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What is the most efficient/elegant way to parse a flat table into a tree?
...ndant_id) VALUES
(1,1), (1,2), (1,4), (1,6),
(2,2), (2,4),
(3,3), (3,5),
(4,4),
(5,5),
(6,6);
Now you can get a tree starting at node 1 like this:
SELECT f.*
FROM FlatTable f
JOIN ClosureTable a ON (f.id = a.descendant_id)
WHERE a.ancestor_id = 1;
The output (in MySQL client) lo...
What is the __del__ method, How to call it?
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Find files containing a given text
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Andrew Schwartz
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answered May 27 '11 at 14:03
bear24rwbear24rw
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parseInt vs unary plus, when to use which?
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Genymotion, “Unable to load VirtualBox engine.” on Mavericks. VBox is setup correctly
...l way?
– Chris.Zou
Nov 14 '13 at 3:05
1
I had to restart VirtualBox and Genymotion after running ...
if else in a list comprehension [duplicate]
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544
>>> l = [22, 13, 45, 50, 98, 69, 43, 44, 1]
>>> [x+1 if x >= 45 else x+5 ...
generate days from date range
... union all select 2 union all select 3 union all select 4 union all select 5 union all select 6 union all select 7 union all select 8 union all select 9) as a
cross join (select 0 as a union all select 1 union all select 2 union all select 3 union all select 4 union all select 5 union all select...
Need to remove href values when printing in Chrome
...ething too.
– spasticninja
Oct 16 '15 at 17:02
Looks like HTML5 Boilerplate also does this! So I guess I have to overr...
Fixing JavaScript Array functions in Internet Explorer (indexOf, forEach, etc.) [closed]
... (Let me know if I've missed anything. ;-))
'use strict';
// Add ECMA262-5 method binding if not supported natively
//
if (!('bind' in Function.prototype)) {
Function.prototype.bind= function(owner) {
var that= this;
if (arguments.length<=1) {
return function() {...
convert_tz returns null
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BarmarBarmar
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