这是在android studio中执行crud操作时sql部分出现的错误

Question

2021-06-27 10:21:35.255 11487-11487/com.example.studentinfodb E/SQLiteLog: (1) no such column: rollno in "SELECT * FROM student WHERE rollno='1'"
2021-06-27 10:21:35.257 11487-11487/com.example.studentinfodb E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.studentinfodb, PID: 11487
android.database.sqlite.SQLiteException: no such column: rollno (code 1 SQLITE_ERROR): , while compiling: SELECT * FROM student WHERE rollno='1'
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:1045)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:652)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:590)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:61)
at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:46)
at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1545)
at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1484)
at com.example.studentinfodb.MainActivity.onClick(MainActivity.java:76)
at android.view.View.performClick(View.java:7448)
at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:1119)
at android.view.View.performClickInternal(View.java:7425)
at android.view.View.access$3600(View.java:810)
at android.view.View$PerformClick.run(View.java:28305)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)

Answer 1

请检查数据库。学生表中可能没有名为rollno的列。将列更改为正确的列，此问题应得到解决。

如果问题仍然存在，那么请共享整个代码块的代码，而不仅仅是错误。