diff --git a/lnbits/db.py b/lnbits/db.py
index a93e4a4c5..0b36cdf4a 100644
--- a/lnbits/db.py
+++ b/lnbits/db.py
@@ -9,6 +9,7 @@ from contextlib import asynccontextmanager
 from enum import Enum
 from typing import Any, Generic, Literal, Optional, TypeVar
 
+import shortuuid
 from loguru import logger
 from pydantic import BaseModel, ValidationError, root_validator
 from sqlalchemy import event
@@ -263,7 +264,7 @@ class Database(Compat):
                 dbapi_connection.run_async(
                     lambda connection: connection.set_type_codec(
                         "TIMESTAMP",
-                        encoder=datetime.datetime.timestamp,
+                        encoder=datetime.datetime,
                         decoder=_parse_timestamp,
                         schema="pg_catalog",
                     )
@@ -421,7 +422,7 @@ class Filter(BaseModel, Generic[TFilterModel]):
                 validated, errors = compare_field.validate(raw_value, {}, loc="none")
                 if errors:
                     raise ValidationError(errors=[errors], model=model)
-                values[field] = validated
+                values[f"{field}__{shortuuid.uuid()}"] = validated
         else:
             raise ValueError("Unknown filter field")
 
@@ -429,16 +430,17 @@ class Filter(BaseModel, Generic[TFilterModel]):
 
     @property
     def statement(self):
-        if self.op in (Operator.INCLUDE, Operator.EXCLUDE) and self.values:
-            placeholders = []
-            for key in self.values.keys():
-                if self.model and self.model.__fields__[key].type_ == datetime.datetime:
-                    placeholders.append(compat_timestamp_placeholder(key))
-                else:
-                    placeholders.append(f":{key}")
-            stmt = [f"{self.field} {self.op.as_sql} ({', '.join(placeholders)})"]
-        else:
-            stmt = [f"{self.field} {self.op.as_sql} :{self.field}"]
+        stmt = []
+        for key in self.values.keys() if self.values else []:
+            clean_key = key.split("__")[0]
+            if (
+                self.model
+                and self.model.__fields__[clean_key].type_ == datetime.datetime
+            ):
+                placeholder = compat_timestamp_placeholder(key)
+            else:
+                placeholder = f":{key}"
+            stmt.append(f"{clean_key} {self.op.as_sql} {placeholder}")
         return " OR ".join(stmt)
 
 
diff --git a/tests/api/test_api.py b/tests/api/test_api.py
index fa8a011d7..52b3b4506 100644
--- a/tests/api/test_api.py
+++ b/tests/api/test_api.py
@@ -367,7 +367,6 @@ async def test_get_payments_history(client, adminkey_headers_from, fake_payments
     assert response.status_code == 200
     data = response.json()
     assert len(data) == 1
-    print(data)
     assert data[0]["income"] == sum(
         [int(payment.amount * 1000) for payment in fake_data if not payment.out]
     )
diff --git a/tests/conftest.py b/tests/conftest.py
index 070d03008..6e92e7748 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -22,7 +22,7 @@ from lnbits.core.crud import (
 from lnbits.core.models import CreateInvoice, PaymentState
 from lnbits.core.services import update_wallet_balance
 from lnbits.core.views.payment_api import api_payments_create_invoice
-from lnbits.db import Database
+from lnbits.db import DB_TYPE, SQLITE, Database
 from lnbits.settings import settings
 from tests.helpers import (
     get_random_invoice_data,
@@ -182,7 +182,8 @@ async def invoice(to_wallet):
 async def fake_payments(client, adminkey_headers_from):
     # Because sqlite only stores timestamps with milliseconds
     # we have to wait a second to ensure a different timestamp than previous invoices
-    await asyncio.sleep(1)
+    if DB_TYPE == SQLITE:
+        await asyncio.sleep(1)
     ts = int(time())
 
     fake_data = [
@@ -200,5 +201,5 @@ async def fake_payments(client, adminkey_headers_from):
         assert data["checking_id"]
         await update_payment_status(data["checking_id"], status=PaymentState.SUCCESS)
 
-    params = {"time[ge]": ts, "time[le]": int(time())}
+    params = {"time[ge]": ts, "time[le]": int(time()) + 1}
     return fake_data, params