Python 2.7.9 Demo - 019.01.CRUD oracle by cx_Oracle

 select

#coding=utf-8

#!/usr/bin/python

import cx_Oracle;



conn = None;

cursor = None;

try:

    conn = cx_Oracle.connect('username/[email protected]/sid');

    cursor = conn.cursor();

    cursor.execute('select t.empno, t.ename from scott.emp t');

    # 取回的是列表，列表中包含元组

    list = cursor.fetchall();

    print list;



    for record in list:

        print "Record %d is %s!" % (record[0], record[1]);

    

except Exception as e:

    print ('Error : {}'.format(e));

finally:

    cursor.close;

    print 'cursor closed.';

    conn.close;

    print 'connection closed.';

    

 

insert

#coding=utf-8

#!/usr/bin/python

import cx_Oracle;

import time;



conn = None;

cursor = None;

try:

    conn = cx_Oracle.connect('username/[email protected]/sid');

    cursor = conn.cursor();

    tuple = ('1001', 'Nick Huang');

    cursor.execute("insert into scott.emp (empno, ename) values (:1, :2)", tuple);

    conn.commit();

    print 'Insert successfully.';



except Exception as e:

    print ('Error : {}'.format(e));

finally:

    cursor.close;

    print 'cursor closed';

    conn.close;

    print 'connection closed';

    

 

update

#coding=utf-8

#!/usr/bin/python

import cx_Oracle;

import time;



conn = None;

cursor = None;

try:

    conn = cx_Oracle.connect('username/[email protected]/sid');

    cursor = conn.cursor();

    tuple = ('Robin Chen', '1001');

    cursor.execute("update scott.emp t set t.ename = :1 where t.empno = :2", tuple);

    conn.commit();

    print 'Update successfully.';



except Exception as e:

    print ('Error : {}'.format(e));

finally:

    cursor.close;

    print 'cursor closed';

    conn.close;

    print 'connection closed';

    

 

delete

#coding=utf-8

#!/usr/bin/python

import cx_Oracle;

import time;



conn = None;

cursor = None;

try:

    conn = cx_Oracle.connect('username/[email protected]/sid');

    cursor = conn.cursor();

    param_map = {'id' : '1001'};

    cursor.execute("delete from scott.emp t where t.empno = :id", param_map);

    conn.commit();

    print 'Delete successfully.';



except Exception as e:

    print ('Error : {}'.format(e));

finally:

    cursor.close;

    print 'cursor closed';

    conn.close;

    print 'connection closed';