should be it

external/duckdb/extension/parquet/include/parquet_timestamp.hpp

@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//                         DuckDB
+//
+// parquet_timestamp.hpp
+//
+//
+//===----------------------------------------------------------------------===//
+
+#pragma once
+
+#include "duckdb.hpp"
+
+namespace duckdb {
+
+struct Int96 {
+	uint32_t value[3];
+};
+
+timestamp_t ImpalaTimestampToTimestamp(const Int96 &raw_ts);
+timestamp_ns_t ImpalaTimestampToTimestampNS(const Int96 &raw_ts);
+Int96 TimestampToImpalaTimestamp(timestamp_t &ts);
+
+timestamp_t ParquetTimestampMicrosToTimestamp(const int64_t &raw_ts);
+timestamp_t ParquetTimestampMsToTimestamp(const int64_t &raw_ts);
+timestamp_t ParquetTimestampNsToTimestamp(const int64_t &raw_ts);
+
+timestamp_ns_t ParquetTimestampMsToTimestampNs(const int64_t &raw_ms);
+timestamp_ns_t ParquetTimestampUsToTimestampNs(const int64_t &raw_us);
+timestamp_ns_t ParquetTimestampNsToTimestampNs(const int64_t &raw_ns);
+
+date_t ParquetIntToDate(const int32_t &raw_date);
+dtime_t ParquetMsIntToTime(const int32_t &raw_millis);
+dtime_t ParquetIntToTime(const int64_t &raw_micros);
+dtime_t ParquetNsIntToTime(const int64_t &raw_nanos);
+
+dtime_ns_t ParquetMsIntToTimeNs(const int32_t &raw_millis);
+dtime_ns_t ParquetUsIntToTimeNs(const int64_t &raw_micros);
+dtime_ns_t ParquetIntToTimeNs(const int64_t &raw_nanos);
+
+dtime_tz_t ParquetIntToTimeMsTZ(const int32_t &raw_millis);
+dtime_tz_t ParquetIntToTimeTZ(const int64_t &raw_micros);
+dtime_tz_t ParquetIntToTimeNsTZ(const int64_t &raw_nanos);
+
+} // namespace duckdb