我有两个表,表(文件)和表(哈希)我想创建一个插入新(文件)的过程,如果不存在则添加(哈希),然后在(文件)中插入(ID) )表,如果存在选择(ID)并插入它,我也必须使用(在插入文件触发器之前),但它或者给我一个CONSTRAINT错误或插入哈希并且没有插入文件。
CREATE TABLE `Hashes` (
`ID` int(255) unsigned NOT NULL AUTO_INCREMENT,
`Hash` varchar(255) NOT NULL,
`Counter` int(255) NOT NULL DEFAULT '1',
PRIMARY KEY (`ID`),
UNIQUE KEY `Hash` (`Hash`)
)
和
CREATE TABLE `Files` (
`ID` int(255) unsigned NOT NULL AUTO_INCREMENT,
`Name` varchar(255) NOT NULL,
`ParentPath` varchar(255) DEFAULT NULL,
`Size` double NOT NULL,
`Date` date NOT NULL,
`ParentID` int(255) unsigned NOT NULL DEFAULT '0',
`HashID` int(255) unsigned DEFAULT NULL,
PRIMARY KEY (`ID`),
KEY `fk_Hash_ID` (`HashID`),
CONSTRAINT `fk_Hash_ID` FOREIGN KEY (`HashID`) REFERENCES `hashes` (`ID`)
)
////////
CREATE PROCEDURE SP_Files_Insert
(
parmName VARCHAR(255),
parmParentPath VARCHAR(255),
parmSize DOUBLE,
parmDate DATE,
parmParentID INTEGER,
parmHash VARCHAR(255)
)
BEGIN
INSERT INTO Files( Name, ParentPath, Size, Date, ParentID, HashID)
VALUES(parmName, parmParentPath, parmSize, parmDate, parmParentID, LAST_INSERT_ID());
END;
////////////
CREATE TRIGGER TR_Insert_File BEFORE INSERT ON Files
FOR EACH ROW
BEGIN
INSERT INTO Hash( Hash, Counter)
VALUE( parmHash, 1)
ON DUPLICATE KEY UPDATE ID = LAST_INSERT_ID(ID), Counter = Counter + 1;
END;
答案 0 :(得分:0)
在你的触发器中使用分隔符,如下所示
delimiter \\
CREATE TRIGGER TR_Insert_File BEFORE INSERT ON Files
FOR EACH ROW
BEGIN
INSERT INTO Hash( Hash, Counter)
VALUE( parmHash, 1)
ON DUPLICATE KEY UPDATE ID = LAST_INSERT_ID(ID), Counter = Counter + 1;
END\\
delimiter ;