我正在使用laravel 5.5,并使用此查询检查事件时隙是否在两次之间可用: ->wherebetween($start', [$date,$endTime])得到这个错误 “消息”:"SQLSTATE42S22:未找到列:1054未知列&# 浏览1提问于2019-03-08得票数 0 1回答 如何使用Laravel Query Builder选择范围内至少有多列的数据? laravel、eloquent、laravel-quer...
1select * from posts where created_at >= 'timestamp-here' 14. avoid adding too many columns to a table It is better to limit the total no of columns in a table. Relational databases likemysql, can be leveraged to split the tables with so many columns into multiple tables. They can b...
If you would like to use a "where" clause on your joins, you may use the where and orWhere methods provided by the JoinClause instance. Instead of comparing two columns, these methods will compare the column against a value:1DB::table('users') 2 ->join('contacts', function (Join...
If you would like to use a "where" clause on your joins, you may use the where and orWhere methods provided by the JoinClause instance. Instead of comparing two columns, these methods will compare the column against a value:1DB::table('users') 2 ->join('contacts', function (Join...
laravel 使用两个日期之间的范围获取两列之间的记录，同时搜索筛选条件尝试上面的代码这也将返回start_date...
User::where('name', 'John Doe')->increment('age'); User::where('name', 'Jaques')->decrement('weight', 50); The number of updated objects is returned: $count = User->increment('age'); You may also specify additional columns to update: ...
DB::table('table')->select('*')->where('col', 1); 是不是很方便? CRUD 与语法编译器 相应于 connection 对象的 CRUD,语法编译器有 compileInsert、compileSelect、compileUpdate、compileDelete。其中最重要的是 compileSelect,因为它不仅负责了 select 语句的语法编译,还负责聚合语句 aggregate、from 语句、...
本文档前言 Laravel 文档写的很好,只是新手看起来会有点吃力,需要结合经验和网上的文章,多读、细读才能更好的理解。Again,多读、细读官方文档。本文类似于一个大纲,欲知其中详情,且去细读官方文档:Laravel 5.5 docs。### ### ###
findWhereBetween($field, array $where, $columns = [*]) create(array $attributes) update(array $attributes, $id) updateOrCreate(array $attributes, array $values = []) delete($id) deleteWhere(array $where) orderBy($column, $direction = 'asc'); with(array $relations); has(string $relat...
(can be customized by overriding `\Rebing\GraphQL\GraphQLController::queryContext` // The return value should be the query builder or void 'query' => function (array $args, $query, $ctx): void { $query->addSelect('some_column') ->where('posts.created_at', '>', $args['date_...