All Questions
20 questions
2
votes
1
answer
79
views
Recursively sum child's nominal to parent, on dynamic level parent-child structure
i have data look like this :
i try to sum the Nominal column to each respective parent, so it will looks like this :
i provided the sql script for the data :
SET ANSI_NULLS ON
GO
SET ...
1
vote
1
answer
1k
views
How to find child and grandchildren tables of a main table by order
I have this script to return all child and grandchildren tables with their level from a database . How do I change this if I only want to return the child and grandchildren tables of a particular ...
- 67
0
votes
1
answer
43
views
Retreive upper heirarchy
I have Categories stored in a single table.
id name parentId path
A1 Cat 1 0 Cat 1
A2 Cat 2 A1 Cat 1 > Cat 2
A3 Cat 3 A2 Cat 1 > Cat 2 > Cat 3
...
- 103
0
votes
1
answer
278
views
Retrieve all linked categories
I have Categories stored in a single table.
Where there is no limit on number of childerns.
I want to fetch all the linked categories for the provided category id:
The reason for getting the hierarchy ...
- 103
1
vote
3
answers
226
views
Finding the Second (time) Interval within X of the current time
I have a need to find, for a given current second and upper and lower boundary, find all of the seconds that would fall within that, wrapping at the 59 second mark.
With that word salad out of the way,...
- 9,244
0
votes
0
answers
214
views
Mysql parent child to pivot table
I want to convert my parent child table to pivot,below is my query
CREATE TABLE parent_child
with recursive cte (id, name, parentid,level) as (
select id,
name,
...
6
votes
3
answers
1k
views
How can I calculate all grouping permutations of an input string in SQL?
Given an input like "ABC" generate a query that calculates all potential splits of 0 or more of the given string,
Desired output,
A B C
A BC
AB C
ABC
Given an input like "ABCD&...
- 64.6k
3
votes
2
answers
5k
views
Recursive query on a self-referential table where each node has one link to its child's node
Consider the following table and data (fiddle available here):
CREATE TABLE test
(
id INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY,
next_id INTEGER NOT NULL
);
INSERT INTO test (id, next_id) ...
- 163
0
votes
2
answers
4k
views
Postgresql split single row into multiple rows based on date [duplicate]
In my case, we have a table ABC with the supposed 1 row.
id
name
start_date
end_date
1
Rahul
01/01/2021
06/01/2021
but while retrieving I would like to get multiple rows where the start date is ...
- 115
4
votes
2
answers
8k
views
Get the highest parent id recursively in MySQL
I want to find the uppermost parent ID for each entry. For example,
CREATE TABLE t1
(
ID int(11) unsigned NOT NULL,
ParentID int(11) unsigned,
PRIMARY KEY (ID)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 ...
- 4,531
0
votes
0
answers
31
views
Fastest way of updating a spider web of data
I have a large table with over 60 million rows, which has relational data inside of it. I need to update each of these rows to the newest date, of the newest member, including members that that ...
- 1
0
votes
1
answer
36
views
Getting Indirect parents
I have following different tables
LeafChilds
ChildId, ChildName
1, Child1
2, Child2
Group
GroupId, GroupName
1, Group1
2, Group2
3, All
GroupChildMapping
GroupId, ChildId
1, 1
2, 1
2, 2
...
- 9
-1
votes
3
answers
3k
views
Is there really no SIMPLE way to achieve "recursive lookup" in PostgreSQL?
I have a table of categories:
id,label,parent_id
1,Animals,null
2,Dogs,1
3,Cats,1
4,Black,3
This means that "Animals" is a top-level category, and "Dogs" and "Cats" are ...
- 161
0
votes
1
answer
2k
views
Calculate products count based on category tree table
It is necessary to calculate how many products were created in each category, of course, that the products created in a child must be considered for the parent.
How can i do that SQL/Postgresql?
...
- 3
1
vote
1
answer
84
views
How can I create a recursive query over a column that has gaps?
I've adapted the recursive query from here in order to calculate ELO ratings (like in chess) from a list of game outcomes on-the-fly.
Given a table of games like:
id | home_player | away_player | ...
- 113
1
vote
0
answers
114
views
How to get all parents associated to a child, one row for each association [duplicate]
I have a table with two columns, Parent and Child.
i need to get an output list showing a child and all associated parents, one parent per row.
The youngest child will show as a child in rows equal ...
- 11
0
votes
1
answer
561
views
write SQL query that takes its own output as input
In a table that displays how trades are related to each other, starting from one trade, I want to find all other trades that relate to the first trade:
713613 PostPTETradeIDs 718478
713613 ...
- 101
6
votes
1
answer
666
views
Tree Node Calculation - SQL Server
I'd appreciate some help with something I am trying to achieve please.
The parts that my company make are built from sub assemblies and sub assemblies of sub assemblies.
This looks like:
...
- 63
4
votes
1
answer
2k
views
How to do hierarchical queries without CTE tables or recusive queries in Snowflake? (parent, child relationships)
I have several tables in Postgres that we are migrating to Snowflake. Some of these table are hierarchical (a foreign key point to the same table), normally to query this data I use CTE tables and/or ...
- 543
1
vote
1
answer
2k
views
How to select recursively in a child parent design situation (in MySQL)?
Let's take into consideration the following tables:
CREATE TABLE actions
(
id BIGINT(20) unsigned PRIMARY KEY NOT NULL AUTO_INCREMENT,
name VARCHAR(255) NOT NULL,
user_id BIGINT(20) ...
- 293