Fixed an issue where CSV download quotes the numeric columns. Fixes #6341

docs/en_US/release_notes_5_3.rst

@@ -17,4 +17,5 @@ Housekeeping
 Bug fixes
 *********
 
+| `Issue #6341 <https://redmine.postgresql.org/issues/6341>`_ -  Fixed an issue where CSV download quotes the numeric columns.
 | `Issue #6385 <https://redmine.postgresql.org/issues/6385>`_ -  Ensure that Backup and Restore should work on shared servers.

web/pgadmin/utils/driver/psycopg2/connection.py

@@ -30,7 +30,7 @@ from pgadmin.utils.exception import ConnectionLost, CryptKeyMissing
 from pgadmin.utils import get_complete_file_path
 from ..abstract import BaseConnection
 from .cursor import DictCursor
-from .typecast import register_global_typecasters, \
+from .typecast import register_float_typecasters, register_global_typecasters,\
     register_string_typecasters, register_binary_typecasters, \
     unregister_numeric_typecasters, \
     register_array_to_string_typecasters, ALL_JSON_TYPES
@@ -462,6 +462,7 @@ class Connection(BaseConnection):
         self._set_auto_commit(kwargs)
 
         register_string_typecasters(self.conn)
+        register_float_typecasters(self.conn)
 
         if self.array_to_string:
             register_array_to_string_typecasters(self.conn)
@@ -911,6 +912,8 @@ WHERE db.datname = current_database()""")
 
         # Registering back type caster for large size data types to string
         # which was unregistered at starting
+        if any(type['type_code'] == 701 for type in self.column_info):
+            register_float_typecasters(self.conn)
         register_string_typecasters(self.conn)
         return True, gen
 

web/pgadmin/utils/driver/psycopg2/typecast.py

@@ -13,6 +13,7 @@ data types.
 """
 
 from psycopg2 import STRING as _STRING
+from psycopg2.extensions import FLOAT as _FLOAT
 from psycopg2.extensions import DECIMAL as _DECIMAL, encodings
 import psycopg2
 from psycopg2.extras import Json as psycopg2_json
@@ -203,6 +204,14 @@ def register_string_typecasters(connection):
         psycopg2.extensions.register_type(unicode_array_type, connection)
 
 
+def register_float_typecasters(connection):
+    # This function is to convert  pg types into decimal type
+    string_type_to_float = \
+        psycopg2.extensions.new_type(TO_STRING_NUMERIC_DATATYPES,
+                                     'TYPECAST_TO_DECIMAL', _DECIMAL)
+    psycopg2.extensions.register_type(string_type_to_float, connection)
+
+
 def register_binary_typecasters(connection):
     psycopg2.extensions.register_type(
         psycopg2.extensions.new_type(