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Fix query pandas data frame with index #381

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Merged
merged 2 commits into from
Sep 17, 2025
Merged

Fix query pandas data frame with index #381

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ca291aa
fix: fix query pandas data frame with index
wudidapaopao Sep 14, 2025
f14077d
fix: fix tests
wudidapaopao Sep 15, 2025
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3 changes: 2 additions & 1 deletion .github/workflows/build_macos_arm64_wheels.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -78,7 +78,8 @@ jobs:
brew update
brew install ca-certificates lz4 mpdecimal openssl@3 readline sqlite xz z3 zstd
brew install --ignore-dependencies llvm@19
brew install git ccache ninja libtool gettext gcc binutils grep findutils nasm
brew install git ninja libtool gettext gcc binutils grep findutils nasm
brew install --build-from-source ccache
brew install go
cd /usr/local/opt/ && sudo rm -f llvm && sudo ln -sf llvm@19 llvm
export PATH=$(brew --prefix llvm@19)/bin:$PATH
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3 changes: 2 additions & 1 deletion .github/workflows/build_macos_x86_wheels.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -78,7 +78,8 @@ jobs:
brew update
brew install ca-certificates lz4 mpdecimal openssl@3 readline sqlite xz z3 zstd
brew install --ignore-dependencies llvm@19
brew install git ccache ninja libtool gettext gcc binutils grep findutils nasm
brew install git ninja libtool gettext gcc binutils grep findutils nasm
brew install --build-from-source ccache
brew install go
cd /usr/local/opt/ && sudo rm -f llvm && sudo ln -sf llvm@19 llvm
export PATH=$(brew --prefix llvm@19)/bin:$PATH
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2 changes: 1 addition & 1 deletion programs/local/PythonUtils.cpp
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Expand Up @@ -146,7 +146,7 @@ const void * tryGetPyArray(const py::object & obj, py::handle & result, py::hand
// chdb todo: need more type check
if (row_count > 0)
{
auto elem_type = obj.attr("__getitem__")(0).attr("__class__").attr("__name__").cast<std::string>();
auto elem_type = obj.attr("iloc").attr("__getitem__")(0).attr("__class__").attr("__name__").cast<std::string>();
if (elem_type == "str" || elem_type == "unicode")
{
result = array;
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34 changes: 34 additions & 0 deletions tests/test_query_py.py
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Expand Up @@ -110,6 +110,40 @@ def test_query_df(self):
ret = chdb.query("SELECT b, sum(a) FROM Python(df) GROUP BY b ORDER BY b")
self.assertEqual(str(ret), EXPECTED)

def test_query_df_with_index(self):
df = pd.DataFrame(
{
"a": [1, 2, 3, 4, 5, 6],
"b": ["tom", "jerry", "auxten", "tom", "jerry", "auxten"],
},
index=[3, 1, 2, 4, 5, 6],
)

ret = chdb.query("SELECT * FROM Python(df)")
self.assertIn("tom", str(ret))

df = pd.DataFrame(
{
"a": [1, 2, 3, 4, 5, 6],
"b": ["tom", "jerry", "auxten", "tom", "jerry", "auxten"],
},
index=[0, 1, 2, 4, 5, 6],
)

ret = chdb.query("SELECT * FROM Python(df)")
self.assertIn("tom", str(ret))

df = pd.DataFrame(
{
"a": [1, 2, 3, 4, 5, 6],
"b": ["tom", "jerry", "auxten", "tom", "jerry", "auxten"],
},
index=['a', 1, 2, 4, 5, 6],
)

ret = chdb.query("SELECT * FROM Python(df)")
self.assertIn("tom", str(ret))

def test_query_arrow(self):
table = pa.table(
{
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