Trying To Extract Certain Records From Android Sql

问题

I am trying to extract only records that contain the field "movie" from MySql Android database. My code looks like this:

Class Name:MediaDbAdapter
Database table name: records
column name:KEY_TYPE

mDb.query(records, new String[] {MediaDbAdapter.KEY_TYPE},
            "KEY_TYPE = " + "'movie'",  null, null, null, null);

Just not working....

回答1:

mDb.query(records, new String[] {"KEY_TYPE"}, "KEY_TYPE = 'movie'", null, null, null, null);

try this

回答2:

db.query(TABLE_NAME, new String[] {"KEY_TYPE"}, 
            "KEY_TYPE = " + "'movie'", null, null, null, null);

来源：https://stackoverflow.com/questions/7162374/trying-to-extract-certain-records-from-android-sql