When I launch this I get the following error after db.CreateTable(); is executed: Cannot add a PRIMARY KEY column. What is going wrong here? I really would appreciate your help. Thank you very much. Greetings, FunkyPeanut I believe this is happening because you've changed the schema of ...
sqlite异常Cannot add a PRIMARY KEY column 张林-布莱恩特 | 初学一级 | 园豆:108 提问于:2019-11-04 11:47 < > 博客园社区特惠,阿里云新客6.5折上折 分享 您需要登录以后才能回答,未注册用户请先注册。 关于博客园联系我们商务合作©2004-2024博客园Powered by .NET on Kubernetes ...
AddColumn✔ AddForeignKey✔(重新构建) AddPrimaryKey✔(重新构建) AddUniqueConstraint✔(重新构建) AlterColumn✔(重新构建) CreateIndex✔ CreateTable✔ DropCheckConstraint✔(重新构建) DropColumn✔(重新构建) DropForeignKey✔(重新构建) ...
[Table("user")] public class User { // PrimaryKey is typically numeric [PrimaryKey, AutoIncrement, Column("_id")] public int Id { get; set; } [MaxLength(250), Unique] public string Username { get; set; } ... } 定義C# 類別之後,請呼叫 SQLiteConnection 類別上的 CreateTable 泛型方法...
3.2.0 from way back in 2005-03-21 added ALTER TABLE ADD COLUMN Note that there are still some edge cases where these may not work, e.g., you cannot drop a primary key column. See the documentation for more details. When these ALTER TABLE … COLUMN statements do not work, you can ...
values(3,null,null,'110222198912032547');#失败 ERROR...);#成功 insert into temp values(null,'李琦');#失败 ERROR 1048 (23000): Column 'id' cannot be null mysql>...ERROR 1452 (23000): Cannot add(添加) or update(修改) a child row(子表的记录): a foreign key constraint fails(...
("name", length=42)valtime=long("time").uniqueIndex()valremarks=text("remarks")overridevalprimaryKey=PrimaryKey(id) }funmain() {Database.connect("jdbc:sqlite:test.db", driver="org.sqlite.JDBC") transaction{ addLogger(StdOutSqlLogger)SchemaUtils.create(TestTable)SchemaUtils.createMissingTables...
Add another column to be used as the foreign key of type int `CREATE TABLE Frames ( ID INTEGER PRIMARY KEY AUTOINCREMENT , Designation TEXT(100), Description TEXT(250), Corners INTEGER, FrameType_ID INTEGER);` 7. Save the changes 8. Create a foreign key using the two ID's 9. Save ...
The DROP COLUMN, ALTER COLUMN, ADD CONSTRAINT are not supported. 4 Trigger support FOR EACH ROW triggers are supported but not FOR EACH STATEMENT triggers. 5 VIEWs VIEWs in SQLite are read-only. You may not execute a DELETE, INSERT, or UPDATE statement on a view. 6 GRANT and REVOKE ...
You should add a SquatLabel column to the data retrieving parameter in the db.query() method (and the same for the fetchNote method): publicCursorfetchAllNotes() {returnmDb.query(DATABASE_TABLE,newString[] {KEY_ROWID,KEY_TITLE,SQUAT_LABEL,WORKOUT_STATE},null,null,null,null,null); } ...