我想创建3个名为curenttasks,originaltasks和prevoustasks的表。我制作一张桌子并复制到另外两张桌子。但是一个表无法创建,而另外两个表创建成功。
这三个表是:
DROP TABLE IF EXISTS `CurrentTasks`;
/*!40101 SET @saved_cs_client = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `CurrentTasks` (
`taskID` mediumint(9) NOT NULL AUTO_INCREMENT,
`taskName` varchar(255) NOT NULL,
`isActive` boolean DEFAULT TRUE,
`startDate` datetime NOT NULL,
`endDate` datetime NOT NULL,
`completeDate` datetime DEFAULT NULL,
`complexityID` smallint(6) NOT NULL,
`managerID` mediumint(9) NOT NULL,
`projectID` mediumint(9) NOT NULL,
`requirementName` varchar(255) NOT NULL,
`xPos` smallint(6) DEFAULT NULL,
`yPos` smallint(6) DEFAULT NULL,
`description` text NOT NULL,
`stageName` enum('Definition','Design','Development','Testing','Evaluation') NOT NULL DEFAULT 'Definition',
PRIMARY KEY (`taskID`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;
--
-- Dumping data for table `CurrentTasks`
--
LOCK TABLES `PreviousTasks` WRITE;
/*!40000 ALTER TABLE `PreviousTasks` DISABLE KEYS */;
/*!40000 ALTER TABLE `PreviousTasks` ENABLE KEYS */;
UNLOCK TABLES;
--
-- Table structure for table `PreviousTasks`
--
DROP TABLE IF EXISTS `PreviousTasks`;
/*!40101 SET @saved_cs_client = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `PreviousTasks` (
`taskID` mediumint(9) NOT NULL AUTO_INCREMENT,
`taskName` varchar(255) NOT NULL,
`isActive` boolean DEFAULT TRUE,
`startDate` datetime NOT NULL,
`endDate` datetime NOT NULL,
`completeDate` datetime DEFAULT NULL,
`complexityID` smallint(6) NOT NULL,
`managerID` mediumint(9) NOT NULL,
`projectID` mediumint(9) NOT NULL,
`requirementName` varchar(255) NOT NULL,
`xPos` smallint(6) DEFAULT NULL,
`yPos` smallint(6) DEFAULT NULL,
`description` text NOT NULL,
`stageName` enum('Definition','Design','Development','Testing','Evaluation') NOT NULL DEFAULT 'Definition',
PRIMARY KEY (`taskID`),
UNIQUE KEY `uniquePreviousTasks` (`requirementName`,`projectID`,`taskName`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;
--
-- Dumping data for table `PreviousTasks`
--
LOCK TABLES `PreviousTasks` WRITE;
/*!40000 ALTER TABLE `PreviousTasks` DISABLE KEYS */;
/*!40000 ALTER TABLE `PreviousTasks` ENABLE KEYS */;
UNLOCK TABLES;
--
-- Table structure for table `OriginalTasks`
--
DROP TABLE IF EXISTS `OriginalTasks`;
/*!40101 SET @saved_cs_client = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `OriginalTasks` (
`taskID` mediumint(9) NOT NULL AUTO_INCREMENT,
`taskName` varchar(255) NOT NULL,
`isActive` boolean DEFAULT TRUE,
`startDate` datetime NOT NULL,
`endDate` datetime NOT NULL,
`completeDate` datetime DEFAULT NULL,
`complexityID` smallint(6) NOT NULL,
`managerID` mediumint(9) NOT NULL,
`projectID` mediumint(9) NOT NULL,
`requirementName` varchar(255) NOT NULL,
`xPos` smallint(6) DEFAULT NULL,
`yPos` smallint(6) DEFAULT NULL,
`description` text NOT NULL,
`stageName` enum('Definition','Design','Development','Testing','Evaluation') NOT NULL DEFAULT 'Definition',
PRIMARY KEY (`taskID`),
UNIQUE KEY `uniqueOriginalTasks` (`requirementName`,`projectID`,`taskName`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;
--
-- Dumping data for table `OriginalTasks`
--
LOCK TABLES `OriginalTasks` WRITE;
/*!40000 ALTER TABLE `OriginalTasks` DISABLE KEYS */;
/*!40000 ALTER TABLE `OriginalTasks` ENABLE KEYS */;
UNLOCK TABLES;
当前任务无法复制,错误是:
ERROR 1005(HY000):无法创建表'rem.currenttasks'(错误号:150)
我非常困惑,因为我删除了currenttasks并将prevoustasks复制到它上面,用当前替换每个先前的,但它仍然无法工作。
答案 0 :(得分:0)
您忘记删除28-31之间的行。尚未创建PreviousTasks表,但这些行尝试更改表。第64-67行也存在同样的事情。