-12-31 23:59:59');
 INSERT INTO test_timestamp (idx, res) VALUES (5, NULL);
+INSERT INTO test_timestamp (idx, res) VALUES (6, TIMESTAMP '0001-01-01 00:00:00.000000');
+INSERT INTO test_timestamp (idx, res) VALUES (7, TIMESTAMP '2023-05-15 13:45:30.123456');
 
 // part: query
 
@@ -71,3 +60,5 @@ SELECT res FROM test_timestamp ORDER BY idx
 {"res": -14182940000000}
 {"res": 253402300799000000}
 {"res": null}
+{"res": -62135596800000000}
+{"res": 1684158330123456}
diff --git a/adbc_drivers_validation/queries/type/select/timestamptz.txtcase b/adbc_drivers_validation/queries/type/select/timestamp6tz.txtcase
similarity index 70%
rename from adbc_drivers_validation/queries/type/select/timestamptz.txtcase
rename to adbc_drivers_validation/queries/type/select/timestamp6tz.txtcase
index d100de2..1ce7bd7 100644
--- a/adbc_drivers_validation/queries/type/select/timestamptz.txtcase
+++ b/adbc_drivers_validation/queries/type/select/timestamp6tz.txtcase
@@ -14,31 +14,18 @@
 
 // part: metadata
 
-# Copyright (c) 2026 ADBC Drivers Contributors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 [setup]
 drop = "test_timestamptz"
 
 [tags]
-sql-type-name = "TIMESTAMP WITH TIME ZONE"
+sql-type-name = "TIMESTAMP(p) (4 <= p <= 6) WITH TIME ZONE"
+field-type-name = "TIMESTAMP(6) WITH TIME ZONE"
 
 // part: setup_query
 
 CREATE TABLE test_timestamptz (
     idx INTEGER,
-    res TIMESTAMP WITH TIME ZONE
+    res TIMESTAMP(6) WITH TIME ZONE
 );
 
 INSERT INTO test_timestamptz (idx, res) VALUES (1, TIMESTAMP WITH TIME ZONE '2023-05-15 13:45:30+00');
@@ -46,6 +33,8 @@ INSERT INTO test_timestamptz (idx, res) VALUES (2, TIMESTAMP WITH TIME ZONE '200
 INSERT INTO test_timestamptz (idx, res) VALUES (3, TIMESTAMP WITH TIME ZONE '1969-07-20 20:17:40+00');
 INSERT INTO test_timestamptz (idx, res) VALUES (4, TIMESTAMP WITH TIME ZONE '9999-12-31 23:59:59+00');
 INSERT INTO test_timestamptz (idx, res) VALUES (5, NULL);
+INSERT INTO test_timestamptz (idx, res) VALUES (6, TIMESTAMP WITH TIME ZONE '0001-01-01 00:00:00.000000+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (7, TIMESTAMP WITH TIME ZONE '2023-05-15 13:45:30.123456+00');
 
