diff --git a/docs/postgresql.md b/docs/postgresql.md
new file mode 100644
index 0000000..39d3b26
--- /dev/null
+++ b/docs/postgresql.md
@@ -0,0 +1,20 @@
+# POSTGRESQL 
+
+## create database
+create database testdb;
+
+## create user 
+
+create role guest with login;
+
+## grat privileges
+
+grant all privileges on database testdb to guest;
+
+### grant table privileges
+
+psql -d testdb
+
+grant all privileges on all tables in schema public to guest;
+
+
diff --git a/sqlor/aiopostgresqlor.py b/sqlor/aiopostgresqlor.py
index 7094ebc..1a9f8f4 100755
--- a/sqlor/aiopostgresqlor.py
+++ b/sqlor/aiopostgresqlor.py
@@ -5,4 +5,6 @@ class AioPostgresqlor(PostgreSQLor):
 	def isMe(self,name):
 		return name=='aiopg'
 
+	async def commit(self):
+		pass
 
diff --git a/sqlor/dbpools.py b/sqlor/dbpools.py
index de9c9ae..397817f 100755
--- a/sqlor/dbpools.py
+++ b/sqlor/dbpools.py
@@ -256,7 +256,10 @@ class DBPools:
 		await p.release(conn)
 		"""
 		if self.isAsyncDriver(dbname):
-			await cur.close()
+			try:
+				await cur.close()
+			except:
+				pass
 		else:
 			try:
 				cur.fetchall()
diff --git a/sqlor/ddl_template_postgresql.py b/sqlor/ddl_template_postgresql.py
index 4d73127..a6c13b4 100755
--- a/sqlor/ddl_template_postgresql.py
+++ b/sqlor/ddl_template_postgresql.py
@@ -4,7 +4,7 @@ VARCHAR({{len}})
 {%- elif type=='char' -%}
 CHAR({{len}})
 {%- elif type=='long' or type=='int' or type=='short' -%}
-INTEGER
+NUMERIC(30,0)
 {%- elif type=='float' or type=='double' or type=='ddouble' -%}
 NUMERIC({{len}},{{dec}})
 {%- elif type=='date' -%}
diff --git a/sqlor/postgresqlor.py b/sqlor/postgresqlor.py
index 15895c1..243b1c2 100755
--- a/sqlor/postgresqlor.py
+++ b/sqlor/postgresqlor.py
@@ -38,7 +38,7 @@ class PostgreSQLor(SQLor):
 	}
 	@classmethod
 	def isMe(self,name):
-		return name=='psycopg2' or name=='aiopg' or name=='pyguass'
+		return name=='psycopg2' or name=='pyguass'
 
 	def grammar(self):
 		return {
@@ -48,13 +48,13 @@ class PostgreSQLor(SQLor):
 	def placeHolder(self,varname,i):
 		if varname=='__mainsql__' :
 			return ''
-		return '$%d' % i
+		return '%%(%s)s' % varname
 	
 	def dataConvert(self,dataList):
-		x = super().dataConvert(dataList)
-		if x == []:
-			return None
-		return x
+		if type(dataList) == type({}):
+			return dataList
+		d = { i['name']:i['value'] for i in dataList }
+		return d
 
 	def pagingSQLmodel(self):
 		return u"""select * 
diff --git a/sqlor/sor.py b/sqlor/sor.py
index 49108e3..a622f90 100755
--- a/sqlor/sor.py
+++ b/sqlor/sor.py
@@ -201,7 +201,7 @@ class SQLor(object):
 		using a opened cursor to run a SQL statment with variable, the variable is setup in NS namespace
 		return a cursor with data
 		"""					
-		markedSQL,datas = self.maskingSQL(sql,NS)
+		markedSQL, datas = self.maskingSQL(sql,NS)
 		datas = self.dataConvert(datas)
 		try:
 			if self.async_mode: