[英]Cursor.execute with
所以我試圖使用cursor.execute在其中運行sql命令
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))
試過了
curs.execute("""INSERT INTO customers (c,n,b,f)
VALUES (%s,%s,%s,%s) WHERE NOT EXISTS (
Select 1
FROM customers
where customerid = %s);""",(cid,name,bdate,ffon,cid)
我現在收到此錯誤
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 ...
我該如何同時插入帶where子句?
在占位符之后,您還有一個多余的括弧,您的子查詢需要進行一些修飾。 請嘗試:
curs.execute("""INSERT INTO customers (c,n,b,f)
VALUES (%s,%s,%s,%s) WHERE NOT EXISTS (
Select 1
FROM customers
where customerid = %s);""",(cid,name,bdate,ffon,cid))
嗯,也許語法是非法的。 嘗試以下方法:
curs.execute("""INSERT INTO customers (c,n,b,f)
VALUES (%s,%s,%s,%s)
ON CONFLICT (customerid) DO NOTHING);""",(cid,name,bdate,ffon,cid))
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