Python中使用cx_Oracle调用Oracle存储过程
首先,在数据库端创建简单的存储过程。
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create or replace procedure test_msg(i_user in varchar2, o_msg out varchar2) is
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begin
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o_msg := i_user ||', Good Morning!';
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end;
然后,开始在Python命令行中进行存储过程调用。
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import cx_Orace as cx
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conn = cx.connect('database connecting string')
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cursor = conn.cursor()
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#声明变量
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user = 'Nick' #plsql入参
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msg = cursor.var(cx_Oracle.STRING) #plsql出参
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#调用存储过程
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cursor.callproc('test_msg', [user, msg]) #['Nick', 'Nick, Good Morning!']
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#打印返回值
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print msg #<cx_Oracle.STRING with value 'Nick, Good Morning!'>
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print msg.getvalue() #Nick, Good Morning!
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#资源关闭
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cursor.close()
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conn.close()
延伸阅读:
存储过程、cx_Oracle、Python的对象类型之间存在转换关系。具体如下:
Oracle |
cx_Oracle |
Python |
VARCHAR2 |
cx_Oracle.STRING |
str |
CHAR |
cx_Oracle.FIXED_CHAR |
|
NUMBER |
cx_Oracle.NUMBER |
int |
FLOAT |
float |
|
DATE |
cx_Oracle.DATETIME |
datetime.datetime |
TIMESTAMP |
cx_Oracle.TIMESTAMP |
|
CLOB |
cx_Oracle.CLOB |
cx_Oracle.LOB |
BLOB |
cx_Oracle.BLOB |
转载于:https://blog.51cto.com/pierre/1623820