我想将一个不包含固定值的变量绑定到python中的SQL语句中:
例子:
import cx_Oracle
def(var1, var2):
....
chkdate = datetime.datetime.now().strftime('%d-%m-%Y')
#some lines of code
def db_select_query(conn_data,query,column_names):
conn_str = 'some user defined data'
conn = cx_Oracle.conn(conn_str)
cur = conn.cursor()
cur.execute(query, chkdate)
#some lines of code
query = """Select * from Table_A where date > :chkdate"""
但这似乎不起作用。我怎样才能做到这一点?