Fixed bug when fetching numeric data with precision that exceeds 38 as

decimal data.

Author: anthony-tuininga

doc/src/release_notes.rst

@@ -67,6 +67,8 @@ Common Changes
     - Fixed bug when fetching numeric data that has no decimal point but the
       Arrow array has scale > 0
     - Fixed bug when fetching dates that are in the year 2038 or later
+    - Fixed bug when fetching numeric data with precision that exceeds 38 as
+      decimal data
 
     Note the data frame support in python-oracledb 3.3 is a pre-release, and
     may change in a future version.

src/oracledb/impl/base/metadata.pyx

@@ -62,7 +62,8 @@ cdef class OracleMetadata:
             uint8_t py_type_num = self._py_type_num
             uint32_t db_type_num = self.dbtype.num
         if db_type_num == DB_TYPE_NUM_NUMBER:
-            if py_type_num == PY_TYPE_NUM_DECIMAL and self.precision > 0:
+            if py_type_num == PY_TYPE_NUM_DECIMAL \
+                    and self.precision > 0 and self.precision <= 38:
                 self._arrow_type = NANOARROW_TYPE_DECIMAL128
             elif py_type_num == PY_TYPE_NUM_STR:
                 self._arrow_type = NANOARROW_TYPE_STRING