All Questions
7 questions
0
votes
1
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PostgreSQL CTE Recursion - How to Improve Performance for Parent->Child Tree (8 levels deep, 890 roots)
I am working on a query that performs PostgreSQL CTE Recursion in PostgreSQL 13. This query is intended to recurse from the root nodes to the deepest leaf node with certain properties (labeled 'begat'...
- 50
1
vote
1
answer
115
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PostgreSQL recursive query performance improvement
I'm building a database which is used to derive hierarchical relations for which I chose a PostgreSQL recursive CTE .
my table structure is
table_name |column_name |data_type ...
- 13
0
votes
0
answers
76
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Cleaner approach for Recursive CTE query
I have a table called entry_changes defined as follows:
Table "public.entry_changes"
Column | Type | ...
- 436
4
votes
1
answer
4k
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PostgresSQL recursive query running slow with low load and almost no data
I'm building a simple ACL system and the datastore is Postgres 9.6.
Permissions are assigned to groups, which can have subgroups, and people are assigned to groups.
I have a poor performing query ...
- 143
7
votes
2
answers
4k
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Looking for a simpler alternative to a recursive query
The actual query is more involved, but the problem I'm facing can be distilled to this:
A query to filter a rowset of monotonically increasing integers so that - in the final result set, row(n+1)....
- 71
6
votes
2
answers
4k
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Improve performance for order by with columns from many tables
Using PostgreSQL 8.4, I'm trying to consult two tables with 1 million records using order by with indexed columns of the two tables, and I'm losing performance (with 1 column takes 30 ms and with two ...
1
vote
1
answer
108
views
Finding the current prices for n Fuelstations at a certain point in time
I have a Table where price information is stored in with approx 13 million rows stored in a PostgreSQL 9.5 database.
CREATE TABLE public.de_tt_priceinfo (
id integer NOT NULL DEFAULT nextval('...
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