所以我尝试使用光标.执行在哪里
cid = data[key]['customerid']
name = data[key]['name']
bdate = data[key]['birthdate']
ffon = data[key]['frequentflieron']
curs.execute("INSERT INTO customers (c,n,b,f) VALUES (%s,%s,%s,%s)) WHERE NOT EXISTS (Select 1 FROM customers WHERE customerid = (c) VALUES (%s));",(cid,name,bdate,ffon,cid))
试过了
^{pr2}$我现在得到了这个错误
Traceback (most recent call last):
File "psy.py", line 44, in <module>
custinfo(data,key)
File "psy.py", line 28, in custinfo
where customerid = %s);""",(cid,name,bdate,ffon,cid))
psycopg2.ProgrammingError: syntax error at or near "WHERE"
LINE 2: ...ust1000','XYZ','1991-12-06','Southwest Airlines') WHERE NOT ...
如何同时使用where子句执行insert?在
占位符后面有一个额外的右括号,您的子查询需要一些修饰。试试看:
嗯,也许那个语法是非法的。试试这个:
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