저는 데이터베이스가 매우 새롭습니다.android.database.sqlite.SQLiteException : 구문 오류 : ALTER TABLE 데이터 추가 열 0 정수
테이블에 열을 추가하려고하는데 "94169"까지 "0", "1", "2"등의 열을 추가해야합니다.
05-04 10:12:50.656: E/An droidRuntime(2022): FATAL EXCEPTION: main
05-04 10:12:50.656: E/AndroidRuntime(2022): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.koday/com.example.koday.MainActivity}: android.database.sqlite.SQLiteException: near "0": syntax error: ALTER TABLE data ADD COLUMN 0 INTEGER
05-04 10:12:50.656: E/AndroidRuntime(2022): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
05-04 10:12:50.656: E/AndroidRuntime(2022): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
05-04 10:12:50.656: E/AndroidRuntime(2022): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-04 10:12:50.656: E/AndroidRuntime(2022): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
05-04 10:12:50.656: E/AndroidRuntime(2022): at android.os.Handler.dispatchMessage(Handler.java:99)
05-04 10:12:50.656: E/AndroidRuntime(2022): at android.os.Looper.loop(Looper.java:130)
05-04 10:12:50.656: E/AndroidRuntime(2022): at android.app.ActivityThread.main(ActivityThread.java:3683)
05-04 10:12:50.656: E/AndroidRuntime(2022): at java.lang.reflect.Method.invokeNative(Native Method)
05-04 10:12:50.656: E/AndroidRuntime(2022): at java.lang.reflect.Method.invoke(Method.java:507)
05-04 10:12:50.656: E/AndroidRuntime(2022): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
05-04 10:12:50.656: E/AndroidRuntime(2022): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
05-04 10:12:50.656: E/AndroidRuntime(2022): at dalvik.system.NativeStart.main(Native Method)
05-04 10:12:50.656: E/AndroidRuntime(2022): Caused by: android.database.sqlite.SQLiteException: near "0": syntax error: ALTER TABLE data ADD COLUMN 0 INTEGER
05-04 10:12:50.656: E/AndroidRuntime(2022): at android.database.sqlite.SQLiteDatabase.native_execSQL(Native Method)
05-04 10:12:50.656: E/AndroidRuntime(2022): at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1763)
05-04 10:12:50.656: E/AndroidRuntime(2022): at com.example.koday.DataBaseHelper.aggiungi(DataBaseHelper.java:186)
05-04 10:12:50.656: E/AndroidRuntime(2022): at com.example.koday.MainActivity.onCreate(MainActivity.java:61)
05-04 10:12:50.656: E/AndroidRuntime(2022): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-04 10:12:50.656: E/AndroidRuntime(2022): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
05-04 10:12:50.656: E/AndroidRuntime(2022): ... 11 more
이 오류의 원인 코드의 조각입니다 :
나는 다음과 같은 오류 얻을 식별자에
public void aggiungi() {
SQLiteDatabase db = this.getWritableDatabase();
for (int i = 0; i < 94170; i++) {
db.execSQL("ALTER TABLE data ADD COLUMN " +Integer.toString(i)+" INTEGER");
}
db.close();
return;
}
왜 테이블에 94,000 개의 열을 추가하나요? – tolgap
@tolgap 나쁜 생각, 실제로 94000이 허용되는 최대 cols를 초과 함 :-) –