Fix dropbox#50 executemany failed when insert a batch of data to a Hi…

…ve table

pyhive/common.py

@@ -17,6 +17,7 @@
 import datetime
 from future.utils import with_metaclass
 from itertools import islice
+import re
 
 
 class DBAPICursor(with_metaclass(abc.ABCMeta, object)):
@@ -85,12 +86,26 @@ def executemany(self, operation, seq_of_parameters):
 
         Return values are not defined.
         """
-        for parameters in seq_of_parameters[:-1]:
-            self.execute(operation, parameters)
-            while self._state != self._STATE_FINISHED:
-                self._fetch_more()
-        if seq_of_parameters:
-            self.execute(operation, seq_of_parameters[-1])
+        from .hive import _escaper
+        match_insert_sql = re.compile(
+            r"\s*((?:INSERT)\b.+\bVALUES?\s*)(\(\s*(?:%s|%\(.+\)s)\s*(?:,\s*(?:%s|%\(.+\)s)\s*)*\))",
+            re.IGNORECASE | re.DOTALL)
+        match = match_insert_sql.match(operation)
+        if match:
+            part1, part2 = match.group(1), match.group(2).rstrip()
+            values = []
+            for parameter in seq_of_parameters:
+                record = part2 % _escaper.escape_args(parameter)
+                values.append(record)
+            sql = part1 + ",".join(values)
+            self.execute(sql)
+        else:
+            for parameters in seq_of_parameters[:-1]:
+                self.execute(operation, parameters)
+                while self._state != self._STATE_FINISHED:
+                    self._fetch_more()
+            if seq_of_parameters:
+                self.execute(operation, seq_of_parameters[-1])
 
     def fetchone(self):
         """Fetch the next row of a query result set, returning a single sequence, or ``None`` when