Table of Contents
使用laravel 生成 带括号的sql,laravelsql
SQL语句字段名是英文的并且带英文括号,查询出错?
在SQL2000建立表user level等自动加括号
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使用laravel 生成 带括号的sql,laravelsql

Jun 13, 2016 am 09:27 AM
sql statement

使用laravel 生成 带括号的sql,laravelsql

laravel query builder use where case   I want to  sql like that :  
<span>select</span> <span>*</span> <span>from</span> `wxm_ticket` <span>where</span> `wxm_ticket`.`deleted_at` <span>is</span> <span>null</span> <span>and</span> `<span>user_id</span>` <span>=</span> ? <span>and</span> `sell_status` <span>=</span> ? <span>and</span> (`stop_sell` <span>is</span> <span>null</span> <span>or</span> `stop_sell` <span>>=</span> ?)
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php code:
<span>$query</span> = TicketModel::user(<span>$admin_id</span>)->sellStatus(1)->where(<span>function</span>(<span>$query</span><span>){
</span><span>$query</span>->orWhereNull('stop_sell')->orWhere('stop_sell', '>=', \Carbon\Carbon::<span>now());
});;</span>
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SQL语句字段名是英文的并且带英文括号,查询出错?

select [COD(mg/L)] from huaxue
试试
 

在SQL2000建立表user level等自动加括号

user, level 被sqlserver认为是系统保留关键字,直接使用有可能在某些地方造成歧义。加上了中括号,不影响任何使用,但是在语句里,也应当加上括号,在代码里面,字段名是没有括号的。标准SQL语句也应当加上括号。比如:
SELECT [F1], [F2], [F3] FROM [MyTable] WHERE [F1] = @f1 AND [F2] = @f2

在C#代码里,比如DataTable,DataReader里面,需要使用字段名或者表名的时候,不需要使用括号。

比如一个DataTable tb;

tb.Rows[0][ "F1" ] 就可以了,而不需要 tb.Rows[0][ "[F1]" ]
 

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