diff --git a/README copy.md b/README copy.md
new file mode 100644
index 00000000..397e0650
--- /dev/null
+++ b/README copy.md	
@@ -0,0 +1,56 @@
+# Opteryx README
+
+[![Opteryx](https://raw.githubusercontent.com/mabel-dev/opteryx/main/opteryx-word-small.png)](https://opteryx.dev/latest)
+
+Opteryx is a Python library designed for data wrangling and analytics. With Opteryx, users can seamlessly interact with various data platforms, unlocking the full potential of their data.
+
+## Features
+
+Opteryx offers the following features:
+
+- SQL queries on data files generated by other processes, such as logs.
+- A command-line tool for filtering, transforming, and combining files in a flexible and intuitive manner.
+- Embeddable as a low-cost engine, allowing for hundreds of analysts to leverage ad hoc databases with ease.
+- Integration with familiar tools like pandas and Polars.
+- Unified and federated access to data on disk, in the Cloud and in on-prem databases, not only through the same interface, but in the same query.
+
+## Why Use Opteryx?
+
+### Familiar Interface
+
+Opteryx supports key parts of the Python DBAPI and SQL92 standard standards which many analysts and engineers will already know how to use.
+
+### Consistent Syntax
+
+Opteryx creates a common SQL-layer over multiple data platforms, allowing backend systems to be upgraded, migrated or consolidated without changing any Opteryx code.
+
+### Bring your own Data
+
+Opteryx supports multiple query engines, dataframe APIs and storage formats. You can mix-and-match sources in a single query. Opteryx can even `JOIN` datasets stored in different formats, such as Parquet and MySQL.
+
+Opteryx allows you to query your data directly in the systems where they are stored, eliminating the need to duplicate data into a common store for analytics. This saves you the cost and effort of maintaining duplicates.
+
+Opteryx can push parts of your query to the source query engine, allowing queries to run at the speed of the backend, rather than your local computer.
+
+And if there's not a connector in the box for your data platform; bespoke connectors can be added.
+
+### Consumption-Based Billing Friendly
+
+Opteryx is well-suited for deployments to environments which are pay-as-you-use, like Google Cloud Run. Great for situations where you low-volume usage, or multiple environments, where the costs of many traditional database deployment can quickly add up.
+
+### Python Native
+
+Opteryx is Open Source Python, it quickly and easily integrates into Python code, including Jupyter Notebooks, so you can start querying your data within a few minutes. You can use Opteryx to run SQL against pandas DataFrames, and even execute a `JOIN` on an in-memory DataFrame and a remote dataset.
+
+### Time Travel
+
+Designed for data analytics in environments where decisions need to be replayable, Opteryx allows you to query data as at a point in time in the past to replay decision algorithms against facts as they were known in the past. You can even self-join tables historic data, great for finding deltas in datasets over time. (data must be structured to enable temporal queries)
+
+### Fast
+
+Benchmarks on M1 Pro Mac running an ad hoc `GROUP BY` over a 1Gb parquet file via the CLI in ~1/5th of a second, from a cold start. (different systems will have different performance characteristics)
+
+| Rows | Columns | File Size | Query Time |
+| ---- | ------- | --------- | ---------- |
+| 561225 | 81 | 1Gb | 0.22sec |
+| 1064539 | 81 | 2Gb | 0.27sec |
\ No newline at end of file
diff --git a/opteryx/models/columns.py b/opteryx/models/columns.py
index 88080014..361a0b59 100644
--- a/opteryx/models/columns.py
+++ b/opteryx/models/columns.py
@@ -154,6 +154,7 @@ def get_column_from_alias(self, column, only_one: bool = False):
         If we're expecting only_one match, we fail if that's not what we find.
         """
         matches = []
+        column = str(column)
         for col, att in self._column_metadata.items():
             matches.extend([col for alias in att.get("aliases", []) if alias == column])
         matches = list(dict.fromkeys(matches))
diff --git a/opteryx/operators/file_reader_node.py b/opteryx/operators/file_reader_node.py
index 8b94ee38..6292dd96 100644
--- a/opteryx/operators/file_reader_node.py
+++ b/opteryx/operators/file_reader_node.py
@@ -111,8 +111,8 @@ def name(self):  # pragma: no cover
         return "File Reader"
 
     def execute(self) -> Iterable:
-        ext = ".".join(self._dataset.split("/")[-1].split(".")[1:])
-        parser, kind = KNOWN_EXTENSIONS[ext]
+        ext = self._dataset.split("/")[-1].split(".")[-1]
+        parser, _ = KNOWN_EXTENSIONS[ext]
 
         time_to_read, blob_bytes, pyarrow_blob = self._read_and_parse(
             (
diff --git a/testdata/flat/multi/00.01.jsonl b/testdata/flat/multi/00.01.jsonl
new file mode 100644
index 00000000..f2a789a2
--- /dev/null
+++ b/testdata/flat/multi/00.01.jsonl
@@ -0,0 +1 @@
+{"string": "string", "int": 1, "float": 1.2, "once":"true"}
\ No newline at end of file
diff --git a/tests/sql_battery/test_shapes_and_errors_battery.py b/tests/sql_battery/test_shapes_and_errors_battery.py
index 2ac7b359..ca9b4215 100644
--- a/tests/sql_battery/test_shapes_and_errors_battery.py
+++ b/tests/sql_battery/test_shapes_and_errors_battery.py
@@ -712,6 +712,9 @@
         ("SELECT * FROM $RomanGods", None, None, DatasetNotFoundError),
         # disk dataset doesn't exist
         ("SELECT * FROM non.existent", None, None, DatasetNotFoundError),
+        # column doesn't exist
+        ("SELECT awesomeness_factor FROM $planets;", None, None, ColumnNotFoundError),
+        ("SELECT * FROM $planets WHERE awesomeness_factor > 'Mega';", None, None, ColumnNotFoundError),
         # https://trino.io/docs/current/functions/aggregate.html#filtering-during-aggregation
         ("SELECT LIST(name) FILTER (WHERE name IS NOT NULL) FROM $planets;", None, None, SqlError),
         # Can't IN an INDENTIFIER
@@ -876,7 +879,11 @@
         # 999 - subscripting
         ("SELECT name['n'] FROM $planets", None, None, ProgrammingError),
         ("SELECT id['n'] FROM $planets", None, None, ProgrammingError),
-
+        # [1008] fuzzy search fails on ints
+        ("SELECT * FROM $planets JOIN $planets ON id = 12;", None, None, ColumnNotFoundError),
+        ("SELECT * FROM $planets JOIN $planets ON 12 = id;", None, None, ColumnNotFoundError),
+        # [1006] dots in filenames
+        ("SELECT * FROM 'testdata/flat/multi/00.01.jsonl'", 1, 4, None),
 ]
 # fmt:on