# ERPNext - web based ERP (http://erpnext.com)
# Copyright (C) 2012 Web Notes Technologies Pvt Ltd
# 
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from __future__ import unicode_literals
"""
	Removes duplicate entries created in 
"""
import webnotes
def execute():
	res = webnotes.conn.sql("""\
		SELECT a.name
		FROM
			`tabTable Mapper Detail` a,
			`tabTable Mapper Detail` b
		WHERE
			a.parent = b.parent AND
			a.from_table = b.from_table AND
			a.to_table = b.to_table AND
			a.from_field = b.from_field AND
			a.to_field = b.to_field AND
			a.name < b.name""")
	if res and len(res)>0:
		name_string = ", ".join(["'" + str(r[0]) + "'" for r in res])
		res = webnotes.conn.sql("""\
			DELETE FROM `tabTable Mapper Detail`
			WHERE name IN (%s)""" % name_string)
