从python执行PL/SQL过程sys.odcinumberlist系统编号列表作为参数

Question

给定PL/SQL过程：

PROCEDURE MyProc(myvar IN sys.odcinumberlist, curout OUT sys_refcursor);

如何使用cx\u Oracle从python执行它？我在努力

cursor.callproc('MyProc', (param, cursor_out))

参数为 [1, 2, 3]或cursor.arrayvar(cx_Oracle.NUMBER, [1, 2, 3]) 但它会导致错误的“错误的参数数量或类型”。你知道吗

Answer 1

使用conn.gettype定义SYS.ODCINUMBERLIST对象。然后使用它来指定值（数字）列表

样品程序

create or replace procedure MyProc( myvar  IN  sys.odcinumberlist, 
                                    curout OUT sys_refcursor )
AS
BEGIN
    open curout for select * from TABLE(myvar);
END;
/

Python代码

conn = cx_Oracle.connect('usr/pwd@//localhost:1521/DB')
cur = conn.cursor()

tableTypeObj  = conn.gettype("SYS.ODCINUMBERLIST")
params = tableTypeObj.newobject()

po_cursor_out = cur.var(cx_Oracle.CURSOR)

params = tableTypeObj([1,2,3])

cur.callproc('hr.myproc', [ params, po_cursor_out])
result_cur = po_cursor_out.getvalue()

for row in result_cur:
    print(row[0])

结果

1
2
3