diff --git a/.github/workflows/pythonapp.yaml b/.github/workflows/pythonapp.yaml
index 21915737..9a1e8e64 100644
--- a/.github/workflows/pythonapp.yaml
+++ b/.github/workflows/pythonapp.yaml
@@ -19,6 +19,9 @@ jobs:
         - python: 3.9
           bleeding_edge: true
 
+    env:
+      PYTHON: ${{matrix.python}}
+
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python }}
@@ -52,3 +55,9 @@ jobs:
         if: always()
         with:
           junit_files: results.xml
+      - uses: codecov/codecov-action@v3
+        with:
+          files: ./coverage.xml
+          env_vars: PYTHON  # set from matrix
+          fail_ci_if_error: true
+          verbose: true
diff --git a/.gitignore b/.gitignore
index 4d707bb4..5e1f73a6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,7 @@
 dist/
 *.egg-info
 __pycache__/
+.tox/
+htmlcov/
+.coverage
+coverage.xml
diff --git a/README.md b/README.md
index bf0755bd..5fb8edbe 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # duckdb_engine
 
-[![Supported Python Versions](https://img.shields.io/pypi/pyversions/duckdb-engine)](https://pypi.org/project/duckdb-engine/) [![PyPI version](https://badge.fury.io/py/duckdb-engine.svg)](https://badge.fury.io/py/duckdb-engine)
+[![Supported Python Versions](https://img.shields.io/pypi/pyversions/duckdb-engine)](https://pypi.org/project/duckdb-engine/) [![PyPI version](https://badge.fury.io/py/duckdb-engine.svg)](https://badge.fury.io/py/duckdb-engine) [![codecov](https://codecov.io/gh/Mause/duckdb_engine/branch/master/graph/badge.svg)](https://codecov.io/gh/Mause/duckdb_engine)
 
 Basic SQLAlchemy driver for [DuckDB](https://duckdb.org/)
 
diff --git a/poetry.lock b/poetry.lock
index 107259bd..09f13e47 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -60,6 +60,20 @@ category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
+[[package]]
+name = "coverage"
+version = "6.2"
+description = "Code coverage measurement for Python"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+tomli = {version = "*", optional = true, markers = "extra == \"toml\""}
+
+[package.extras]
+toml = ["tomli"]
+
 [[package]]
 name = "decorator"
 version = "5.0.9"
@@ -346,7 +360,7 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [package.extras]
-testing = ["docopt", "pytest (>=3.0.7)"]
+testing = ["pytest (>=3.0.7)", "docopt"]
 
 [[package]]
 name = "pdbpp"
@@ -505,6 +519,21 @@ tomli = ">=1.0.0"
 [package.extras]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "xmlschema"]
 
+[[package]]
+name = "pytest-cov"
+version = "3.0.0"
+description = "Pytest plugin for measuring coverage."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+coverage = {version = ">=5.2.1", extras = ["toml"]}
+pytest = ">=4.6"
+
+[package.extras]
+testing = ["virtualenv", "pytest-xdist", "six", "process-tests", "hunter", "fields"]
+
 [[package]]
 name = "python-dateutil"
 version = "2.8.1"
@@ -700,7 +729,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = ">=3.6.1"
-content-hash = "815a2279b75b408bed0539ea7a58c7d14318cf31ac3305c5de8f47b13bbb45f3"
+content-hash = "6621d791628e13ad7e5307008e805ee112da5429873eb094820e210e8e4a830e"
 
