[英]Can not delete record from SQLite iPhone
在iPhone模擬器中運行此代碼時,無法從DB刪除記錄。 如果我在SQLite數據庫瀏覽器中運行此查詢,則效果很好。 這是我的代碼
SQLiteDB *sqliteConnect=[[SQLiteDB alloc] init];
sqlite3 *database;
if(sqlite3_open([sqliteConnect.databasePath UTF8String], &database)==SQLITE_OK)
{
sqlite3_stmt *compiledstatement;
const char *sqlstmt="delete from searchHistory where id = (select min(id) from searchHistory) ";
if(sqlite3_prepare_v2(database, sqlstmt, -1, &compiledstatement, NULL)==SQLITE_OK)
{
sqlite3_step(compiledstatement);
if(SQLITE_DONE != sqlite3_step(compiledstatement))
NSAssert1(0,@"Error while creating delete statement => %s",sqlite3_errmsg(database) );
}
NSLog(@"delete DONE");
sqlite3_finalize(compiledstatement);
}
sqlite3_close(database);
使用調試器運行時,出現以下錯誤=>
2011-04-08 08:42:34.049 MyApp[1838:20b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Error while creating delete statement => not an error'
SQLiteDB是我的類,其中包含init和checkAndCopyDB方法的邏輯。 我的數據庫被復制到文檔目錄中。 其他數據庫操作正常。 請幫我。 謝謝
您兩次調用sqlite3_step?
嘗試這個 :
{
int result = sqlite3_step(compiledstatement);
if(SQLITE_DONE != result)
NSAssert1(0,@"Error while creating delete statement => %s",sqlite3_errmsg(database) );
}
也許嘗試:
if(SQLITE_DONE != sqlite3_step(compiledstatement))
NSAssert1(0,@"Error while creating delete statement => %s",sqlite3_errmsg(database));
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