-2

当我尝试运行此脚本时出现此错误。我在调用它之前创建了这个函数，所以我不确定它为什么会返回它不存在的事实。

错误：

FUNCTION db.fn_distance_cosine 不存在[]

此外，相同的脚本在本地运行良好，但在另一台机器上遇到了这个问题。

想法？

谢谢！ 

<?php

$con = mysql_connect("localhost","username","password") or die ('Error connecting to mysql'); //remote
$db_selected = mysql_select_db('db', $con); //remote

if (!$db_selected) {
    die ('Can\'t use selected database : ' . mysql_error());
} 

$lat = $_GET["lat"];
$lon = $_GET["lon"];
$rows = array();

$establishFunction = mysql_query("DROP FUNCTION IF EXISTS fn_distance_cosine;
CREATE FUNCTION fn_distance_cosine (
    latitude_1 DOUBLE,
    longitude_1 DOUBLE,
    latitude_2 DOUBLE,
    longitude_2 DOUBLE
)
RETURNS DOUBLE
DETERMINISTIC
SQL SECURITY INVOKER
RETURN ACOS(
      SIN(RADIANS(latitude_1)) * SIN(RADIANS(latitude_2))
      + COS(RADIANS(latitude_1)) * COS(RADIANS(latitude_2))
      * COS(RADIANS(longitude_2 - longitude_1))
    ) * 3956.547;
");

mysql_query("SET @input_lat :=" . $lat . ";");
mysql_query("SET @input_lon :=" . $lon . ";");

mysql_query("SET @max_latitude := @input_lat + DEGREES(50.0/3956.547);");
mysql_query("SET @min_latitude := @input_lat - DEGREES(50.0/3956.547);");
mysql_query("SET @max_longitude := @input_lon + DEGREES(50.0/3956.547/COS(RADIANS(@input_lat)));");
mysql_query("SET @min_longitude := @input_lon - DEGREES(50.0/3956.547/COS(RADIANS(@input_lat)));");

if($result = mysql_query("SELECT
      *,
      fn_distance_cosine(lat, lon, @input_lat, @input_lon) AS distance_in_miles,
      COUNT(*) AS store_number_count
    FROM stores
    JOIN items_stores
    ON stores.store_number=items_stores.store_number
    WHERE `lat` BETWEEN @min_latitude AND @max_latitude
      AND `lon` BETWEEN @min_longitude AND @max_longitude
    GROUP BY stores.store_code
    HAVING store_code_count > 1
    ORDER BY distance_in_miles
    LIMIT 10;
    ")){  
        while ($r = mysql_fetch_assoc($result)){
        $rows[] = $r;
    }
}else{
    //failed.
    echo (mysql_error ());
}

print json_encode($rows);

mysql_close($con);

?>
4

1 回答 1

0

我的 db 用户没有存储过程的正确权限。

于 2012-09-20T20:59:54.183 回答