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我正在處理聯繫人列表應用程序我需要創建2個表，因爲我想進行連接。我試圖在我的數據庫中創建2個表格，但創建'創建視圖'時出現錯誤。「存在」附近的Sqlite故障
這是我得到的堆棧跟蹤：
01-04 21:24:32.132: E/Database(4183): Failure 1 (near "EXIST": syntax error) on 0x123c38 when preparing 'CREATE VIEW IF NOT EXIST ViewGroups AS SELECT contactTest1._id AS _id, contactTest1.name, contactTest1.phone, contactTest2.numegrup FROM contactTest1 JOIN contactTest2 ON contactTest1.idgrup =contactTest2._id'.
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): Couldn't open contacte.db for writing (will try read-only):
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): android.database.sqlite.SQLiteException: near "EXIST": syntax error: CREATE VIEW IF NOT EXIST ViewGroups AS SELECT contactTest1._id AS _id, contactTest1.name, contactTest1.phone, contactTest2.numegrup FROM contactTest1 JOIN contactTest2 ON contactTest1.idgrup =contactTest2._id
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.database.sqlite.SQLiteDatabase.native_execSQL(Native Method)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1727)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at org.example.dbcontactconsole.DbCreate.onCreate(DbCreate.java:42)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:106)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.database.sqlite.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:158)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at org.example.dbcontactconsole.DbContactConsole.getContacts(DbContactConsole.java:204)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at org.example.dbcontactconsole.DbContactConsole.showDatabaseContent(DbContactConsole.java:215)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at org.example.dbcontactconsole.DbContactConsole.onCreate(DbContactConsole.java:45)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.os.Handler.dispatchMessage(Handler.java:99)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.os.Looper.loop(Looper.java:123)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at android.app.ActivityThread.main(ActivityThread.java:4627)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at java.lang.reflect.Method.invokeNative(Native Method)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at java.lang.reflect.Method.invoke(Method.java:521)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
01-04 21:24:32.251: E/SQLiteOpenHelper(4183): at dalvik.system.NativeStart.main(Native Method)
下面是我創建的數據庫代碼：
public class DbCreate extends SQLiteOpenHelper{
private static final String DB_NAME = "contactsdataase.db";
private static final int DB_VERSION = 2;
/** Create a helper object for the Events database */
public DbCreate(Context context) {
super(context, DB_NAME, null,DB_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE " + DbConstants.TABLE_NUME + " " +
"(" + DbConstants.Group_ID + " INTEGER PRIMARY KEY , " +
DbConstants.GROUP_NAME+");");
db.execSQL("CREATE TABLE " + DbConstants.TABLE_NAME + " " +
"(" + _ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
DbConstants.NAME + " TEXT NOT NULL," +
DbConstants.PHONE + " TEXT NOT NULL," +
DbConstants.EMAIL + " TEXT NOT NULL," +
DbConstants.URL_STRING+ " TEXT NOT NULL,"+
DbConstants.ADRESS+ " TEXT NOT NULL,"+
DbConstants.Grupid+ "INTEGER NOT NULL ,FOREIGN KEY ("+DbConstants.Grupid+") REFERENCES "+DbConstants.TABLE_NUME+" ("+DbConstants.Group_ID+"));");
db.execSQL("CREATE TRIGGER fk_empdept_deptid " +
" BEFORE INSERT "+
" ON "+DbConstants.NAME+
" FOR EACH ROW BEGIN"+
" SELECT CASE WHEN ((SELECT "+DbConstants.Group_ID+" FROM "+DbConstants.TABLE_NUME+" WHERE "+DbConstants.Group_ID+"=new."+DbConstants.Grupid+") IS NULL)"+
" THEN RAISE (ABORT,'Foreign Key Violation') END;"+
db.execSQL("CREATE VIEW IF NOT EXIST "+viewEmps+
" AS SELECT "+employeeTable+"."+colID+" AS _id,"+
" "+employeeTable+"."+colName+","+
" "+employeeTable+"."+colAge+","+
" "+deptTable+"."+colDeptName+""+
" FROM "+employeeTable+" JOIN "+deptTable+
" ON "+employeeTable+"."+colDept+" ="+deptTable+"."+colDeptID
); " END;");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + DbConstants.TABLE_NUME);
db.execSQL("DROP TABLE IF EXISTS " + DbConstants.TABLE_NAME);
onCreate(db);
}
}