这是我的sql ..当我将它运行到 phpmyadmin 时，它运行正常。但是当我要以 DB：raw in laravel5.5 运行时，它会显示错误。在这里，奥克兰不是列名。
$ result = DB :: select（＆＃34;选择DISTINCT（SELECT count（id）FROM） commercial_lease LENGTH（CONCAT（地区，城市，＆＃34;奥克兰＆＃34;））= LENGTH（位置））作为listing_without_address，（SELECT count（id）FROM commercial_lease其中LENGTH（CONCAT（地区，城市，＆＃34;奥克兰＆＃34;））＆lt; LENGTH（location））作为listing_with_address，（SELECT count（id）FROM commercial_lease WHERE first_agent_name =＆＃39;无＆＃39;和 second_agent_name =＆＃39;无＆＃39;）作为来自commercial_lease＆＃34;）的private_listing;
答案 0 :(得分：0)
你正在混合报价。查询由双引号括起，对于Auckland，您试图再次将它们放在双引号中，这会发出错误。
要解决此问题，您可以使用\"Auckland\"或使用单引号'Auckland'转义字符串
$result = DB::select("select DISTINCT
(SELECT count(id) FROM commercial_lease where LENGTH(CONCAT(region,city,'Auckland')) = LENGTH(location) ) as listing_without_address ,
(SELECT count(id) FROM commercial_lease where LENGTH(CONCAT(region,city,\"Auckland\")) < LENGTH(location)) as listing_with_address ,
(SELECT count(id) FROM commercial_lease WHERE first_agent_name = 'None' and second_agent_name='None') as private_listing from commercial_lease");