Hello, everyone. nginx log currently has about 100000 rows of data a day. Now I have parsed each field with python. Now I want to insert it into the mysql database. It is too slow to use for. Is there any good way to do it? ...
such as the title. see that MySQL generates a tree for the primary key, and the leaf node holds the row data corresponding to the primary key. The secondary index leaf node holds the value of the primary key. excuse me: does the leaf node of th...
SessionHandler.php the contents of the file are as follows <?php namespace Dry Base; class SessionHandler{ private $pdo = null; private $lifeTime = 1440; public function __construct($pdo) { $this->pdo = $pdo; ...
I use only one primary key on the innodb, table and a clustered index (the default is a clustered index). In my query statement, the where condition is this primary key, but the query column is arbitrary. I found that the extra of the execution plan is ...
A a_id a_title a_key a_desc a_pid 1 A A A 1 B b_id b_title b_key b_desc b_pid 1 b 2 C c_id c_title c_key c_desc c_pid 1 $title= Ctitile || ...
A crawler was used before hanging up, and an error of 2006-MySQL server has gone away occurred when entering the library. According to Baidu, change the my.conf file max_allowed_packet=500M wait_timeout=288000 After interactive_timeout = 288000 , t...
login Code: $.ajax({ url: " login userlogin", data: { username: $("-sharpusername").val(), userpwd: $("-sharpuserpwd").val() }, ...
mysql is set to unsigned and double when no error is reported when inserting a number less than 0, it will automatically become 0, but not an error. I need him to report an error and run a rollback in the transaction. How should I set ?...
batch updates of mysql update in nodejs is passed in an array, and the former affects the latter for example, [id,num] [[1jue 3], [2jue 5], [6je 8]] . SET num=? WHERE id=? ...
in mysql, set a regular expression to filter strings ending in number select number from test where number REGEXP xxxxxxxxx . ...
ask the elders, want to extract the user name and password from the mysql to verify the login, the mysql table clearly has data, but the request is to return an empty array, check the database statement can not see the problem, I would like to ask the s...
it is necessary to build a php integrated development environment on this machine. Whether it can be deployed in the cloud can be found directly through the public network ip! ...
if the data to be saved contains "`, how can it be inserted into the database? A rookie, please give me some advice. ...
1.bootstrap-treeview onNodeExpanded gets the current height, but each time it gets the height before deployment. I want to get the current height after deployment 2. 3.console.log (event) sees that the clientHeight inside is 1049; but console.log...
existing column of DATE data is date plus time, for example: 2018-01-01 15:00:30 now you want to calculate the date in the DATE column to the corresponding Saturday and enter it into the WEEKEND column in order. As long as the date is not time, how to...
< H2 > hierarchical relationship table (processed using baum) < H2 > when the distributor buys, the performance automatically adds up to all his superiors monthly performance the settlement method determines whether the minimum settlement ra...
the api I am talking to now is a request from others. is to use curl to catch the opposite party http. I give it to the opposite party json , and then the opposite party gives back to me json, and then I show it (using mongodb, nodejs) ). it s just t...
var a = "12714 " select * from table where id in ${a} Why does this sql return only one piece of data for advice ...
mysql no compatible servers were found.you ll need to cancel this wizard and insta cannot check.. either ...
after initialization of the container, there is no problem with installing mysql-server and starting it for the first time, but when I exit the container and enter again, I will not be able to start mysql-server normally the following error was return...
found a similar effect on the Internet: ...
problem description Wechat JSSDK config displays OK,checkJsApi, shows OK, and then there is no response. It does not play the sharing interface and does not report an error . the environmental background of the problems and what methods you have trie...
problem description how do I update a user s attribute automatically when multiple conditions are reached in java? the environmental background of the problems and what methods you have tried the current implementation is to insert the code that ...
webpack is 3.10. Practice using cleanWebpackPlugin to delete old files under dist. I m using webpack-w to listen for file changes and package automatically. But only when you start webpack-w for the first time, the last packaged file is deleted, any c...
s = f"""{fsdfsdfsdfsdfsdf{2}dsfsdfsdffsf}""" error SyntaxError: invalid syntax < H2 > what should I do with {} nested in fstring? < H2 > ...