cx_Oracle模块学习之绑定变量

有些时候我们需要和程序交互，此时需要绑定量
下面两个例子简介在SELECT 和 DML 里面绑定变量的用法

SELECT 里面的绑定变量

 

import cx_Oracle

conn=cx_Oracle.connect('hr/hr@orcl')
cur=conn.cursor()

dept_id=raw_input('\n please input department ID you want to search:')
dept_name=raw_input(' please input department name you want to seaarch:')

cur.execute('''select * from departments
                where department_id=:id and
                      department_name=:name
            ''',id=dept_id,name=dept_name
            )

rows=cur.fetchall()
print '\ninformation are as following:'
for row in rows:
  print row

cur.close()
conn.close()

 

DML 里面的绑定变量

 

import cx_Oracle

conn=cx_Oracle.connect('hr/hr@orcl')
cur=conn.cursor()


cur.execute('''insert into departments (department_id,department_name,manager_id,location_id) 
               values(:ID,:NAME,:MGR_ID,:LOC_ID)
              ''', {'ID':555,'NAME':'WaterBin','MGR_ID':110,'LOC_ID':7788}
           )
cur.close()
conn.commit()
conn.close()