Laravel 5.1 如何创建带迁移的 MySQL 存储过程

Question

您好，我正在尝试使用 Laravel 5.1 迁移创建存储过程。到目前为止，我尝试使用 DB::connection()->getPdo()->exec()、DB::raw() 和 DB::unprepared()，但没有成功。我的代码如下所示：

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
use Wryttnapp\Models\User;


class AddCentroidFieldsToUsersTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        DB::connection()->getPdo()->exec("
            ALTER TABLE `users` 
            ADD COLUMN centroid POINT NULL 
            AFTER `avatar`;");

        DB::unprepared("SET @OLD_SQL_MODE=@@SQL_MODE;

            DELIMITER ;;

            DROP PROCEDURE IF EXISTS UPDATE_USER_CENTROID;;

            CREATE PROCEDURE UPDATE_USER_CENTROID(userId INT)
              NOT DETERMINISTIC
            BEGIN
              DECLARE bDone INT;

              DECLARE tempLatLon VARCHAR(100);
              DECLARE counter INT;
              DECLARE firstLatLon VARCHAR(100);
              DECLARE polygonDefinition TEXT;
              DECLARE geometry POINT;

              DECLARE curs CURSOR FOR SELECT DISTINCT CONCAT(`latitude`, ' ', `longitude`) FROM `user_locations` WHERE `user_id` = userId ORDER BY `id` ASC;
              DECLARE CONTINUE HANDLER FOR NOT FOUND SET bDone = 1;

              OPEN curs;

              SET bDone = 0;
              SET counter = 0;
              SET polygonDefinition = ',';
              FETCH curs INTO tempLatLon;

              WHILE NOT bDone DO
                SET polygonDefinition = CONCAT(polygonDefinition, ',', tempLatLon);

                IF counter = 0 THEN
                      SET firstLatLon = tempLatLon;
                END IF;
                SET counter = counter + 1;

                FETCH curs INTO tempLatLon;
              END WHILE;

              CLOSE curs;

              SET polygonDefinition = CONCAT(polygonDefinition, ',', firstLatLon);
              SET polygonDefinition = SUBSTRING(polygonDefinition, 3);
              SET polygonDefinition = CONCAT('POLYGON((', polygonDefinition, '))');

              SET geometry = ST_Centroid(ST_GeomFromText(polygonDefinition));

              UPDATE `users` SET centroid = geometry WHERE id = userId;
            END;;

            DELIMITER ;
            ");
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        DB::connection()->getPdo()->exec("
            ALTER TABLE `users` DROP COLUMN centroid;
            DROP INDEX centroid_index ON `users`;
            DROP FUNCTION IF EXISTS `UPDATE_USER_CENTROID`;");
    }
}

请帮忙！谢谢！

Answer 1

到目前为止，这就是我执行迁移过程的方式... 我相信我在设置分隔符时遇到了一些问题，所以我放弃了它们并为每个语句使用了不同的 unprepared()。

$procedure = "
    CREATE PROCEDURE `procedure_name`(procedure_param_1 TEXT, procedure_param_2 TEXT)
    BEGIN
         // Your SP here
    END
";

DB::unprepared("DROP procedure IF EXISTS procedure_name");
DB::unprepared($procedure);

这似乎是相关的：Laravel migration raw sql error

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laravel-5.1