#!/bin/python #!_*_conding:UTF-8_*_ import os import json r=open('url.txt','r').read().split() #读取url.txt文件返回数组 u=open('user.txt','r').read().split() devices=[] #定义devices类型为数组list users=[] a = 0 for devpath in r: user = u[a]
知道一个字段名,怎样查到它在数据库里的哪张表里,mysql USE Information_schema; SELECT TABLE_NAME FROM COLUMNS WHERE COLUMN_NAME='字段名称'; 清空具有外键约束的表时报ERROR 1701(42000)的解决 ERROR 1701 (42000): Cannot truncate a table referenced in a foreign key constraint (`furion`.`tbl_frn_al