SQlite Trigger Execution Problème

Question

Je suis nouveau sur Android & SQlite. J'essayais de créer le déclencheur suivant sur une base de données SQLite dans Android.

final String CREATE_TRIGGER_STATES = 
      "CREATE TRIGGER fk_insert_state BEFORE " 
      + "INSERT on tbl_states" 
      + "FOR EACH ROW " 
      + "BEGIN " 
      + "SELECT RAISE(ROLLBACK, 'insert on table " 
      + "\"tbl_states\" violates foreign key constraint " 
      + "\"fk_insert_state\"') WHERE (SELECT id FROM " 
      + "tbl_countries WHERE id = NEW.country_id) IS NULL; " 
      + "END;"; 
     db.execSQL(CREATE_TRIGGER_STATES); 

journal d'erreur:

android.database.sqlite.SQLiteException: near "EACH": syntax error: CREATE TRIGGER fk_insert_state BEFORE INSERT on tbl_statesFOR EACH ROW BEGIN SELECT RAISE(ROLLBACK, 'insert on table "tbl_states" violates foreign key constraint "fk_insert_state"') WHERE (SELECT id FROM tbl_countries WHERE id = NEW.country_id) IS NULL; END; 

est-il un problème avec la syntaxe?

Answer 1

Je devine que la partie pertinente du message d'erreur est ici:

... on tbl_statesFOR EACH ROW ... 
//--------------^^ 

vous manque un espace après tbl_states:

final String CREATE_TRIGGER_STATES = 
      "CREATE TRIGGER fk_insert_state BEFORE " 
      + "INSERT on tbl_states " // Missing space added 
      //... Continue on as before. 

Answer 2

Vous avez oublié un espace:

+ "INSERT on tbl_states " // Space missing here 
+ "FOR EACH ROW "