 [metadata.files]
 appdirs = [
@@ -731,6 +760,55 @@ colorama = [
     {file = "colorama-0.4.4-py2.py3-none-any.whl", hash = "sha256:9f47eda37229f68eee03b24b9748937c7dc3868f906e8ba69fbcbdd3bc5dc3e2"},
     {file = "colorama-0.4.4.tar.gz", hash = "sha256:5941b2b48a20143d2267e95b1c2a7603ce057ee39fd88e7329b0c292aa16869b"},
 ]
+coverage = [
+    {file = "coverage-6.2-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:6dbc1536e105adda7a6312c778f15aaabe583b0e9a0b0a324990334fd458c94b"},
+    {file = "coverage-6.2-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:174cf9b4bef0db2e8244f82059a5a72bd47e1d40e71c68ab055425172b16b7d0"},
+    {file = "coverage-6.2-cp310-cp310-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:92b8c845527eae547a2a6617d336adc56394050c3ed8a6918683646328fbb6da"},
+    {file = "coverage-6.2-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:c7912d1526299cb04c88288e148c6c87c0df600eca76efd99d84396cfe00ef1d"},
+    {file = "coverage-6.2-cp310-cp310-musllinux_1_1_aarch64.whl", hash = "sha256:d5d2033d5db1d58ae2d62f095e1aefb6988af65b4b12cb8987af409587cc0739"},
+    {file = "coverage-6.2-cp310-cp310-musllinux_1_1_i686.whl", hash = "sha256:3feac4084291642165c3a0d9eaebedf19ffa505016c4d3db15bfe235718d4971"},
+    {file = "coverage-6.2-cp310-cp310-musllinux_1_1_x86_64.whl", hash = "sha256:276651978c94a8c5672ea60a2656e95a3cce2a3f31e9fb2d5ebd4c215d095840"},
+    {file = "coverage-6.2-cp310-cp310-win32.whl", hash = "sha256:f506af4f27def639ba45789fa6fde45f9a217da0be05f8910458e4557eed020c"},
+    {file = "coverage-6.2-cp310-cp310-win_amd64.whl", hash = "sha256:3f7c17209eef285c86f819ff04a6d4cbee9b33ef05cbcaae4c0b4e8e06b3ec8f"},
+    {file = "coverage-6.2-cp311-cp311-macosx_10_14_x86_64.whl", hash = "sha256:13362889b2d46e8d9f97c421539c97c963e34031ab0cb89e8ca83a10cc71ac76"},
+    {file = "coverage-6.2-cp311-cp311-manylinux_2_5_x86_64.manylinux1_x86_64.whl", hash = "sha256:22e60a3ca5acba37d1d4a2ee66e051f5b0e1b9ac950b5b0cf4aa5366eda41d47"},
+    {file = "coverage-6.2-cp311-cp311-win_amd64.whl", hash = "sha256:b637c57fdb8be84e91fac60d9325a66a5981f8086c954ea2772efe28425eaf64"},
+    {file = "coverage-6.2-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:f467bbb837691ab5a8ca359199d3429a11a01e6dfb3d9dcc676dc035ca93c0a9"},
+    {file = "coverage-6.2-cp36-cp36m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:2641f803ee9f95b1f387f3e8f3bf28d83d9b69a39e9911e5bfee832bea75240d"},
+    {file = "coverage-6.2-cp36-cp36m-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:1219d760ccfafc03c0822ae2e06e3b1248a8e6d1a70928966bafc6838d3c9e48"},
+    {file = "coverage-6.2-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:9a2b5b52be0a8626fcbffd7e689781bf8c2ac01613e77feda93d96184949a98e"},
+    {file = "coverage-6.2-cp36-cp36m-musllinux_1_1_aarch64.whl", hash = "sha256:8e2c35a4c1f269704e90888e56f794e2d9c0262fb0c1b1c8c4ee44d9b9e77b5d"},
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+    {file = "coverage-6.2-cp36-cp36m-win32.whl", hash = "sha256:4e547122ca2d244f7c090fe3f4b5a5861255ff66b7ab6d98f44a0222aaf8671a"},
+    {file = "coverage-6.2-cp36-cp36m-win_amd64.whl", hash = "sha256:01774a2c2c729619760320270e42cd9e797427ecfddd32c2a7b639cdc481f3c0"},
+    {file = "coverage-6.2-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:fb8b8ee99b3fffe4fd86f4c81b35a6bf7e4462cba019997af2fe679365db0c49"},
+    {file = "coverage-6.2-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:619346d57c7126ae49ac95b11b0dc8e36c1dd49d148477461bb66c8cf13bb521"},
+    {file = "coverage-6.2-cp37-cp37m-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:0a7726f74ff63f41e95ed3a89fef002916c828bb5fcae83b505b49d81a066884"},
+    {file = "coverage-6.2-cp37-cp37m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:cfd9386c1d6f13b37e05a91a8583e802f8059bebfccde61a418c5808dea6bbfa"},
+    {file = "coverage-6.2-cp37-cp37m-musllinux_1_1_aarch64.whl", hash = "sha256:17e6c11038d4ed6e8af1407d9e89a2904d573be29d51515f14262d7f10ef0a64"},
+    {file = "coverage-6.2-cp37-cp37m-musllinux_1_1_i686.whl", hash = "sha256:c254b03032d5a06de049ce8bca8338a5185f07fb76600afff3c161e053d88617"},
+    {file = "coverage-6.2-cp37-cp37m-musllinux_1_1_x86_64.whl", hash = "sha256:dca38a21e4423f3edb821292e97cec7ad38086f84313462098568baedf4331f8"},
+    {file = "coverage-6.2-cp37-cp37m-win32.whl", hash = "sha256:600617008aa82032ddeace2535626d1bc212dfff32b43989539deda63b3f36e4"},
+    {file = "coverage-6.2-cp37-cp37m-win_amd64.whl", hash = "sha256:bf154ba7ee2fd613eb541c2bc03d3d9ac667080a737449d1a3fb342740eb1a74"},
