Question

我有一个商店程序。此函数生成表和触发器，表已成功创建，但直到现在未成功创建触发器：|。

源代码：

DELIMITER $$

CREATE DEFINER=`root`@`localhost` PROCEDURE `insert_inventarisasi`(IN _id_bbws INT, IN _nama_lokasi VARCHAR(100), IN _id_das INT, IN _ws VARCHAR(100), IN _id_provinsi INT, IN _id_kota_kab INT, IN _lat FLOAT(10,6), IN _lng FLOAT(10,6), IN _tahun_bangun INT, IN _id_tipe INT, IN _id_merk INT, IN _nama_pengamat VARCHAR(256))
BEGIN
   DECLARE txn_error INTEGER DEFAULT 0;
   DECLARE CONTINUE HANDLER FOR SQLEXCEPTION BEGIN
               SET txn_error = 1;
   END;

   SET @tipealat = (SELECT nama_tipe FROM t_tipe WHERE id_tipe = _id_tipe);
   SET @icon = 'default';

   IF UPPER(@tipealat) LIKE CONCAT(UPPER('PDA'), '%') THEN
      SET @icon = 'pda';
   ELSEIF UPPER(@tipealat) LIKE CONCAT(UPPER('PCH'), '%') THEN
         SET @icon = 'pch';
   END IF;

   SAVEPOINT savepoint_pointer;  
   INSERT INTO `dhtml`.`t_inventarisasi`
    (`id_bbws`,`nama_lokasi`,`id_das`,`ws`,`id_provinsi`,`id_kota_kab`,`lat`,`lng`,`tahun_bangun`, `id_tipe`,`id_merk`,`nama_pengamat`, `icon`)
    VALUES
    (_id_bbws, _nama_lokasi, _id_das, _ws, _id_provinsi, _id_kota_kab, _lat, _lng, _tahun_bangun, _id_tipe, _id_merk, _nama_pengamat, @icon);
   IF txn_error = 1 THEN
      ROLLBACK TO savepoint_pointer;
      SELECT '<div class="alert alert-error"><button type="button" class="close" data-dismiss="alert">&times;</button><strong>Gagal!</strong> Input Data !</div>' AS hasil;  
   ELSE
      SELECT '<div class="alert alert-success"><button type="button" class="close" data-dismiss="alert">&times;</button><strong>Sukses!</strong> Input Data !</div>' AS hasil;  
      COMMIT;

       SET @sql = CONCAT('CREATE TABLE `lokasi`.`',_nama_lokasi,'` (
                                                                  `ReceivedDate` date NOT NULL,
                                                                  `ReceivedTime` time NOT NULL,
                                                                  `SamplingDate` date NOT NULL,
                                                                  `SamplingTime` time NOT NULL,
                                                                  `Rain` int(11) DEFAULT NULL,
                                                                  `WLevel` int(11) DEFAULT NULL,
                                                                  PRIMARY KEY (`ReceivedDate`,`ReceivedTime`,`SamplingDate`,`SamplingTime`)
                                                            ) ');
        PREPARE stmt FROM @sql;
        EXECUTE stmt;
        DEALLOCATE PREPARE stmt;

        SET @trigger = CONCAT('DELIMITER $$ 
                               USE `lokasi`$$ 
                               CREATE 
                               DEFINER=`root`@`localhost`
TRIGGER `lokasi`.`onINSERT_',_nama_lokasi,'`
AFTER INSERT ON `lokasi`.`',_nama_lokasi,'`
FOR EACH ROW
BEGIN  
  IF NEW.WLevel > 0 THEN
     SET @icon = \'pda\';
     SET @id_tipe = (SELECT id_tipe FROM `dhtml`.`t_tipe` WHERE UPPER(nama_tipe) LIKE UPPER(\'PDA%\') LIMIT 1);
     SET @id_inventarisasi = (SELECT id_inventarisasi FROM `dhtml`.`t_inventarisasi` WHERE UPPER(nama_lokasi) = UPPER(\'',_nama_lokasi,'\') LIMIT 1);
     IF NEW.ReceivedDate = CURDATE() THEN
        IF NEW.WLevel > 500 && NEW.WLevel < 1500 THEN
           SET @icon = \'normal\'; 
        ELSEIF NEW.WLevel > 1500 && NEW.WLevel < 2500 THEN  
           SET @icon = \'sedang\'; 
        ELSEIF NEW.WLevel > 2500 THEN  
           SET @icon = \'awas\';   
        END IF;            
     ELSE
        SET @10hari = (SELECT CURDATE() - INTERVAL 10 DAY);
        IF NEW.ReceivedDate <= @10hari THEN
           SET @icon = \'mati\'; 
        END IF;        

        SET @5hari = (SELECT CURDATE() - INTERVAL 5 DAY);
        IF NEW.ReceivedDate > @10hari AND NEW.ReceivedDate <= @5hari THEN
           SET @icon = \'tdkupdate\';  
        END IF;  
     END IF;
        UPDATE `dhtml`.`t_inventarisasi` SET icon = @icon WHERE id_inventarisasi = @id_inventarisasi AND id_tipe = @id_tipe;
     END IF;

END$$
');
        PREPARE stmt FROM @trigger;
        EXECUTE stmt;
        DEALLOCATE PREPARE stmt;
   END IF;  

END

有一些提示吗？

Answer 1

预准备语句目前不支持创建触发器。见13.5. SQL Syntax for Prepared Statements

Answer 2

选中此项：http://forums.mysql.com/read.php?98,588793,588793#msg-588793。 1.无法从准备好的声明中创建触发器 2.无法从存储过程创建触发器因此，拆分代码，您可以将创建触发器的部分放在PHP代码中。

MYSQL：如何从存储过程创建触发器

2 个答案: