Questions tagged [postgresql-9.4]
PostgreSQL version 9.4
501
questions
0
votes
0answers
28 views
Adding key value pair to nested jsonb array object in postgresql
I have two temp tables with my_data column as jsonb type. Table temp2 has actual data lets say
my_data = {"a": [
{
"b": "abc",
"c": "def",
"id": 1
},
{
"b": "efg",
"c": "ghi",
"id": 2
},
{...
2
votes
0answers
123 views
How do I fix multixact wraparound after it has already occurred?
I have a database which has a single table for which MultiXact wraparound has already occurred. Neither manual vacuums nor automatic vacuums are able to fix this condition.
Manual vacuums fail almost ...
1
vote
1answer
44 views
Does the Postgres 9.4.9 update fix MultiXactId “does no longer exist” in addition to “has not been created yet” errors?
Postgres 9.4.9 has a fix in it's release notes which reads (emphasis mine):
Prevent possible failure when vacuuming multixact IDs in an installation that has been pg_upgrade'd from pre-9.3 (Andrew ...
1
vote
1answer
80 views
Does postgres single-user mode use postgresql.conf settings?
Does running postgres in single-user mode (--single argument) cause postgres to start and use the settings present in the postgresql.conf file in the data directory defined by the -D option?
I am ...
0
votes
1answer
25 views
Postgres 9.4.5 small table grows into huge size - periodic VACUUM FULL needed
We are running a PostgreSQL database on Windows Server. The database version is 9.4.5 (it's been running stable for a long time now so we aren't updating it).
Some of our tables have millions of rows,...
0
votes
1answer
43 views
Postgres ignoring GIN index for LIKE query?
I am working in Postgres 9.4. I have a table and index like this:
Table "public.title"
Column | Type | ...
0
votes
0answers
81 views
How to start, stop, pause and resume a logical replication setup in PostgreSQL using PgLogical?
I have a publisher node on on-prem 9.4 and subscriber node on RDS version 10.6 and few tables are configured for replication. The current status is replicating. Now for my learning, I want to stop the ...
0
votes
0answers
445 views
Unit postgresql.service failed to load: No such file or directory
When i try to connect to my postgres database, i get the error below:
could not connect to server: Connection timed out (0x0000274C/10060) Is the server running on host "10.2.1.96" and accepting ...
0
votes
0answers
19 views
PostgreSQL Active Directory authentication logins contain a period
PostgreSQL newbie here. I am trying to set up a PostgreSQL server to integrate our active directory credentials. I can edit the pg_hba.conf file to allow users with an internal IP to connect with OS ...
0
votes
1answer
47 views
slow count queries - what are we doing wrong?
Using Postgresql 9.6.14, running the following query:
SELECT COUNT(*) AS "__count"
FROM "crm_client"
INNER JOIN "crm_role"
ON ("crm_client"."role_ptr_id" = "crm_role"."id")
INNER ...
0
votes
1answer
83 views
How to extract the grants on default roles of PostgreSQL 10: pg_read_all_settings, pg_read_all_stats, pg_monitor and pg_signal_backend?
I have a Postgres instance of version 10 running on AWS RDS. I have a user there with default roles granted to it. I want to create the same user on my sandbox where the instance is of version 9.4. ...
0
votes
1answer
145 views
Postgres - Vacuum doesn't complete on large/busy table
We have a decently active PG database hosted on AWS. We recently started getting notifications like the following:
Transaction ID age reached 750 million. Autovacuum parameter values for [...
0
votes
1answer
35 views
PostgreSQL Correlation Between “max_connections” and “numbackends”
I'm trying to figure out why the field numbackends in pg_stat_database never goes above 16 (and often stays the same even after a restart).
I have max_connections set to 100 and ...
1
vote
1answer
164 views
move postgresql 9.4 cluster to new server
I have a redmine postgresql folder backup (no dump) from postgresql 9.4
and want to move it to a new server with debian 10 (buster) with postgres 11.
On my debian buster server I tried to get this ...
0
votes
1answer
45 views
Comparing nullable column values using “IS NULL” versus “= NULL”
I'm dealing with nullable values in a column of a table, i'm wondering why this:
with cte as (
select 'c1'::text as c1,null::text as c2
union
select 'c2'::text as c1,null::text as c2
)
...
0
votes
3answers
103 views
How to SELECT “closest” rows from another table?
I have two tables, map1 and map2, there are multiple possible combinations between the columns map1.id1 and map2.id2.
I have tried the below query:
SELECT map1.id1, map2.id2, MIN(...
0
votes
1answer
32 views
Allow transparently altering View's underlying table
How to create a view that does not prevent altering its underlying table? There's a certain reason why I can't drop and re-create the view every time I need to change a column type or add a new column....
0
votes
0answers
131 views
Quering Postgresql digest function inside procedure works on pgadmin but not works by calling via Laravel
recently I have created stored procedure in Postgres Sql which deals about with hashing passwords. When used via PgAdmin tool it works like a charm as stated below.
I have also installed extension ...
0
votes
1answer
16 views
How to perform count(), count(distinct) in the same output using POSTGRESQL
I am trying to perform both count(distinct(keyword)) and count(keyword) from same tables. Here are the two queries.
Query-1
SELECT t1.count(distinct(keyword)) from keyword t1, sent t2,tweets t3,...
1
vote
0answers
59 views
Changing Postmaster File Name in PostgreSQL
I have two instances of PostgreSQL with master-slave replication between them and want to use GlusterFS. Everything works fine until the second instance wants to store the data in the GlusterFS. ...
0
votes
1answer
50 views
FUNCTION BEFORE TRIGGER INEXISTENT OPERATOR date > = double precision
In the 'pubblicazione' table I want to insert some fields of the tuple contained in the 'legge_approvata' table, but to do this the promulgation date must be in the same month and year as the date of ...
0
votes
1answer
92 views
How to make use of WITH in PostgreSQL to reduce query cost
I am trying to get twitter data of narendramodi using below command.
SELECT b.t_id,a.profile_image,b.tweet_text,e.media_media_url,b.retweet_count,b.favorite_count as like_count,count(...
0
votes
0answers
17 views
Performance considerations for a standalone server running Postgres 9.4 on 8 CPU core with 47GB RAM
I'm running:
Postgres 9.4
8 CPU cores
47GB RAM
shared_buffers = 13.8GB
work_mem = 32MB
The server gets its workload from 6 web application nodes which connect using JDBC connection pooling. Each web ...
0
votes
0answers
25 views
Is this a good way to move items on update to a different table?
So i have a table 'fruits', which has 2 stage deletion process with first being a soft deletion and the second being a hard deletion that deletes item at various times based on business rules.
This ...
0
votes
0answers
35 views
Unexpected Chunk Number 1(expected 2) for toast value in postgresql
Kindly assist and let me know how to sort this issue out. It would be greatly appreciated as this is in production
[24745]:ERROR: unexpected chunk number 1 (expected 2) for toast value
207293017 ...
0
votes
0answers
1k views
How to run multiple sql statements in Postgres using the tool PGADMIN?
I have 170 Alter Drop Constraint statement, 120 Truncate table, 120 Insert table and 170 Alter Add Constraint.
All of these should be run in one in one script as batch script and I'm using PGADMIN IV ...
2
votes
1answer
963 views
Use NEW in FROM clause in Postgres trigger?
I am trying to write a Postgres trigger to unnest an array field before inserting or updating a new row. E.g.
SELECT
unnest(something)
FROM NEW
However, this seems to lead to an error:
relation '...
2
votes
1answer
533 views
Streaming replication archive folder taking all space- Postgresql- 9.4
We had recently setup postgres streaming replication between master (physical, CentOS release 6.6) and slave(virtual, CentOS 7.6). We did the test and streaming replication is working fine.
We ...
1
vote
1answer
36 views
Regarding GIN Index in Postgresql
I am facing an issue that Even after creating a GIN INDEX execution plan is taking much time.
select email from customer where lower(email) like '%gmail';
CREATE INDEX idx1 ON customer USING gin (...
2
votes
3answers
81 views
Find all items where the 2 latest statuses meet condition
I have a table in a PostgreSQL database like this:
ID|Item-FK |timestamp|status
=============================
1 | 123 | ... | EXPIRED
2 | 123 | ... | PENDING
...
I want to query all ...
1
vote
0answers
659 views
postgres :: FATAL: could not access file “pglogical”: No such file or directory
We installed pglogical from source code, we are running PostgreSQL 9.4
make USE_PGXS=1 clean all
make USE_PGXS=1 install
Installation was successful after updating the parameters, we tried ...
1
vote
1answer
762 views
Streaming replication version between different minor versions
I want to know few details about streaming replication.
I want to setup streaming replication between version 9.4.4 and 9.4.20 ?
I have the master server in centos6.6 with postgres version 9.4.4 ...
1
vote
0answers
148 views
ERROR: relation “codepool_codepoolseq_seq” does not exist SQL state: 42P01
Below is my script but I keep getting an error.
-- Table: public.codepool
-- DROP TABLE public.codepool;
CREATE TABLE public.codepool
(
codepoolseq bigint NOT NULL DEFAULT nextval('...
0
votes
3answers
3k views
Downgrading PostgreSQL 10 to 9.4
Are there any particular precautions I should take when downgrading PG 10 to 9.4?
I have a database on Heroku (PG 9.4) which I'm going to upgrade to PG 10.6. In case something goes wrong, I want to ...
1
vote
2answers
155 views
How to dump multiple databases of the same cluster in single execution?
I have 100 databases in my cluster. I need to backup 30 databases (as single file or multiple file, anything is fine). I could do it for tables using pg_dump with -t.
Is there any way to do ...
0
votes
1answer
62 views
Streaming replication in postgres question
We have recently setup streaming replication in our Postgres server (t01, t02). t01 is master and t02 is the slave. I want to understand the below two issues:
Recently our /var directory of t01 ...
1
vote
1answer
38 views
Merge 2 columns and replace with specific output
The setup is a Debian 8 with Postgres 9.4 (64bit if that matters).
Given following table I want to "search" for a combination of columns first and column sub and replace their output with another ...
1
vote
0answers
15 views
Calculate percentages by using JOINS result in postgresql
I am trying to calculate percentages by joining 3 tables data to get the percentages of positive_count, negative_count, neutral_count of each user's tweets. I have succeeded in getting positive, ...
0
votes
2answers
39 views
Different results for logically same, but textually different queries
Is there any reason why the following queries would return different results?
select count(id)
from mytable
where
status='active'
and ((textfield1 ilike '%needle%') or (textfield2 ilike '%...
1
vote
1answer
52 views
Postgresql installation, avoid creating “postgres” user
I have a constraint, that I can use only one user on a SUSE Linux Enterprise Server 11.
Now, I need to install PostgreSQL 9.4. Is it possible to somehow avoid the automatic creation of "postgres" ...
0
votes
1answer
1k views
PgBouncer “no more connections allowed (max_client_conn)”
I am using PostgreSQL with PgBouncer, and receive the following error in my application:
08P01: no more connections allowed (max_client_conn)
pgbouncer.ini has the following configuration:
...
4
votes
1answer
1k views
Postgres 9.4 wal_level=logical increases disk space
I am trying to use the AWS Database Migration Service to migrate data from an RDS Postgres instance to an Aurora MySQL instance.
Database Migration Service requires the wal_level to be set as logical ...
4
votes
2answers
91 views
drop database command is cancelled ^C
I want to know what happens when a drop database command is canceled using ^C.
Does it partially removes the data or completely?
1
vote
1answer
68 views
How to get aggregate data from a dynamic number of related rows in adjacent table
EDIT: Unknowing of the rule that prohibits cross-posting, I also asked this on Stackoverflow and chose an answer over there. Since there's another (fully working) answer in this thread though, I won't ...
2
votes
1answer
249 views
How use cascade delete for array field in PostgreSQL?
How can i remove the value from array field?
I need to delete the user id from the university table's user_id array field if exists when i delete any users. so can i do this by using delete cascade ...
1
vote
1answer
103 views
Query Conflicts in Streaming Replication in Postgres 9.4
When using Streaming Replication in Postgres 9.4, when a query makes the standby Postgres "start to count" the max_standby_streaming_delay, changes being made in the primary:
Are dammed at the ...
3
votes
0answers
852 views
Why am I getting permission denied on an ownership change?
My current user is pronto
mediapop_staging=> select current_user;
current_user
--------------
pronto
(1 row)
This user a standard super user created on AWS RDS.
mediapop_staging=> \du ...
2
votes
1answer
52 views
How to use “WHERE” and also “WHERE NOT EXISTS” in the same query and table?
I am trying to add both WHERE and WHERE NOT EXISTS in same query. Below mentioned query1 is working fine, but it returns all the t1 data which does not belong to company1. So I tried query2, but no ...
-1
votes
1answer
2k views
Unpivot a table in PostgreSQL [duplicate]
I need to unpivot a table in PostgreSQL. The first dataset is what I have, the second is what I want:
Below is my schema with sample dataset:
http://www.sqlfiddle.com/#!17/3f45c/1
My understanding ...
0
votes
1answer
537 views
How to query inside jsonb column
I have a column type of jsonb named changes
THis is the structure of my column.
[["change","is_enabled",[false,true]]]
I want to query within the column.
I want to find all the rows that "...
