All Questions
4 questions
2
votes
2
answers
2k
views
Postgres slow exists subquery
I have a queue system that has two tables, jobs and jobs_queues.
jobs is where we put jobs to run and job_queues we populate with queue names so that when we pick jobs we can discard those that are ...
2
votes
0
answers
94
views
Is it possible to replace count distinct inside Correlated sub-queries?
I'm trying to optimize the query bellow. The execution Plan is showing multiple sorting before aggregations (I think this is due to the count distincts in the correlated sub-queries)...
Is it ...
- 21
4
votes
2
answers
18k
views
conditional subquery
I have the following query:
SELECT id,
email,
first_name as "firstName",
last_name as "lastName",
is_active as "isActive",
password,
access,
CASE
WHEN access < 3 THEN (
...
4
votes
1
answer
6k
views
Postgres, levenshtein distance and nested queries
I have a DB Table with 3,000,000 rows or more like that:
|ID|T4|T16|T64|TL
where ID =INTEGER (PK)
and T4,T16,T64,TL are text fields. Each one is larger in length than the previous, i.e., LENGTH(T4)
...
- 1,012