我有以下方法:
public function getSpecialIncomings()
{
$countries = $this->getSpecialCountries();
$query = "SELECT id AS studentId,
gender_id AS genderId
FROM students AS student
WHERE student.incoming = 1
AND student.country_id IN
(
SELECT id FROM countries AS country";
if(count($countries) > 0)
{
$query .= " WHERE country.name = " . $countries[0] . " \r\n ";
for($i = 1; $i < count($countries); $i++)
{
$query .= " OR country.name = " . $countries[$i] . " \r\n ";
}
}
return DB::select(DB::raw($query));
}
public function getSpecialCountries()
{
return array("'China'", "'Korea'", "'Japan'", "'Jordan'", "'Taiwan'", "'Malaysia'");
}
如您所见,$query是使用数组中的元素构建的.
在Laravel中构建和运行查询时,我在“第12行”附近收到语法错误.
将查询从错误消息复制到phpmyadmin时,我得到了我需要的信息.
SELECT id AS studentId,
gender_id AS genderId
FROM students AS student
WHERE student.incoming = 1
AND student.country_id IN
(
SELECT id FROM countries AS country
WHERE country.name = 'China'
OR country.name = 'Korea'
OR country.name = 'Japan'
OR country.name = 'Jordan'
OR country.name = 'Taiwan'
OR country.name = 'Malaysia'
)
最佳答案 您在IN语句的末尾缺少右括号
if(count($countries) > 0)
{
$query .= " WHERE country.name = " . $countries[0] . "\r\n";
for($i = 1; $i < count($countries); $i++)
{
$query .= " OR country.name = " . $countries[$i] . "\r\n";
}
}
$query. = ")";