查询数据库中所有表的自增主键：
SELECT
t.TABLE_NAME,
c.COLUMN_NAME,
ts.AUTO_INCREMENT
FROM
INFORMATION_SCHEMA.TABLE_CONSTRAINTS AS t,
information_schema.TABLES AS ts,
i
$(document).ready(function(){
var flag = 1;
$("#delBtn").click(function(){
var checked = [];
flag = 0;
$("input:checkbox:checked").each(function() {
check
