Questions tagged [postgresql-9.5]
Specifically for PostgreSQL version 9.5
356
questions
0
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41
views
PostgreSQL 9.5 Create Publication?
Based on the official doc, CREATE PUBLICATION command is available on PostgreSQL 10 and later. However, I have a requirement to replicate PostgreSQL 9.5 to BigQuery using datastream, which require us ...
- 101
-1
votes
1
answer
140
views
How to upgrade from psql 9.5 to 12 with short downtime and no corruption
We have two databases in two different servers with PostgreSQL 9.5
One database size is 800GB and the other is 1.8 TB.
What would be the most efficient and safe way of upgrading both clusters from ...
- 1
0
votes
1
answer
84
views
Simplify duplicate INSERT commands placing NULL for values that are not found
I have many trigger functions written in PL/pgSQL that follow the below logic:
SELECT my_name
INTO l_my_name
FROM data
WHERE data.my_number = NEW.test_num;
IF NOT FOUND THEN
INSERT INTO test_event
...
1
vote
0
answers
835
views
Why this aggregate function cannot be converted with pg_upgrade from PostgreSQL 9.5 to PG 14.3?
I am trying to port old PostgreSQL v9.5 database (or family of databases) to PostgreSQL v14.3, with pg_upgrade utility.
After many hassles with old v9.5 binaries, source files (had to be recompiled to ...
- 23
1
vote
1
answer
104
views
Why is this simple query making up 50% execution time?
I'm using postgresql 9.5. I installed the pg_stat_statements extension to analyze queries and got the following surprising result:
scheduler=# SELECT substring(query, 1, 30) AS query, ...
- 133
0
votes
1
answer
43
views
Unable to locate and login to by PostgreSQL
I am using Ubuntu 20.04 LTS, and I have configured PostgreSQL 9.5 to work on the server. I am trying to log in but I have forgotten the password for the user postgres and therefore I tried to reset it ...
-4
votes
1
answer
153
views
SQL Server to PostgreSQL equivalent [closed]
I need some help in converting or equivalent of below in postgreSQL..
From MSSQL code to postgreSQL:-
CONVERT(bit,CASE WHEN column_a & 1 > 0 THEN 1 ELSE 0 END) as ABC
CONVERT(tinyint,CASE ...
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3
votes
1
answer
1k
views
List PostgreSQL extensions per database
I have a Postgres 9.5 server with 30 databases.
I would like to find out which database uses which extension(s) in one go, preferably in a query that is usable in pgAdmin.
I know that SELECT * FROM ...
- 131
0
votes
2
answers
1k
views
How to find values missing from a sequence?
I want to find rows missing from a sequence of values in my table. For example, in this picture documentno 'YD4BC2006008' is missing.
I want to find the missing lines via c_order_id and documentno.
I ...
0
votes
2
answers
51
views
Detect multiple valid date periods for same id, interleaved with non-valid periods
My table structure and some sample data (test table), as well as my desired output (results) are available here.
When I do
SELECT distinct colony, min(date_check), max(date_check)
from test
where ...
- 17
1
vote
2
answers
115
views
count distinct values over columns
I struggle to get the result for
here is my dataset
A
B
C
cnt
2
1
2
1
5
5
2
1
4
1
1
1
result expected
A
B
C
cnt
2
1
2
2
1
5
5
2
2
1
4
3
1
1
1
1
PG 9.5
- 17
0
votes
1
answer
984
views
how to call lo_unlink(lo) in batches
In Postgres 9.5 I am tying to reproduce the postgres tool vacuumlo to get rid of unreferenced large object to free disk space.
References are stored in text type columns by hibernate so using the tool ...
- 101
-1
votes
2
answers
932
views
Get distinct values for all columns for all tables from specific schema
I would like to get all distinct values for all columns in each table of a specific schema.
First, I summarised all my tables/columns in a new_table (myschema.dico)
CREATE TABLE myschema.dico AS (
...
- 17
2
votes
1
answer
763
views
Unused Indexes - PostgreSQL Database [closed]
I have used attached query to check unused indexes in my EDB9.5 DB. It's showing attached indexes are the unused indexes. Is it safe to drop below unused indexes?
SELECT
idstat.relname AS ...
- 31
2
votes
1
answer
176
views
Create cyclic pointers in postgresql 9.5
The problem is to write the "ADD-VALUE" request defined below.
For each "cat" value from the table below, keep only 3 records. Figure this table:
id
cat
value
updatedAt
1
cat1
v1
...
- 235
2
votes
2
answers
2k
views
Possible for two simple updates on the same table to deadlock?
Table A is:
id integer
version varchar
data jsonb (large data 1mb)
fkToBid integer (references B.id constraint)
Table B is:
id integer
other...
Processes are aggressively running the two updates ...
- 235
0
votes
1
answer
484
views
Postgres DB Timezone Change
Can You please guide us on how we can change the time zone of the Database to UTC which is migrated from AWS which was in time zone UTC? Now the Postgres 12 is installed in Ubuntu 20 which shows (show ...
0
votes
2
answers
554
views
PostgreSQL 9.5 database showing signs of corruption in logs, though clients work normally
We have a database server running PostgreSQL 9.5 on a Ubuntu 16.04 LTS box, with the total data size just under 30 GB.
We've set archive_mode to on, and archive_command is rsyncing WAL files to ...
- 135
0
votes
3
answers
267
views
Postgres Specific table access
We have a requirement in our Postgres Database, We want to give specific table permissions to a particular set of user, we also have airflow in our environment which syncs tables, but sometimes any ...
0
votes
1
answer
616
views
pg_upgrade from Postgres 9.5.5 to Postgres 12.3 errors out
I am trying to upgrade the database cluster from 9.5.5 to 12.3 using pg_upgrade.
I ran it with the --check option, and the result came back "clusters compatible", but when I run it with the -...
- 322
0
votes
1
answer
3k
views
Drop tables but space not claimed in postgres 12
I have upgraded Postgresql 9.5 to Postgresql 12.4 a few days back using pg_upgrade utility with link (-k) option.
So basically I am having two data directories i.e. One is old data directory (v9.5) ...
- 153
1
vote
3
answers
934
views
Postgres 12 drastically slower than postgres 9.5 with identical queries from import/export
I setup a new postgres database (v12) by export/importing from an old one (v9.5).
When I query the new one, it's drastically slower despite being on a more powerful machine. Shared buffers are set to ...
- 217
0
votes
1
answer
802
views
PostgreSQL: pg_upgrade 9.5 to 13 failing with "connection to database failed: FATAL: database "template1" does not exist"
I'm trying to upgrade a 9.5 server to 13 but the pg_upgrade process is failing after the main checks. Server is running CentOS 8 on EC2 and is using the pgdg repo installs of each server.
bash-4.4$ /...
- 261
1
vote
2
answers
658
views
Postgres Upgrade Issues with pg_upgrade
I am trying to upgrade 9.5.5 to 12.3 using pg_uprade, got the following error
Old and new pg_controldata maximum relation segment sizes are invalid or do not match
9.5.5
Blocks per segment of large ...
- 322
0
votes
1
answer
340
views
Performance issues when INSERTing in one table, but not another that has many more indexes
I have the following table DDLs (names changed):
(note the UUID PK)
CREATE TABLE myschema.item
(
item_id uuid NOT NULL DEFAULT uuid_generate_v4(),
ref_id uuid NOT NULL,
type_id uuid NOT ...
- 101
0
votes
1
answer
71
views
Problem Insert Data to connected tables postgresql
I have 2 existing tables: ‘projects’ and ‘units’.The two tables are connected through the project id. In the table 'projects' the column is called ‘id’ and generates every time a new project is ...
- 1
0
votes
0
answers
91
views
Poor performance in a SELECT using Inheritance
I will detail my problem in good detail. I have a marketplace application so I make a decision to make a multitenant per schema approach. I like this approach because of the isolation of data, but I'm ...
- 101
0
votes
1
answer
779
views
could not connect to server: can't connect postgres on the server to postico on my local
when I connect postgres on the server to postico on my local I get this error
could not connect to server: Operation timed out
Is the server running on host "http://159.65.65.203/" (92.242....
- 101
5
votes
2
answers
2k
views
How can I safely rename a sequence in PostgreSQL, ideally without downtime?
We want to rename some sequences in our production database for certain reasons.
Is there a way to do this safely in production without having to first close all connections to the database?
It's ...
- 197
0
votes
1
answer
883
views
Default Postgres privileges not showing on \ddp
As far as I understand there are set of default Postgres public privileges. I have created user and granted him privilege using:
CREATE USER foo WITH PASSWORD 'foo';
\connect bar;
GRANT SELECT ON ALL ...
0
votes
0
answers
33
views
Returning the column names used in Query
I am working with a tool that connects to PostgreSQL, which returns the result of a query in a multi-dimensional array, but, I need the name of the columns used in the query, is there any way to ...
- 121
0
votes
1
answer
5k
views
Postgresql: Permission denied to schema to user created based on master with rights
I'm trying to write a function that eventually will rotate users. Currently I have the code below which works and creates a new user using the prior user which ultimately has the same rights as the ...
- 111
1
vote
1
answer
3k
views
What does pg_stat_all_tables.idx_scan actually mean?
We have a busy PostgreSQL 9.5 server with OLTP-like traffic where pg_stat_all_tables.idx_scan values go up with considerate rate while we're having performance problems.
Does that (idx_scan ...
0
votes
1
answer
167
views
Gap Finding - Dates
Essentially i face a islands & gaps problem but unlike many of the examples i found i do not have a unique ID to group over to find my gaps.
Data is timestamp without timezone formatted and an ...
0
votes
0
answers
2k
views
Error: duplicate key value violates unique constraint, but the column does not have a unique constraint? postgreSQL
By the way, I'm trying to automate the below using python, but I've isolated the SQL code and tried it by itself on pgAdmin III, and it still doesn't work.
So I have a table called tableName, and I ...
1
vote
1
answer
1k
views
What does it mean when Postgres query state is null
What does it mean when a query state is null?
my_database_name> SELECT pid, datname, usename, application_name, query_start, state, state_change FROM pg_stat_activity;
+-------+------------------+-...
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0
votes
1
answer
122
views
Secure postgres 9.5 database packed on Windows desktop application
My desktop app includes a postgres database and a front app. I need the db to be accessed only by my front app. The credentials of this user are going to reside in the front app binaries.
I realized ...
- 101
6
votes
3
answers
16k
views
Postgresql query is very slow for my big table
My database version is postgresql 9.5.
create table if not exists request_log
(
id bigserial not null constraint app_requests_pkey primary key,
request_date timestamp not ...
- 161
1
vote
1
answer
1k
views
Improve Performance by Left Join and Group By Count - Postgresql
I am trying to write a query that does COUNT(*) on GROUP BY and a LEFT JOIN.
How do I improve the left join?
I am using the below index
create index session_opportunity_index on public.session ...
- 129
2
votes
1
answer
328
views
Postgres not using multicolumn index for queries on leftmost columns?
I'm working in Postgres 9.5.15 and have a table called project:
id | integer | | not null | nextval('project_id_seq'::regclass)
user_id ...
- 245
0
votes
0
answers
294
views
Insert the value of column in another column as jsonb
I'm trying to insert the value of one column as the value for another column of type jsonb, so this is what I currently have:
INSERT INTO "Customers" ("id", "priceList", "metadata")
SELECT
id,
...
0
votes
1
answer
61
views
how to take postgres server backup skipping some of databases?
I have PostgreSQL server version 9.5. Contains 20 Databases.
I want take server backup skipping of some 10 databases.
Am using pg_dumpall, but it was taking full server backup.
thanks,
- 3
0
votes
2
answers
54
views
SQL cannot add columns to query
I have the following query (PostgreSQL 9.5.19):
with userlist as (
select a.ips,
array_agg(t.super_user_id) as super_users
from tmp_table_1 t
left join unnest(t.ips) as a(ips) on ...
0
votes
1
answer
183
views
How to find out unused port on Linux server
We are trying to use port 5444 for our new PostgreSQL instance and we are not sure whether 5444 is used or unused.
Could you please help us to find the answers to the below questions.
We want to ...
- 1
0
votes
0
answers
43
views
Need Suggesion on PostgreSQL Database Minor upgrade Procedure from 9.5.15 to 9.5.19:
Thanks Alot each and every one.
Could you please help us to below points:
We are trying to deploy the latest postgres minor version 9.5.19.
We have deployed postgres server using yum repository.
...
- 1
2
votes
1
answer
1k
views
Can you import a Postgresql 9.5.10 db into a Postgresql 10.9 server?
I would like to know if it is safe to import a dump made from a database running on a PostgreSQL server 9.5.10 to a PostgreSQL server 10.9.
Basically I am able to do the import. It does not fail. But ...
-1
votes
1
answer
446
views
append the text to postgres crosstab query [closed]
Am using below crosstab query:
SELECT
*
from crosstab('SELECT id,task_id, status_id FROM table ORDER BY 1,2')
AS final_result(id character varying(50), task1 int,task2 int,task3 int,task4 ...
- 3
0
votes
0
answers
2k
views
pgBouncer exceeds connection limit even with idle connections
I'm using pgBouncer to balance connections in PostgreSQL.
Sets a limit of 2048 connections in the PostgreSQL main configuration and also in pgBouncer.
It happens that there are several connections ...
- 408
4
votes
2
answers
376
views
GIN index ignored when query has many (more than 18) OR statements
I have an issue where the execution is not using a GIN index when going over 18 OR statements.
This is my index:
CREATE INDEX emailjobs_externalreferences_gin
ON vsko_mailer_api_prod.emailjobs USING ...
- 143
0
votes
0
answers
233
views
DDL Logs In Postgresql.Conf File
I want to log only ddl commands to my postgresql .wal files. So, i configured my postgresql.conf file to log those sql queries but it did not work. It cathes every query that works on my postgresql ...
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