The database query builder provides a convenient, fluent interface to creating and running database queries. It can be used to perform most database operations in your application, and works on all supported database systems.The Laravel query builder uses PDO parameter binding to protect your ...
The query builder also provides an insert method for inserting records into the database table. The insert method accepts an array of column names and values to insert:1DB::table('users')->insert( 2 ['email' => 'john@example.com', 'votes' => 0] 3);...
查询构建器建立在Database Access Objects基础之上,可让你创建 程序化的、DBMS无关的SQL语句。相比于原生的SQL语句,查询构建器可以帮你 写出可读性更强的SQL相关的代码,并生成安全性更强的SQL语句。 使用查询构建器通常包含以下两个步骤: 创建一个yii\db\Query对象来代表一条 SELECT SQL 语句的不同子句(例如SELECT...
use PicoDb\UrlParser; use PicoDb\Database; $db = new Database(UrlParser::getInstance()->getSettings('postgres://user:pass@hostname:6212/db'));Execute any SQL query$db->execute('CREATE TABLE mytable (column1 TEXT)');Returns a PDOStatement if successful Returns false if there is a ...
(socket file has to be explicitly set on the server's side with '--urpcaddr' option) // Database should be created explicitly via reindexer_tool or via WithCreateDBIfMissing option: // If server security mode is enabled, then username and password are mandatory // db := reindexer.New...
<?phpfunction requestToDB($connection,$request){ if(!$result=pg_query($connection,$request)){ return False; }$combined=array(); while ($row = pg_fetch_assoc($result)) {$combined[]=$row; } return $combined;}?>Example:<?php$conn = pg_pconnect("dbname=mydatabase");$results=...
(PHP 5, PHP 7) mysqli :: query - mysqli_query - 对数据库执行查询 描述 面向对象的风格 代码语言:javascript 复制 mixed mysqli::query(string $query[,int $resultmode=MYSQLI_STORE_RESULT]) 程序风格 代码语言:javascript 复制 mixedmysqli_query(mysqli $link,string $query[,int $resultmode=MYSQL...
I have a database with a few tables. module (360k rows) format author path collect each module has an author a format and possible a path and collect and i join them like SELECT module_name,author.author_id,author_name,format.format_id,format_name,collect.collect_id,collect_...
maxdb_multi_query -- maxdb::multi_query— Performs a query on the database说明 过程化风格 maxdb_multi_query ( resource $link , string $query ) : bool 面向对象风格 maxdb::multi_query ( string $query ) : bool The maxdb_multi_query() works like the function maxdb_query(). Multiple que...
You have a tough problem. * %drax% requires a table scan -- slow, and gets slower as the table grows * multi-table join * ORDER BY...LIMIT can't easily be calculated from an index. Subject Written By Posted Query performance on database with joins ...