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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
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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
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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
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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
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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
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Install vscode 阅读全文
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#include <stdexcept> #include <chrono> #include <csetjmp> #include <ctime> #include <fstream> #include <iostream> #include <iomanip> #include <signal. 阅读全文
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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
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1.Install libpq-dev sudo apt install libpq-dev locate libpq-fe.h /usr/include/postgresql/libpq-fe.h 2.create table t1 create table t1(id bigserial not 阅读全文
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1.Install libpq-dev sudo apt install libpq-dev locate libpq-fe.h /usr/include/postgresql/libpq-fe.h 2.main.cpp #include <chrono> #include <fstream> #i 阅读全文