XCode 4 (final) seems to be inconsistent. Using one argument works on the device, but fails in the simulator: -com.apple.CoreData.SQLDebug 1 Using two arguments works on the device and in the simulator: -com.apple.CoreData.SQLDebug 1
I made an app recently that required this, targetting the same OS’s. You can use a combination of 2 databases : 1. LocalStorage :: Check for localStorage function supports_html5_storage() { try { return ‘localStorage’ in window && window[‘localStorage’] !== null; } catch (e) { return false; } } Set an item into LocalStorage localStorage.setItem(“bar”, foo); … Read more
You can do select max(id)+1 when you do the insertion. For example: INSERT INTO Log (id, rev_no, description) VALUES ((SELECT MAX(id) + 1 FROM log), ‘rev_Id’, ‘some description’) Note that this will fail on an empty table since there won’t be a record with id is 0 but you can either add a first dummy … Read more
Depending on the applications use, I would recommend using SQL Lite because it doesn’t require you to install any other software (SQL CE or Express, etc. usually would require a separate install). A list of the most important benefits for SQL Lite from the provider link at the bottom of this post: SQLite is a … Read more
You don’t need to use any comparison operator in order to compare a boolean value in your where clause. If your ‘boolean’ column is named is_selectable, your where clause would simply be: WHERE is_selectable
select quote(uid) from blobs returns: X’0123456789ABCDEF0123456789ABCDEF’ and if you really need it in lowercase, you can use: select lower(quote(uid)) from blobs
Information you need you can get from Table object: Ship.__table__.columns will provide you with columns information Ship.__table__.foreign_keys will list foreign keys Ship.__table__.constraints, Ship.__table__.indexes are other properties you might find useful
The column names do not matter at all, as long as data types match (or can be cast in the assignment). If the data types of the columns don’t match, try casting the values accordingly. Just try with small dummy tables. Be sure to list the target columns explicitly to avoid confusion. Like this: INSERT … Read more