 // part: query
 
@@ -71,3 +60,5 @@ SELECT res FROM test_timestamptz ORDER BY idx
 {"res": -14182940000000}
 {"res": 253402300799000000}
 {"res": null}
+{"res": -62135596800000000}
+{"res": 1684158330123456}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp7.txtcase b/adbc_drivers_validation/queries/type/select/timestamp7.txtcase
new file mode 100644
index 0000000..1b909e6
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp7.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamp"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (7 <= p <= 9)"
+field-type-name = "TIMESTAMP(7)"
+
+// part: setup_query
+
+CREATE TABLE test_timestamp (
+    idx INTEGER,
+    res TIMESTAMP(7)
+);
+
+INSERT INTO test_timestamp (idx, res) VALUES (1, TIMESTAMP '2023-05-15 13:45:30.1234567');
+INSERT INTO test_timestamp (idx, res) VALUES (2, TIMESTAMP '2000-01-01 00:00:00.2345678');
+INSERT INTO test_timestamp (idx, res) VALUES (3, TIMESTAMP '1969-07-20 20:17:40.3456789');
+INSERT INTO test_timestamp (idx, res) VALUES (4, TIMESTAMP '1677-09-21 00:12:43.2');
+INSERT INTO test_timestamp (idx, res) VALUES (5, TIMESTAMP '2262-04-11 23:47:16.8');
+INSERT INTO test_timestamp (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamp ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsn:",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123456700}
+{"res": 946684800234567800}
+{"res": -14182939654321100}
+{"res": -9223372036800000000}
+{"res": 9223372036800000000}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp7tz.txtcase b/adbc_drivers_validation/queries/type/select/timestamp7tz.txtcase
new file mode 100644
index 0000000..9f5b5b2
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp7tz.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamptz"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (7 <= p <= 9) WITH TIME ZONE"
+field-type-name = "TIMESTAMP(7) WITH TIME ZONE"
+
+// part: setup_query
+
+CREATE TABLE test_timestamptz (
+    idx INTEGER,
+    res TIMESTAMP(7) WITH TIME ZONE
+);
+
+INSERT INTO test_timestamptz (idx, res) VALUES (1, TIMESTAMP WITH TIME ZONE '2023-05-15 13:45:30.1234567+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (2, TIMESTAMP WITH TIME ZONE '2000-01-01 00:00:00.2345678+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (3, TIMESTAMP WITH TIME ZONE '1969-07-20 20:17:40.3456789+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (4, TIMESTAMP WITH TIME ZONE '1677-09-21 00:12:43.2+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (5, TIMESTAMP WITH TIME ZONE '2262-04-11 23:47:16.8+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamptz ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsn:UTC",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123456700}
+{"res": 946684800234567800}
+{"res": -14182939654321100}
+{"res": -9223372036800000000}
+{"res": 9223372036800000000}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp8.txtcase b/adbc_drivers_validation/queries/type/select/timestamp8.txtcase
new file mode 100644
index 0000000..7eec1d1
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp8.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamp"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (7 <= p <= 9)"
+field-type-name = "TIMESTAMP(8)"
+
+// part: setup_query
+
+CREATE TABLE test_timestamp (
+    idx INTEGER,
+    res TIMESTAMP(8)
+);
+
+INSERT INTO test_timestamp (idx, res) VALUES (1, TIMESTAMP '2023-05-15 13:45:30.12345678');
+INSERT INTO test_timestamp (idx, res) VALUES (2, TIMESTAMP '2000-01-01 00:00:00.23456789');
+INSERT INTO test_timestamp (idx, res) VALUES (3, TIMESTAMP '1969-07-20 20:17:40.34567890');
+INSERT INTO test_timestamp (idx, res) VALUES (4, TIMESTAMP '1677-09-21 00:12:43.15');
+INSERT INTO test_timestamp (idx, res) VALUES (5, TIMESTAMP '2262-04-11 23:47:16.85');
+INSERT INTO test_timestamp (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamp ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsn:",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123456780}
+{"res": 946684800234567890}
+{"res": -14182939654321100}
+{"res": -9223372036850000000}
+{"res": 9223372036850000000}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp8tz.txtcase b/adbc_drivers_validation/queries/type/select/timestamp8tz.txtcase
new file mode 100644
index 0000000..e157132
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp8tz.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamptz"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (7 <= p <= 9) WITH TIME ZONE"
+field-type-name = "TIMESTAMP(8) WITH TIME ZONE"
+
+// part: setup_query
+
+CREATE TABLE test_timestamptz (
+    idx INTEGER,
+    res TIMESTAMP(8) WITH TIME ZONE
+);
+
+INSERT INTO test_timestamptz (idx, res) VALUES (1, TIMESTAMP WITH TIME ZONE '2023-05-15 13:45:30.12345678+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (2, TIMESTAMP WITH TIME ZONE '2000-01-01 00:00:00.23456789+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (3, TIMESTAMP WITH TIME ZONE '1969-07-20 20:17:40.34567890+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (4, TIMESTAMP WITH TIME ZONE '1677-09-21 00:12:43.15+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (5, TIMESTAMP WITH TIME ZONE '2262-04-11 23:47:16.85+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamptz ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsn:UTC",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123456780}
+{"res": 946684800234567890}
+{"res": -14182939654321100}
+{"res": -9223372036850000000}
+{"res": 9223372036850000000}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp9.txtcase b/adbc_drivers_validation/queries/type/select/timestamp9.txtcase
new file mode 100644
index 0000000..c0d8d6c
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp9.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamp"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (7 <= p <= 9)"
+field-type-name = "TIMESTAMP(9)"
+
+// part: setup_query
+
+CREATE TABLE test_timestamp (
+    idx INTEGER,
+    res TIMESTAMP(9)
+);
+
+INSERT INTO test_timestamp (idx, res) VALUES (1, TIMESTAMP '2023-05-15 13:45:30.123456789');
+INSERT INTO test_timestamp (idx, res) VALUES (2, TIMESTAMP '2000-01-01 00:00:00.234567890');
+INSERT INTO test_timestamp (idx, res) VALUES (3, TIMESTAMP '1969-07-20 20:17:40.345678901');
+INSERT INTO test_timestamp (idx, res) VALUES (4, TIMESTAMP '1677-09-21 00:12:43.145224192');
+INSERT INTO test_timestamp (idx, res) VALUES (5, TIMESTAMP '2262-04-11 23:47:16.854775807');
+INSERT INTO test_timestamp (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamp ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsn:",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123456789}
+{"res": 946684800234567890}
+{"res": -14182939654321099}
+{"res": -9223372036854775808}
+{"res": 9223372036854775807}
+{"res": null}
diff --git a/adbc_drivers_validation/queries/type/select/timestamp9tz.txtcase b/adbc_drivers_validation/queries/type/select/timestamp9tz.txtcase
new file mode 100644
index 0000000..7973574
--- /dev/null
+++ b/adbc_drivers_validation/queries/type/select/timestamp9tz.txtcase
@@ -0,0 +1,62 @@
+// Copyright (c) 2026 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamptz"
+
+[tags]
+sql-type-name = "TIMESTAMP(p) (7 <= p <= 9) WITH TIME ZONE"
+field-type-name = "TIMESTAMP(9) WITH TIME ZONE"
+
+// part: setup_query
+
+CREATE TABLE test_timestamptz (
+    idx INTEGER,
+    res TIMESTAMP(9) WITH TIME ZONE
+);
+
+INSERT INTO test_timestamptz (idx, res) VALUES (1, TIMESTAMP WITH TIME ZONE '2023-05-15 13:45:30.123456789+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (2, TIMESTAMP WITH TIME ZONE '2000-01-01 00:00:00.234567890+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (3, TIMESTAMP WITH TIME ZONE '1969-07-20 20:17:40.345678901+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (4, TIMESTAMP WITH TIME ZONE '1677-09-21 00:12:43.145224192+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (5, TIMESTAMP WITH TIME ZONE '2262-04-11 23:47:16.854775807+00');
+INSERT INTO test_timestamptz (idx, res) VALUES (6, NULL);
+
+// part: query
+
+SELECT res FROM test_timestamptz ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsn:UTC",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": 1684158330123456789}
+{"res": 946684800234567890}
+{"res": -14182939654321099}
+{"res": -9223372036854775808}
+{"res": 9223372036854775807}
+{"res": null}