@Override public void onUpgrade(Database db, int oldVersion, int newVersion) { Log.i("greenDAO", "Upgrading schema from version " + oldVersion + " to " + newVersion + " by dropping all tables"); dropAllTables(db, true); // 删除---① onCreate(db); } }凡是...
也可以@Entity(generateConstructors = false) @Id private Long id; } @Entity public class Order { @Id private Long id; //@Id表示它是id主键,@Id(autoincrement = true)设置自增长 private Date date; @Property(nameInDb = "CUSTOMER_ID") private long customerId; }...
命令:copy tbl_pay_log_copy from '/home/gpadmin/ios_pay.txt' with delimiter ',' null '' LOG ERRORS INTO tbl_pay_log_copy_errs SEGMENT REJECT LIMIT 100; lottu=# copy tbl_pay_log_copy from '/home/gpadmin/ios_pay.txt' with delimiter ',' null '' LOG ERRORS INTO tbl_pay_log_copy...
Enzymatic single-drop microextraction for the assay of ethanol in alcohol-free cosmetics using microvolume fluorospectrometry detection. Analytica Chimica Acta 733: 28-33. https://doi.org/10.1016/j.aca.2012.04.039 Article CAS Google Scholar Campillo, N., A. Oller-Ruiz, M. Hernández-Córdoba ...
dropAllTables(SQLiteDatabase db,boolean ifExists){StudentDao.dropTable(db,ifExists);}publicstaticabstractclassOpenHelperextendsSQLiteOpenHelper{publicOpenHelper(Context context,String name,CursorFactory factory){super(context,name,factory,SCHEMA_VERSION);}@OverridepublicvoidonCreate(SQLiteDatabase db){Log.i...
The problem ZHA just stopped working. Noticed because lights one by one went offline. Stuggling even to identify correct error message. After reload could not bring it back. Restoring backups not helping (both HA Cora/radio) I'm using ho...
Shop 'til you drop in Jiaosi Evergreen Resort Hotel Jiaosi is surrounded by a plethora of shopping landmarks that will satisfy even the most avid shopaholics. Just a short distance away, you'll find the Mary Leu Fine Art Carving Gallery, where you can admire and purchase intricately carved...
The Department of State’s National Visa Center (NVC) saw a decrease in the green card backlog, from 351,624 in April to 337,307 in May — a 4% drop. The number of green card applicants whose cases were documentarily complete and ready to be scheduled for an interview decreased, from...
Log.i("greenDAO", "Upgrading schema from version " + oldVersion + " to " + newVersion + " by dropping all tables"); dropAllTables(db, true); onCreate(db); } 1. 2. 3. 4. 5. 6. 但是我们升级数据库的同时并不想删除我们数据库里面已有的数据,因此数据库的升级我们需要新建一个类继承...