11 2023 档案

mysql c++ create table,insert,select
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
posted @ 2023-11-21 22:48 FredGrit 阅读(44) 评论(0) 推荐(0) 编辑
Init ubuntu for cpp dev
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
posted @ 2023-11-21 09:18 FredGrit 阅读(23) 评论(0) 推荐(0) 编辑
ubuntu install c++ develop tools package include vscode,g++,pgsql
摘要：Install vscode 阅读全文
posted @ 2023-11-17 23:24 FredGrit 阅读(6) 评论(0) 推荐(0) 编辑
C++ signal(SIGFPE,handler) ignore division by 0 exception
摘要：#include <stdexcept> #include <chrono> #include <csetjmp> #include <ctime> #include <fstream> #include <iostream> #include <iomanip> #include <signal. 阅读全文
posted @ 2023-11-15 22:46 FredGrit 阅读(14) 评论(0) 推荐(0) 编辑
psql
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
posted @ 2023-11-12 20:17 FredGrit 阅读(45) 评论(0) 推荐(0) 编辑
C++ insert into tables of pgsql via libpq-fe.h and compile by g++-13
摘要：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
posted @ 2023-11-10 23:24 FredGrit 阅读(48) 评论(0) 推荐(0) 编辑
C++ ubuntu install libpq-fe.h PGconn PQconnectdb PGresult PQexec PQnfields PQntuples PQfname PQgetvalue
摘要：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
posted @ 2023-11-09 22:06 FredGrit 阅读(79) 评论(0) 推荐(0) 编辑

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