I went ahead and coded something up, inspired by Massimo's Preorder
Traversal example. I wouldn't be offended if people suggest how to make it
better/faster, perhaps by combining stuff in the Link function into one
query instead of many.
# Demonstrate closure tables. Deletion of nodes is left a
Why do you have to use this crutches (despite they are genius)? Now, even
Sqlite3 supports 'with recursive' queries.
And what do you mean under BOM and large tree? If we are talking about BOM
of real (physical) object like a car or even an aircraft carrier, I think
it is not large tree
only
I'm just trying to find a good solid way of doing the BOM pattern using the
DAL, and pretty much all of the decent articles I've found say the Closure
Table method is the best trade-off, especially for large-ish and deep-ish
BOM structures.
But, I'm not dogmatic. How would you code up a versio
On Wednesday, November 21, 2018 at 10:33:13 AM UTC-8, BigBaaadBob wrote:
>
> I'm just trying to find a good solid way of doing the BOM pattern using
> the DAL, and pretty much all of the decent articles I've found say the
> Closure Table method is the best trade-off, especially for large-ish an
The use case is manufacturing. Large complicated manufacturing with special
requirements. And SAP need not apply... :-)
On Wednesday, November 21, 2018 at 1:26:56 PM UTC-8, Dave S wrote:
>
>
>
> On Wednesday, November 21, 2018 at 10:33:13 AM UTC-8, BigBaaadBob wrote:
>>
>> I'm just trying to find
running example:
# fake table in which result of recursive select will be temporary stored
# id-values will be inherited from parent_child table
db.define_table('entry_collector',
Field('child', 'integer'),
Field('xpath', 'json'), # array of ids, xpath[0] == root,
xpath[-1] ==
What database are you using ?
In our e-file system, we have something similar with court cases, but we
use db functions to do the heavy lifting
for use, since in postgres they can be called with a select directly ...
*Ben Duncan*
DBA / Chief Software Architect
Mississippi State Supreme Court
El
It is sqlite3 example and it also uses db function...
I do not quite understand what confuses you
On Monday, November 26, 2018 at 3:47:29 PM UTC+3, Ben Duncan wrote:
>
> What database are you using ?
>
> In our e-file system, we have something similar with court cases, but we
> use db functions
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