SQLite3相同的.read文件在一个会话中有效,但在下一个会话中无效

如何解决SQLite3相同的.read文件在一个会话中有效,但在下一个会话中无效

我已经在从sqlite3终端运行的文件中准备了一个庞大的sql语句列表(INSERT调用)

.read tmp/commands.sql

当我在会话#1中一次或多次运行命令时,一切正常,没有错误,并且没有出现预期的结果,忽略将防止重复出现错误消息。

现在,如果我用.quit退出sqlite3,则立即返回并运行相同的命令.read tmp/commands.sql,对于我的commands.sql中的每个sql调用,我都会收到一条错误消息"Error: near line xxx: FOREIGN KEY constraint failed"

  • 我的数据库由两个具有关联关系的表组成
  • 在第二个表中定义了一个外键,以通过其唯一ID(FolderID)链接到第一个拳头。
  • 在sql脚本的开头,我以允许关系的形式添加了PRAGMA foreign_keys = true;

您能解释一下为什么在第二届会议上会发生这种情况吗?

谢谢


commands.sql文件中的第一次调用看起来像这样

PRAGMA foreign_keys = true;


/*
------------------------------------------------------------------
adding data in Folders for '0003_Runs/HiSeq2500/190921_7001450_0495_AH5JJ7BCX3
------------------------------------------------------------------
*/

INSERT OR IGNORE INTO Folders 
  (
  Creator,CreatorVersion,DBAddDate,FolderPath,FolderName,FolderSize,Protection,DeviceModel,StartDate,DeviceID,RunNr,FlowCellID,ProjectNR,Status,DeliveryDate,Comment
  )
VALUES (
  "AddIlluminaFolders2"," 1.0; 2020-09-11","1600864879","0003_Runs/HiSeq2500","190921_7001450_0495_AH5JJ7BCX3","183173644288","0","HiSeq2500","190921","7001450","0495","AH5JJ7BCX3","","done",""
  );

/*
------------------------------------------------------------------
adding data in Actions for 0003_Runs/HiSeq2500/190921_7001450_0495_AH5JJ7BCX3
------------------------------------------------------------------
*/

INSERT OR IGNORE INTO Actions 
  (
  FolderID,Creator,ActionDate,ActionName,Comment
  )
VALUES (
  last_insert_rowid(),"AddIlluminaFolders2",""
  );

-- ----------------------------------------------------------------

之后是许多其他同类块,直到文件结尾为PRAGMA foreign_keys = true;

database schema

这是我的完整表格定义

/*
 Database structure for NCDataMngr and BigData_viewer
 Author: Stéphane Plaisance - VIB-Nucleomics Core
 database version: 1.0 - 2020-09-11
 File Encoding         : utf-8
 REM: edit below if you change the database schema
 => INSERT INTO "version" (vnum,vdate) VALUES ("1.0","2020-09-11");
*/

PRAGMA foreign_keys = false;

-- ----------------------------
--  Table structure for Folders
-- ----------------------------
DROP TABLE IF EXISTS "Folders";
CREATE TABLE "Folders" (
     "FolderID" INTEGER NOT NULL PRIMARY KEY,"Creator" TEXT(255,0),"CreatorVersion" TEXT(255,"DBAddDate" TEXT(255,"FolderPath" TEXT(255,0) NOT NULL,"FolderName" TEXT(255,"FolderSize" INTEGER(20,"Protection" INTEGER(1,"DeviceModel" TEXT(255,"StartDate" TEXT(255,"DeviceID" TEXT(255,"RunNr" TEXT(255,"FlowCellID" TEXT(255,"ProjectNR" TEXT(255,"Status" TEXT(255,"DeliveryDate" TEXT(255,"Comment" TEXT(255,0)
);
INSERT INTO "main".sqlite_sequence (name,seq) VALUES ("Folders",'0');

-- ----------------------------
--  Table structure for Actions
-- ----------------------------
DROP TABLE IF EXISTS "Actions";
CREATE TABLE "Actions" (
     "FolderID" INTEGER NOT NULL,"ActionID" INTEGER NOT NULL PRIMARY KEY,"ActionDate" TEXT,"ActionName" TEXT(255,CONSTRAINT "Folders2Actions" FOREIGN KEY ("FolderID") REFERENCES "Folders" ("FolderID") ON DELETE CASCADE ON UPDATE CASCADE
);
INSERT INTO "main".sqlite_sequence (name,seq) VALUES ("Actions",'0');

-- ----------------------------
--  Table structure for version
-- ----------------------------
DROP TABLE IF EXISTS "version";
CREATE TABLE "version" (
     "vnum" text,"vdate" text
);
INSERT INTO "main".sqlite_sequence (name,seq) VALUES ("version",'0');
INSERT INTO "version" (vnum,vdate) VALUES ("1.1","2020-09-23");

-- ----------------------------
--  View structure for ActionView
-- ----------------------------
DROP VIEW IF EXISTS "ActionView";
CREATE VIEW "ActionView" AS SELECT
Actions.*,Folders.FolderName
FROM
Actions
INNER JOIN Folders ON Folders.FolderID = Actions.FolderID
ORDER BY
Actions.FolderID ASC,Actions.ActionID ASC;

-- ----------------------------
--  View structure for FolderView
-- ----------------------------
DROP VIEW IF EXISTS "FolderView";
CREATE VIEW "FolderView" AS SELECT
Folders.*
FROM
Folders
ORDER BY
Folders.FolderID ASC;

-- ----------------------------
--  Indexes structure for table Folders
-- ----------------------------
CREATE UNIQUE INDEX "idx_Folders_FolderPath_FolderName" on Folders ( "FolderPath","FolderName" );

-- ----------------------------
--  Indexes structure for table Actions
-- ----------------------------
CREATE INDEX "idx_Actions_FolderID" ON Actions ("FolderID" ASC);
CREATE UNIQUE INDEX "idx_Actions_FolderID_Creator" ON Actions ("FolderID" ASC,"Creator");

PRAGMA foreign_keys = true;

解决方法

last_insert_rowid()。当在同一会话中运行commands.sql多次时,last_insert_rowid()将插入最后一行的值。这将永远不会给外键失败。调用新会话时,不会插入任何行(由于“重复”),last_insert_rowid()的值为0,因此在插入Actions时违反FOREIGN KEY。

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