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How to create a MySQL hierarchical recursive query
...: use the recursive with syntax.
For MySQL 5.x: use inline variables, path IDs, or self-joins.
MySQL 8+
with recursive cte (id, name, parent_id) as (
select id,
name,
parent_id
from products
where parent_id = 19
union all
select p.id,
...
mongodb/mongoose findMany - find all documents with IDs listed in array
I have an array of _ids and I want to get all docs accordingly, what's the best way to do it ?
5 Answers
...
Bundle ID Suffix? What is it?
I'm new to the iPhone submission process. Apple asks for the Bundle ID Suffix. What is this? Not sure what to put here and what the significance of it is.
...
Multiple columns index when using the declarative ORM extension of sqlalchemy
...rue flag works normally:
class A(Base):
__tablename__ = 'table_A'
id = Column(Integer, primary_key=True)
a = Column(String(32), index=True)
b = Column(String(32), index=True)
if you'd like a composite index, again Table is present here as usual you just don't have to declare it, e...
Is there a way to cache GitHub credentials for pushing commits?
...still just enter the user name (https://user@github.com/...) which will at least save you half the hassle.
You might prefer to switch to SSH or to use the GitHub client software.
share
|
improve th...
How to use JavaScript variables in jQuery selectors?
...
var name = this.name;
$("input[name=" + name + "]").hide();
OR you can do something like this.
var id = this.id;
$('#' + id).hide();
OR you can give some effect also.
$("#" + this.id).slideUp();
If you want to remove the entire element permanently form the page.
$("#" ...
How to count the number of set bits in a 32-bit integer?
... although technically there is a separate feature bit for popcnt.)
But at least you get something portable that works everywhere, and with gcc/clang with the right target options, you get hardware popcount for architectures that support it.
#include <bitset>
#include <limits>
#include ...
Is there a performance impact when calling ToList()?
...occupy 4 bytes in .NET. Actually each reference of an object in .NET is at least 8 bytes long, so it's pretty slow. the first 4 bytes point to the type table & the second 4 bytes point to the value or memory location where to find the value
– user1416420
Ma...
Framework vs. Toolkit vs. Library [duplicate]
...n or environment which, itself was capable of running independently, or at least of carrying out it's tasks without any necessary client intervention after initial execution. Applications such as Databases, Word Processors and Windows systems would expose a fixed set of internal hooks or objects to ...
Select multiple records based on list of Id's with linq
I have a list containing Id's of my UserProfile table. How can i select all UserProfiles based on the list of Id's i got in a var using LINQ ?
...