FredGrit

摘要： drop procedure if exists insert_into_t2_sp; DELIMITER // CREATE PROCEDURE insert_into_t2_sp() BEGIN DECLARE i INT DEFAULT 2; WHILE (i <= 1000000) DO I 阅读全文

摘要： #include <chrono> #include <cstring> #include <ctime> #include <fstream> #include <iomanip> #include <iomanip> #include <iostream> #include <memory> # 阅读全文

摘要： int main(int args, char **argv) { system("notify-send 'title' 'message'"); system("notify-send 'title:update failed' 'message:update clause failed'"); 阅读全文

摘要： mysql> select @@version; + + | @@version | + + | 8.0.35-0ubuntu0.23.04.1 | + + 1 row in set (0.00 sec) mysql> create table t4(id bigint unsigned auto_ 阅读全文

摘要： mysql> show create table t3; + + + | Table | Create Table | + + + | t3 | CREATE TABLE `t3` ( `id` bigint unsigned NOT NULL AUTO_INCREMENT, `create_tim 阅读全文

摘要： CREATE TABLE `t1` ( `id` bigint unsigned NOT NULL AUTO_INCREMENT primary key, `author` varchar(40) NOT NULL DEFAULT '', `comment` varchar(40) NOT NULL 阅读全文

摘要： sudo apt update;sudo apt upgrade -y; sudo apt-get install open-vm-tools-desktop;sudo apt-get install open-vm-tools; wget https://dl.google.com/linux/d 阅读全文

摘要： Install vscode 阅读全文

摘要： #include <stdexcept> #include <chrono> #include <csetjmp> #include <ctime> #include <fstream> #include <iostream> #include <iomanip> #include <signal. 阅读全文

摘要： 1.install psql sudo apt install postgresql postgresql-contrib; sudo apt-get install postgresql-client; 2.login as the default user postgres sudo -u po 阅读全文