2014/10/15 下午 10:13:32

iphone Programming Glossary: rowid

how to get the message when receiving the “kCTMessageReceivedNotification” notification on IOS5

http://stackoverflow.com/questions/10681995/how-to-get-the-message-when-receiving-the-kctmessagereceivednotification-notif

iOS 4 and 5 may require different SQL as the .db format may change const char sql4 SELECT text from message ORDER BY rowid DESC TODO different for iOS 4. const char sql5 SELECT text from message ORDER BY rowid DESC NSString osVersion UIDevice.. text from message ORDER BY rowid DESC TODO different for iOS 4. const char sql5 SELECT text from message ORDER BY rowid DESC NSString osVersion UIDevice currentDevice systemVersion if osVersion hasPrefix @ 5 iOS 5. tested sqlite3_prepare_v2..

How to optimize Core Data query for full text search

http://stackoverflow.com/questions/1774369/how-to-optimize-core-data-query-for-full-text-search

to a different .sqlite file than the Core Data persistent store. When I import my data the Core Data object stores the rowid of the related FTS object as an integer attribute. I have a static dataset so I don't worry about referential integrity.. but the code to maintain integrity should be trivial. To perform FTS I MATCH query the FTS class returning a set of rowids. In my managed object class I query for the corresponding objects with NSPredicate predicateWithFormat @ rowid IN @ rowids.. set of rowids. In my managed object class I query for the corresponding objects with NSPredicate predicateWithFormat @ rowid IN @ rowids . I avoid traversing any many to many relationships this way. The performance improvement is dramatic. My dataset..

SQLlite3 Update statment has no effect

http://stackoverflow.com/questions/6622582/sqllite3-update-statment-has-no-effect

that is they were defined as INT or INT16 or INT32 etc. INTEGER PRIMARY KEY in mothership SQLite is an alias for the rowid. INT PRIMARY KEY in mothership SQLite is not an alias for the rowid. A consortium member or any implementor may or may not.. KEY in mothership SQLite is an alias for the rowid. INT PRIMARY KEY in mothership SQLite is not an alias for the rowid. A consortium member or any implementor may or may not follow this rule. SQLite is in the public domain of course. See section.. www.sqlite.org datatypes.html and see section on RowId and Primary Key here http www.sqlite.org lang_createtable.html#rowid A PRIMARY KEY column only becomes an integer primary key if the declared type name is exactly INTEGER . Other integer type..