查询以更新HeidiSql中表中的外键行

Question

In my heidiSql data base,I have ringee user table ..In that table i have ringee user id,user name,mobile number,imei code,is delete...Here ringee user id is primary key .I have another table called event table ... Here i have event id,ringee user id,event name,place...Here event id is Primary key and `ringee user id is foreign key...

What is my need is ,i need to update the ringee user id(foreign key) in event table when the ringee user id for that paricular id got changed... How to do this.What is query for that ..Please help me to find...

This is my event table query

CREATE TABLE `event` (
    `EVENT_ID` BIGINT(20) NOT NULL,
    `RINGEE_USER_ID` BIGINT(20) NOT NULL,
    `TEXT` VARCHAR(45) NOT NULL,
    `PLACE` VARCHAR(45) NOT NULL,
    `EVENT_DATE` DATETIME NOT NULL,
    `START_TIME` VARCHAR(10) NULL DEFAULT NULL,
    `END_TIME` VARCHAR(10) NULL DEFAULT NULL,
    `IS_DELETE` TINYINT(1) NULL DEFAULT '0',
    `CREATED_DTTM` TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP,
    `MODIFIED_DTTM` TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    PRIMARY KEY (`EVENT_ID`),
    INDEX `EVENT_ID` (`EVENT_ID`),
    INDEX `FK_EVENT_RINGEE_USER_ID` (`RINGEE_USER_ID`),
    CONSTRAINT `FK_EVENT_RINGEE_USER_ID` FOREIGN KEY (`RINGEE_USER_ID`) REFERENCES `ringee_user` (`RINGEE_USER_ID`) ON UPDATE NO ACTION ON DELETE NO ACTION
)
COLLATE='utf8_general_ci'
ENGINE=InnoDB;

Here i need to update the ringee user id..

Answer 1

try this CASCADE

(`RINGEE_USER_ID`) ON UPDATE CASCADE  ON DELETE NO ACTION

ex.

CREATE TABLE GROUP(
     group_id INT NOT NULL,
     group_name VARCHAR(50),
     PRIMARY KEY (group_id)
) ENGINE=INNODB;

CREATE TABLE USER (
     user_id INT, 
     user_name VARCHAR(50), 
     group_id INT,
     FOREIGN KEY (group_id) REFERENCES GROUP (group_id) ON UPDATE CASCADE ON DELETE NO ACTION
) ENGINE=INNODB;