+    {file = "coverage-6.2-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:f9afb5b746781fc2abce26193d1c817b7eb0e11459510fba65d2bd77fe161d9e"},
+    {file = "coverage-6.2-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:edcada2e24ed68f019175c2b2af2a8b481d3d084798b8c20d15d34f5c733fa58"},
+    {file = "coverage-6.2-cp38-cp38-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:a9c8c4283e17690ff1a7427123ffb428ad6a52ed720d550e299e8291e33184dc"},
+    {file = "coverage-6.2-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:f614fc9956d76d8a88a88bb41ddc12709caa755666f580af3a688899721efecd"},
+    {file = "coverage-6.2-cp38-cp38-musllinux_1_1_aarch64.whl", hash = "sha256:9365ed5cce5d0cf2c10afc6add145c5037d3148585b8ae0e77cc1efdd6aa2953"},
+    {file = "coverage-6.2-cp38-cp38-musllinux_1_1_i686.whl", hash = "sha256:8bdfe9ff3a4ea37d17f172ac0dff1e1c383aec17a636b9b35906babc9f0f5475"},
+    {file = "coverage-6.2-cp38-cp38-musllinux_1_1_x86_64.whl", hash = "sha256:63c424e6f5b4ab1cf1e23a43b12f542b0ec2e54f99ec9f11b75382152981df57"},
+    {file = "coverage-6.2-cp38-cp38-win32.whl", hash = "sha256:49dbff64961bc9bdd2289a2bda6a3a5a331964ba5497f694e2cbd540d656dc1c"},
+    {file = "coverage-6.2-cp38-cp38-win_amd64.whl", hash = "sha256:9a29311bd6429be317c1f3fe4bc06c4c5ee45e2fa61b2a19d4d1d6111cb94af2"},
+    {file = "coverage-6.2-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:03b20e52b7d31be571c9c06b74746746d4eb82fc260e594dc662ed48145e9efd"},
+    {file = "coverage-6.2-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:215f8afcc02a24c2d9a10d3790b21054b58d71f4b3c6f055d4bb1b15cecce685"},
+    {file = "coverage-6.2-cp39-cp39-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:a4bdeb0a52d1d04123b41d90a4390b096f3ef38eee35e11f0b22c2d031222c6c"},
+    {file = "coverage-6.2-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:c332d8f8d448ded473b97fefe4a0983265af21917d8b0cdcb8bb06b2afe632c3"},
+    {file = "coverage-6.2-cp39-cp39-win32.whl", hash = "sha256:6e1394d24d5938e561fbeaa0cd3d356207579c28bd1792f25a068743f2d5b282"},
+    {file = "coverage-6.2-cp39-cp39-win_amd64.whl", hash = "sha256:86f2e78b1eff847609b1ca8050c9e1fa3bd44ce755b2ec30e70f2d3ba3844644"},
+    {file = "coverage-6.2-pp36.pp37.pp38-none-any.whl", hash = "sha256:5829192582c0ec8ca4a2532407bc14c2f338d9878a10442f5d03804a95fac9de"},
+    {file = "coverage-6.2.tar.gz", hash = "sha256:e2cad8093172b7d1595b4ad66f24270808658e11acf43a8f95b41276162eb5b8"},
+]
 decorator = [
     {file = "decorator-5.0.9-py3-none-any.whl", hash = "sha256:6e5c199c16f7a9f0e3a61a4a54b3d27e7dad0dbdde92b944426cb20914376323"},
     {file = "decorator-5.0.9.tar.gz", hash = "sha256:72ecfba4320a893c53f9706bebb2d55c270c1e51a28789361aa93e4a21319ed5"},
@@ -1034,6 +1112,10 @@ pytest = [
     {file = "pytest-7.0.1-py3-none-any.whl", hash = "sha256:9ce3ff477af913ecf6321fe337b93a2c0dcf2a0a1439c43f5452112c1e4280db"},
     {file = "pytest-7.0.1.tar.gz", hash = "sha256:e30905a0c131d3d94b89624a1cc5afec3e0ba2fbdb151867d8e0ebd49850f171"},
 ]
+pytest-cov = [
+    {file = "pytest-cov-3.0.0.tar.gz", hash = "sha256:e7f0f5b1617d2210a2cabc266dfe2f4c75a8d32fb89eafb7ad9d06f6d076d470"},
+    {file = "pytest_cov-3.0.0-py3-none-any.whl", hash = "sha256:578d5d15ac4a25e5f961c938b85a05b09fdaae9deef3bb6de9a6e766622ca7a6"},
+]
 python-dateutil = [
     {file = "python-dateutil-2.8.1.tar.gz", hash = "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c"},
     {file = "python_dateutil-2.8.1-py2.py3-none-any.whl", hash = "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"},
diff --git a/pyproject.toml b/pyproject.toml
index 6486ab16..a9fecffb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,6 +26,7 @@ hypothesis = "^6.31.6"
 pandas = "^1"
 ipython-sql = "^0.4.1"
 sqlalchemy-stubs = "^0.4"
+pytest-cov = {extras = ["coverage"], version = "^3.0.0"}
 
 [tool.poetry.plugins."sqlalchemy.dialects"]
 duckdb = "duckdb_engine:Dialect"
diff --git a/tox.ini b/tox.ini
index 0619363c..f568cc1c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,10 +15,10 @@ whitelist_externals = poetry
 commands =
     poetry install -v
     poetry run pip install duckdb --pre -U
-    poetry run pytest --junitxml=results.xml
+    poetry run pytest --junitxml=results.xml --cov --cov-report xml:coverage.xml
 
 [testenv]
 whitelist_externals = poetry
 commands =
     poetry install -v
-    poetry run pytest --junitxml=results.xml
+    poetry run pytest --junitxml=results.xml --cov --cov-report xml:coverage.xml