私はかなりの記事を見てきましたが、私の問題の解決策は見つかりませんでした。私の疑念は、エラーは私が2つの異なるテーブルで同じプライマリキーの列を参照するために単一の列を使用しようとしているからです。具体的には、bidテーブルには、bidderおよびitem_round_statusテーブルにも存在する外部キーsimulation_idがあります。入札テーブルはこれらのテーブルの両方の外部キーを参照していますが、テーブル内に1つのsimulation_idカラムのみを使用したいと考えています。これはエラー150の問題の原因ですか?エラーメッセージを表示するように更新mysqlエラー150が2つのテーブルの同じ外部キー列を参照しています
-- -----------------------------------------------------
-- Table `kffg_simulations`.`item_round_status`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `kffg_simulations`.`item_round_status` (
`simulation_id` INT NOT NULL ,
`round` INT NOT NULL ,
`clock_item_id` INT NOT NULL ,
`posted_price` BIGINT NOT NULL ,
`clock_price` BIGINT NOT NULL ,
PRIMARY KEY (`simulation_id`, `round`, `clock_item_id`) ,
INDEX `fk_item_round_status_clock_item1_idx` (`clock_item_id` ASC) ,
INDEX `fk_item_round_status_simulation1_idx` (`simulation_id` ASC) ,
CONSTRAINT `fk_item_round_status_clock_item1`
FOREIGN KEY (`clock_item_id`)
REFERENCES `kffg_simulations`.`clock_item` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_item_round_status_simulation1`
FOREIGN KEY (`simulation_id`)
REFERENCES `kffg_simulations`.`simulation` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `kffg_simulations`.`bidder`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `kffg_simulations`.`bidder` (
`simulation_id` INT NOT NULL ,
`idx` INT NOT NULL ,
`bidder_strategy_id` INT NOT NULL ,
`budget` BIGINT NOT NULL ,
PRIMARY KEY (`simulation_id`, `idx`) ,
INDEX `fk_bidder_simulation1_idx` (`simulation_id` ASC) ,
INDEX `fk_bidder_bidder_strategy1_idx` (`bidder_strategy_id` ASC) ,
CONSTRAINT `fk_bidder_simulation1`
FOREIGN KEY (`simulation_id`)
REFERENCES `kffg_simulations`.`simulation` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_bidder_bidder_strategy1`
FOREIGN KEY (`bidder_strategy_id`)
REFERENCES `kffg_simulations`.`bidder_strategy` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `kffg_simulations`.`bid_type`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `kffg_simulations`.`bid_type` (
`id` INT NOT NULL AUTO_INCREMENT ,
`name` VARCHAR(45) NOT NULL ,
PRIMARY KEY (`id`) )
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `kffg_simulations`.`bid_status`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `kffg_simulations`.`bid_status` (
`id` INT NOT NULL AUTO_INCREMENT ,
`description` VARCHAR(45) NOT NULL ,
PRIMARY KEY (`id`) )
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `kffg_simulations`.`bid`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `kffg_simulations`.`bid` (
`simulation_id` INT NOT NULL ,
`item_round_status_round` INT NOT NULL ,
`clock_item_id` INT NOT NULL ,
`bidder_idx` INT NOT NULL ,
`quantity` INT NOT NULL ,
`price` INT NOT NULL ,
`bid_type_id` INT NOT NULL ,
`switch_to_pea_category_id` INT NOT NULL ,
`backstop` BIGINT NULL ,
`bid_status_id` INT NOT NULL ,
`processed_demand` INT NOT NULL ,
PRIMARY KEY (`simulation_id`, `item_round_status_round`, `clock_item_id`, `bidder_idx`, `quantity`) ,
INDEX `fk_bid_item_round_status1_idx` (`simulation_id` ASC, `item_round_status_round` ASC, `clock_item_id` ASC) ,
INDEX `fk_bid_bidder1_idx` (`simulation_id` ASC, `bidder_idx` ASC) ,
INDEX `fk_bid_bid_type1_idx` (`bid_type_id` ASC) ,
INDEX `fk_bid_pea_category1_idx` (`switch_to_pea_category_id` ASC) ,
INDEX `fk_bid_bid_status1_idx` (`bid_status_id` ASC) ,
CONSTRAINT `fk_bid_item_round_status1`
FOREIGN KEY (`simulation_id` , `item_round_status_round` , `clock_item_id`)
REFERENCES `kffg_simulations`.`item_round_status` (`simulation_id` , `round` , `clock_item_id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_bid_bidder1`
FOREIGN KEY (`bidder_idx` , `simulation_id`)
REFERENCES `kffg_simulations`.`bidder` (`idx` , `simulation_id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_bid_bid_type1`
FOREIGN KEY (`bid_type_id`)
REFERENCES `kffg_simulations`.`bid_type` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_bid_pea_category1`
FOREIGN KEY (`switch_to_pea_category_id`)
REFERENCES `kffg_simulations`.`pea_category` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_bid_bid_status1`
FOREIGN KEY (`bid_status_id`)
REFERENCES `kffg_simulations`.`bid_status` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
:また、UMLダイアグラムで更新
------------------------
LATEST FOREIGN KEY ERROR
------------------------
170604 21:52:27 Error in foreign key constraint of table kffg_simulations/bid:
FOREIGN KEY (`simulation_id` , `item_round_status_round` , `clock_item_id`)
REFERENCES `kffg_simulations`.`item_round_status` (`simulation_id` , `round` , `clock_item_id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_bid_bidder1`
FOREIGN KEY (`bidder_idx` , `simulation_id`)
REFERENCES `kffg_simulations`.`bidder` (`idx` , `simulation_id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_bid_bid_type1`
FOREIGN KEY (`bid_type_id`)
REFERENCES `kffg_simulations`.`bid_type` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_bid_pea_category1`
FOREIGN KEY (`switch_to_pea_category_id`)
REFERENCES `kffg_simulations`.`pea_category` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_bid_bid_status1`
FOREIGN KEY (`bid_status_id`)
REFERENCES `kffg_simulations`.`bid_status` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB:
Cannot find an index in the referenced table where the
referenced columns appear as the first columns, or column types
in the table and the referenced table do not match for constraint.
Note that the internal storage type of ENUM and SET changed in
tables created with >= InnoDB-4.1.12, and such columns in old tables
cannot be referenced by such columns in new tables.
See http://dev.mysql.com/doc/refman/5.1/en/innodb-foreign-key-constraints.html
for correct foreign key definition.
正確なエラーメッセージのテキストは何ですか?また、[外部キーの使用とエラーの情報](https://dev.mysql.com/doc/refman/5.7/en/innodb-foreign-key-constraints.html)PS「何を使用したいのですか?表中の1つの「シミュレーションID」列は「平均? – philipxy
@philipxy「InnoDBは、外部キーで任意のインデックス列または列のグループを参照できますが、参照されるテーブルでは、参照される列が最初の列としてリストされるインデックスが必要です列は同じ順序で表示されます。入札テーブルの列がsimulation_id、round、item_id、bidder_idxの順番で並べられているという問題はありますか?間の列が問題を引き起こしますか? – german129