Create a SQLite Database in Android with Foreign Keys?

Question

Is this supported? I'm attempting to create a table but am getting a syntax error when compiling.

private static final String ROOM_CREATE =
        "create table room (_id integer primary key autoincrement, " +
        "facility integer not null, FORIEGN KEY (facility) REFERENCES facility(_id));";

Answer 1

您可以创建外键，但是必须使用以下命令在SQLite中启用强制

PRAGMA foreign_keys = ON;

Answer 2

Typo in the SQL:

FORIEGN -> FOREIGN

Answer 3

Some great answers, particularly @sfratini for spotting the typo in the FOREIGN keyword. Can I also recommend that you should troubleshoot your SQL statements by using a command line client, such as the "Precompiled Binaries For Windows" (see http://sqlite.org/download.html ). That way, you can validate the CREATE TABLE and INSERT statements before you put them into your app.

Answer 4

The facility in facility(_id) must refers to table name. You are defining same name to column also. Please change table name and try again.