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我可以插入查询比娄代码更快:Android提高SQLite性能?
public void InsertFast2(List<Marketing_Points_B> values) {
String sql = "INSERT INTO " + tableName2 + " (Count, Date, Time, Lat, Lng, UserCode, LatLng) VALUES (?, ?, ?, ?, ?, ?, ?)";
SQLiteDatabase db = this.getWritableDatabase();
/*?*/db.execSQL("PRAGMA synchronous=OFF");
db.beginTransactionNonExclusive();
SQLiteStatement stmt = db.compileStatement(sql);
for (int i = 0; i < values.size(); i++) {
stmt.bindString(1, values.get(i).getCounts());
stmt.bindString(2, values.get(i).getDate());
stmt.bindString(3, values.get(i).getTime());
stmt.bindString(4, String.valueOf(values.get(i).getLat()));
stmt.bindString(5, String.valueOf(values.get(i).getLng()));
stmt.bindString(6, values.get(i).getUserCode());
stmt.bindString(7, String.valueOf(values.get(i).getmPosition()));
stmt.execute();
stmt.clearBindings();
}
db.setTransactionSuccessful();
db.endTransaction();
/*?*/db.execSQL("PRAGMA synchronous=NORMAL");
db.close();
}
,什么是(我可以从这些使用)?
db.execSQL("PRAGMA synchronous=OFF");
db.execSQL("PRAGMA synchronous=NORMAL");
非常感谢。 –