Question

假设我有3或4个表，其中一些表与父表连接。我想同时向这些表提交数据。

public void SetText(params int[] xs) { }

public class Impinj
{
    public class OctaneSdk
    {
        public class TagData { }
        public class ImpinjTimestamp { }
    }
}

public class ImpinjReader { }

public class TagReport : List<Tag> { }

public class Tag
{
    public ushort AntennaPortNumber;
    public Impinj.OctaneSdk.TagData Epc;
    public Impinj.OctaneSdk.ImpinjTimestamp LastSeenTime;
}

我的数据库SQL代码是

Table: table1
--------------------------------------------------------------------
| table1Id(AI)(PK) |  blah1 | blah2 | blah3 | blah3 | [....]
--------------------------------------------------------------------

Table: table2
--------------------------------------------------------------------
| table2Id(AI)(PK) | clah1 |  clah2 | clah3 | clah4 | [....] | table1Id (FK)
--------------------------------------------------------------------

Table: table3
--------------------------------------------------------------------
| table3Id(AI)(PK) | flah1 |  flah2 | flah3 | flah4 | [....] | table1Id (FK)
--------------------------------------------------------------------

SQL INSERT QUERY（已更新）：

CREATE TABLE IF NOT EXISTS `mydb`.`table1` (
  `table1Id` INT NULL AUTO_INCREMENT,
  `blah1` VARCHAR(45) NULL,
  `blah2` VARCHAR(45) NULL,
  `blah3` VARCHAR(45) NULL,
  `blah4` VARCHAR(45) NULL,
  PRIMARY KEY (`table1Id`))
ENGINE = InnoDB;

CREATE TABLE IF NOT EXISTS `mydb`.`table2` (
  `table2Id` INT NULL AUTO_INCREMENT,
  `clah1` VARCHAR(45) NULL,
  `clah2` VARCHAR(45) NULL,
  `clah3` VARCHAR(45) NULL,
  `clah4` VARCHAR(45) NULL,
  `table1Id` INT NULL,
  PRIMARY KEY (`table2Id`),
  INDEX `FK_table1_table2_idx` (`table1Id` ASC),
  CONSTRAINT `FK_table2_table1`
    FOREIGN KEY (`table1Id`)
    REFERENCES `mydb`.`table1` (`table1Id`)
    ON DELETE CASCADE
    ON UPDATE CASCADE)
ENGINE = InnoDB;

CREATE TABLE IF NOT EXISTS `mydb`.`table3` (
  `table3Id` INT NULL AUTO_INCREMENT,
  `flah1` VARCHAR(45) NULL,
  `flah2` VARCHAR(45) NULL,
  `flah3` VARCHAR(45) NULL,
  `flah4` VARCHAR(45) NULL,
  `table1Id` INT NULL,
  PRIMARY KEY (`table3Id`),
  INDEX `FK_table3_table1_idx` (`table1Id` ASC),
  CONSTRAINT `FK_table3_table1`
    FOREIGN KEY (`table1Id`)
    REFERENCES `mydb`.`table1` (`table1Id`)
    ON DELETE CASCADE
    ON UPDATE CASCADE)
ENGINE = InnoDB;

此查询显示错误：

1452 - 无法添加或更新子行：外键约束失败

但是如果只插入2个表就可以了

INSERT INTO table1 (table1Id, blah1, blah2, blah3, blah4, blah5)
     VALUES ('', NULL, NULL, NULL, NULL, NULL);

INSERT INTO table2 (clah1, clah2, clah3, clah4, clah5, table1Id)
     VALUES (NULL, NULL, NULL, NULL, NULL, LAST_INSERT_ID());

INSERT INTO table3 (flah1, flah2, flah3, flah4, flah5, table1Id)
     VALUES (NULL, NULL, NULL, NULL, NULL, LAST_INSERT_ID());

Answer 1

尝试

INSERT INTO table1 (table1Id, blah1, blah2, blah3, blah4, blah5)
     VALUES (101, NULL, NULL, NULL, NULL, NULL);

INSERT INTO table2 (clah1, clah2, clah3, clah4, clah5, table1Id)
     VALUES (NULL, NULL, NULL, NULL, NULL, 101);

INSERT INTO table3 (flah1, flah2, flah3, flah4, flah5, table1Id)
     VALUES (NULL, NULL, NULL, NULL, NULL, 101);

如何在多个连接表中插入数据

SQL INSERT QUERY（已更新）：

1 个答案: