diff --git a/c/driver/sqlite/statement_reader.c b/c/driver/sqlite/statement_reader.c
index 9e02ee3b80..909fd854c7 100644
--- a/c/driver/sqlite/statement_reader.c
+++ b/c/driver/sqlite/statement_reader.c
@@ -608,15 +608,14 @@ int StatementReaderGetOneValue(struct StatementReader* reader, int col,
       return ArrowArrayAppendBytes(out, value);
     }
 
-    default: {
-      snprintf(reader->error.message, sizeof(reader->error.message),
-               "[SQLite] Internal error: unknown inferred column type %d",
-               reader->types[col]);
-      return ENOTSUP;
-    }
+    default:
+      break;
   }
 
-  return 0;
+  snprintf(reader->error.message, sizeof(reader->error.message),
+           "[SQLite] Internal error: unknown inferred column type %d",
+           reader->types[col]);
+  return ENOTSUP;
 }
 
 int StatementReaderGetNext(struct ArrowArrayStream* self, struct ArrowArray* out) {
diff --git a/ci/scripts/python_util.sh b/ci/scripts/python_util.sh
index 635e50e520..027caf4980 100644
--- a/ci/scripts/python_util.sh
+++ b/ci/scripts/python_util.sh
@@ -25,7 +25,7 @@ function build_drivers {
     local -r source_dir="$1"
     local -r build_dir="$2/${VCPKG_ARCH}"
 
-    : ${CMAKE_BUILD_TYPE:=release}
+    : ${CMAKE_BUILD_TYPE:=RelWithDebInfo}
     : ${CMAKE_UNITY_BUILD:=ON}
     : ${CMAKE_GENERATOR:=Ninja}
     : ${VCPKG_ROOT:=/opt/vcpkg}
diff --git a/ci/scripts/python_wheel_unix_build.sh b/ci/scripts/python_wheel_unix_build.sh
index fa614bfded..a904230c1d 100755
--- a/ci/scripts/python_wheel_unix_build.sh
+++ b/ci/scripts/python_wheel_unix_build.sh
@@ -88,6 +88,9 @@ check_visibility $ADBC_SNOWFLAKE_LIBRARY
 # Get the latest pip so we have in-tree-build by default
 python -m pip install --upgrade pip auditwheel cibuildwheel delocate setuptools wheel
 
+# Build with Cython debug info
+export ADBC_BUILD_TYPE="debug"
+
 for component in $COMPONENTS; do
     pushd ${source_dir}/python/$component
 
diff --git a/ci/scripts/python_wheel_windows_build.bat b/ci/scripts/python_wheel_windows_build.bat
index b57338ba1c..4bc8a6f240 100644
--- a/ci/scripts/python_wheel_windows_build.bat
+++ b/ci/scripts/python_wheel_windows_build.bat
@@ -22,7 +22,7 @@ set build_dir=%2
 
 echo "=== (%PYTHON_VERSION%) Building ADBC libpq driver ==="
 
-set CMAKE_BUILD_TYPE=release
+set CMAKE_BUILD_TYPE=RelWithDebInfo
 set CMAKE_GENERATOR=Visual Studio 17 2022
 set CMAKE_GENERATOR_PLATFORM=x64
 set CMAKE_UNITY_BUILD=ON
@@ -61,6 +61,9 @@ set ADBC_POSTGRESQL_LIBRARY=%build_dir%\bin\adbc_driver_postgresql.dll
 set ADBC_SQLITE_LIBRARY=%build_dir%\bin\adbc_driver_sqlite.dll
 set ADBC_SNOWFLAKE_LIBRARY=%build_dir%\bin\adbc_driver_snowflake.dll
 
+# Build with Cython debug info
+set ADBC_BUILD_TYPE=debug
+
 popd
 
 python -m pip install --upgrade pip delvewheel wheel || exit /B 1