在给定的查询中,我试图将表名作为用户的输入:
import MySQLdb
import csv
conn=MySQLdb.connect("localhost","root","","graphdata")
c=conn.cursor()
a= raw_input("Enter the table name")
sql='''SELECT distinct sku FROM %s_management'''
c.execute(sql,str(a))
rows=c.fetchall()
file=open('mine.csv','a+')
for eachRow in rows:
print eachRow
a=eachRow
file.write(str(a)+"\n")
file.close()
我想要的是编译器应该
Enter table name:
我应该输入表格名称
Enter table name: inventory
它应在查询中串联:
sql='''SELECT distinct sku FROM inventory_management'''
但是直到现在我都得到了这些错误:
c.execute(sql,str(a))
File "C:\Python27\lib\site-packages\MySQLdb\cursors.py", line 198, in execute
query = query % args
TypeError: not all arguments converted during string formatting
File "change.py", line 7, in <module>
sql='''SELECT distinct sku FROM %s'''(a)
TypeError: 'str' object is not callable
c.execute("SELECT distinct sku FROM %s_management")(a)
File "C:\Python27\lib\site-packages\MySQLdb\cursors.py", line 219, in execute
self.errorhandler(self, exc, value)
File "C:\Python27\lib\site-packages\MySQLdb\connections.py", line 38, in defau
lterrorhandler
raise errorvalue
_mysql_exceptions.ProgrammingError: (1064, "You have an error in your SQL syntax
; check the manual that corresponds to your MySQL server version for the right s
yntax to use near '%s_management' at line 1")
最佳答案
使用字符串的format()
>>> sql='SELECT distinct sku FROM {}_management'.format(a)
>>> sql
>>> 'SELECT distinct sku FROM inventory_management'
然后,您只需将查询传递给游标:
c.execute(sql)