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sqlalchemy flush() and get inserted id?
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Thanks for everybody. I solved my problem by modifying the column mapping. For me, autoincrement=True is required.
origin:
id = Column('ID', Integer, primary_key=True, nullable=False)
after modified:
id = Column('ID', Integer, primary_key=True, autoincrement=Tr...
How to efficiently build a tree from a flat structure?
... informal notation) O(3N), where as an O(1N) solution is easily achievable by either instantiating partial Nodes for non 'traversed' parents OR by keeping a secondary look-up tables for children of non-instantiated parents. Likely does not matter for most real-world uses, but it could be significant...
Patterns for handling batch operations in REST web services?
...ut that updating several attributes on a single resource is nicely covered by PATCH - no need for creativity in this case.
– LB2
Dec 2 '16 at 16:17
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SQLAlchemy ORDER BY DESCENDING?
How can I use ORDER BY descending in a SQLAlchemy query like the following?
6 Answers
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Get the latest record from mongodb collection
...wered Feb 2 '14 at 21:28
dark_rubydark_ruby
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PostgreSQL function for last inserted ID
...seless if you intend to get the last inserted id globally (not necessarily by your session). For this, you must resort to SELECT max(id) FROM table (of course, this will not read uncommitted inserts from other transactions).
Conversely, you should never use SELECT max(id) FROM table instead one of...
How to jQuery clone() and change id?
...r from that DIV's ID (i.e: 3 from "klon3")
// And increment that number by 1
var num = parseInt( $div.prop("id").match(/\d+/g), 10 ) +1;
// Clone it and assign the new ID (i.e: from num 4 to ID "klon4")
var $klon = $div.clone().prop('id', 'klon'+num );
// Finally insert $klon wher...
What's the difference between identifying and non-identifying relationships?
...child table with respect to States. But a row in Person is not identified by its state attribute. I.e. state is not part of the primary key of Person.
A non-identifying relationship can be optional or mandatory, which means the foreign key column allows NULL or disallows NULL, respectively.
S...
Order a MySQL table by two columns
How do I sort a MySQL table by two columns?
5 Answers
5
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PHP Session Fixation / Hijacking
...he session identifier of a session for a user. Typically in PHP it's done by giving them a url like http://www.example.com/index...?session_name=sessionid. Once the attacker gives the url to the client, the attack is the same as a session hijacking attack.
There are a few ways to prevent session f...