TypeError:格式字符串Python3 MySQL的参数不足
我已经编写了一个web应用程序,它接受输入并将其存储在MySQL数据库中。我在web应用程序上创建了一个搜索字段,这样就可以输入一个字符串,它将在所有列中搜索数据输入并返回它 最初,我用于搜索的pymysql脚本如下所示TypeError:格式字符串Python3 MySQL的参数不足,python,mysql,typeerror,pymysql,Python,Mysql,Typeerror,Pymysql,我已经编写了一个web应用程序,它接受输入并将其存储在MySQL数据库中。我在web应用程序上创建了一个搜索字段,这样就可以输入一个字符串,它将在所有列中搜索数据输入并返回它 最初,我用于搜索的pymysql脚本如下所示 try: with connection.cursor(pymysql.cursors.DictCursor) as cursor: sql = """SELECT * FROM main WHERE Concat(idDirectConnect_I
try:
with connection.cursor(pymysql.cursors.DictCursor) as cursor:
sql = """SELECT * FROM main WHERE Concat(idDirectConnect_ID,
CR_Number,
VPC_Name,
Creator_Name,
Route_Domain,
OSPF_ASN,
OSPF_VLAN,
OSPF_Subnet,
BGP_VLAN,
BGP_Subnet,
BGP_AuthKey is null,
AWS_Expected_Subnet,
AWS_Acnt,
Company_Name,
Lpbck_Int,
Lpbck_IPAddr,
Tunnel_Num1,
Tunnel_Num2,
VPN_Tunnel1_Dest is null,
VPN_Int1_CryptoKey is null,
VPN_Tun1_IP is null,
VPN_Tunnel2_Dest is null,
VPN_Int2_CryptoKey is null,
VPN_Tun2_IP is null,
AWS_VPN_ConnectionID is null)
LIKE %s;"""
cursor.execute(sql, ('%{}%'.format(sql_var)))
result = cursor.fetchall()
return result
finally:
connection.close()
除非标记为空的列中有数据,否则此操作有效。这些列在第一次创建时为空,my在一段时间内保持为空,但是其他列中有可搜索的数据
因此,我尝试将搜索查询更新为:
try:
with connection.cursor() as cursor:
sql = """SELECT * FROM main WHERE (idDirectConnect_ID LIKE %s
OR CR_Number LIKE %s
OR VPC_Name LIKE %s
OR Creator_Name LIKE %s
OR Route_Domain LIKE %s
OR OSPF_ASN LIKE %s
OR OSPF_VLAN LIKE %s
OR OSPF_Subnet LIKE %s
OR BGP_VLAN LIKE %s
OR BGP_Subnet LIKE %s
OR AWS_Expected_Subnet LIKE %s
OR AWS_Acnt LIKE %s
OR Company_Name LIKE %s
OR Lpbck_Int LIKE %s
OR Lpbck_IPAddr LIKE %s
OR Tunnel_Num1 LIKE %s
OR Tunnel_Num2 LIKE %s
OR BGP_AuthKey LIKE %s
OR VPN_Tunnel1_Dest LIKE %s
OR VPN_Int1_CryptoKey LIKE %s
OR VPN_Tun1_IP LIKE %s
OR VPN_Tunnel2_Dest LIKE %s
OR VPN_Int2_CryptoKey LIKE %s
OR VPN_Tun2_IP LIKE %s
OR AWS_VPN_ConnectionID LIKE %s);"""
cursor.execute(sql, ", ".join(["'%{}%'".format(sql_var)]*25))
result = cursor.fetchall()
return result
finally:
connection.close()
但我得到了:
query = query % self._escape_args(args, conn)
TypeError: not enough arguments for format string
我原来只有:
cursor.execute(sql, ('%{}%'.format(sql_var)))
但我意识到没有足够的参数用于所有%s,因此我将cursor.execute更改为:
cursor.execute(sql, ", ".join(["'%{}%'".format(sql_var)]*25))
现在它回来了:
"'%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%', '%206%'"
我数了又数,我数了又数%s,应该足够了
我已经阅读了尽可能多的类似文章和MySQL文档。此时,我怀疑可能需要将光标更改为ExecuteMay,但这只是猜测。比尔
谢谢,这为我指明了正确的方向
这是我的工作代码:
try:
with connection.cursor(pymysql.cursors.DictCursor) as cursor:
sql = """SELECT * FROM main WHERE (idDirectConnect_ID LIKE %s
OR CR_Number LIKE %s
OR VPC_Name LIKE %s
OR Creator_Name LIKE %s
OR Route_Domain LIKE %s
OR OSPF_ASN LIKE %s
OR OSPF_VLAN LIKE %s
OR OSPF_Subnet LIKE %s
OR BGP_VLAN LIKE %s
OR BGP_Subnet LIKE %s
OR AWS_Expected_Subnet LIKE %s
OR AWS_Acnt LIKE %s
OR Company_Name LIKE %s
OR Lpbck_Int LIKE %s
OR Lpbck_IPAddr LIKE %s
OR Tunnel_Num1 LIKE %s
OR Tunnel_Num2 LIKE %s
OR BGP_AuthKey LIKE %s
OR VPN_Tunnel1_Dest LIKE %s
OR VPN_Int1_CryptoKey LIKE %s
OR VPN_Tun1_IP LIKE %s
OR VPN_Tunnel2_Dest LIKE %s
OR VPN_Int2_CryptoKey LIKE %s
OR VPN_Tun2_IP LIKE %s
OR AWS_VPN_ConnectionID LIKE %s);"""
cursor.execute(sql, list(['%{}%'.format(sql_var)]*25))
result = cursor.fetchall()
return result
finally:
connection.close()
我还必须将游标改回DictCursor,因为python代码的其余部分需要这种格式。在“Now it's returning”下面有一个字符串。如果查看,您将看到
execute
的第二个参数应该是元组或字典。