This tag is specifically for PostgreSQL version 9.2

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0
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2answers
47 views

Can I Show Multiple “WHERE” Filtered Results In A Single Query/Output Table?

I am using Postgres 9.2.4 on Red Hat 6. Tables --------------------------------------- | Table 1 | --------------------------------------- | WorkflowID | DataSet | ...
2
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1answer
42 views

is it possible to run postgres with no WAL files being produced?

I am looking at a way of running a 9.2 postgres database on redhat 6 without any WAL files being produced. We have a end of day batch process which generates a large number of WAL files (and has ...
9
votes
2answers
103 views

How often will a FOR EACH STATEMENT trigger execute if the operation is caused by an FK constraint with UPDATE CASCADE?

I understand that a trigger on table t defined with FOR EACH STATEMENT will run once when I execute an UPDATE t .... Now, when t is defined with FOREIGN KEY ... REFERENCES a ... ON UPDATE CASCADE, ...
9
votes
1answer
489 views

Why is SELECT * much faster than selecting all columns (in a different column order) by name?

On a table with columns a,b,c,d,e,f,g,h,i,j,k I get: select * from misty order by a limit 25; Time: 302.068 ms And: select c,b,j,k,a,d,i,g,f,e,h from misty order by a limit 25; Time: 1258.451 ms ...
0
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0answers
26 views

Postgresql indexing for IS NULL

I have two similar queries, whose only difference (in the last two lines) is that one uses IS NULL while the other compares defined values. Query #1 takes only a few minutes: UPDATE ...
1
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1answer
45 views

missing WAL file on standby server following a backup

I seem to have an intermittent problem with my postgres backup/restore to standby Postgres, is version 9.2 running on red hat 6 enterprise i have a production server (PROD1) and a hot standby ...
1
vote
1answer
41 views

pg_ctl status responds with “available” during failed startup

I am using pg_ctl -D $PGDATA status to monitor whether my postgres standby database is up and running. Sometimes the database fails to start due to a missing WAL file, but its status is reported as ...
0
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1answer
89 views

Is there a timeout option for remote access to PostgreSQL database?

I'm working via pgAdmin III on a remote PostgreSQL database. After a not so long period (say 10-15 min.) without doing anything in pgAdmin, the connection automatically expires. I therefore have a ...
1
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1answer
136 views

Best way to drop / recreate a table that has dependent views?

Problem PostgreSQL does not have logical column reordering, at least not in 9.2 If columns need to be added in the middle of a large table and order is important, the best way is to drop and ...
0
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1answer
24 views

Migrating from 32 bit using pg_basebackup

Has anyone migrated a 32 bit postgres 9.2 database to a 64 bit postgres 9.2? I'm trying to use pg_basebackup but I'm not sure whether this is the right approach.
0
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1answer
76 views

Can't add a foreign key constraint in a table on Postgresql

I'm trying to add a foreign key of "prefectures" table in "centresdevote" table. But I'm having this error while trying to add a foreign key to "centresdevote" table. I had no problem adding foreign ...
1
vote
1answer
50 views

How to measure or estimate the streaming replication lag in Postgres 9.2

I've been asked to reverse engineer an app that uses postgresql in the back end. I can see that there is some database replica tion going on... based on my reading, I *think it's called streaming ...
0
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3answers
285 views

check key if exists in other table without fk constraint

Lets say i have: table a (id_a int); table b (id_b int, id_a int); I want to check if b.id_a exists in "a" before a new row in "b" will be inserted. Normally I would just add a fk constraint on ...
3
votes
1answer
118 views

Rollback on \include error in psql

I'm trying to execute an sql script file in a single transation. The file contains includes for some other scripts which in my example create some tables. It looks like this: \include ...
2
votes
1answer
30 views

Is it safe to use set-returning sql functions instead of security-barrier views?

Since 9.2, it's been possible to use the security_barrier attribute to guard against maliciously-chosen functions and operators accessing data 'hidden' behind filters in views (full info in the ...
1
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0answers
76 views

PostgreSQL Idle Session in Transactions with RELEASE_EXEC_SVP queries and lock

I am having a problem with having idle sessions in transactions. In pgAdmin Server Status, it is showing "RELEASE_EXEC_SVP_XXXXXX" (XXXXXX data are varied) as its query and it's locks also contain a ...
1
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2answers
326 views

How to calculate the cumulative difference between rows in Postgres?

I am in need of calculating the difference from the cumulative values for the previous day in Postgres based on session_id. Example as mentioned below: Date session_id upload_usage ...
0
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1answer
307 views

How to create a tablespace on Windows 7 for Postgresql 9.2?

I try to run this simple command: CREATE TABLESPACE tb_rec OWNER postgres LOCATION 'd:/tablespaces'; However, the tablespace is not created and I got this message: ERREUR: n'a pas pu ...
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0answers
182 views

How to enable implicit casts in PostgreSQL >=9.2?

Coming from this topic on SO a user suggest me to enable implicit casts in my PostgreSQL and I don't know how to do that. I also don't know if this is a good practice or if it's the solution to the ...
1
vote
1answer
93 views

EXECUTE within function not using index?

I have an accounts table with ~200k rows and an index for these columns: account_type_id BIGINT , member_id BIGINT , external_id VARCHAR(64) CREATE INDEX account_full_qualifiers_idx ON ...
1
vote
1answer
60 views

Slow Query with LIMIT

We have this query: SELECT "messages".* FROM "messages" WHERE "messages"."account_id" = 1 AND "messages"."status" = 'unread' AND (created_at >= '2014-04-24 01:00:00.000000') ORDER BY id DESC It ...
0
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2answers
39 views

Why Postgresql 9.2 word boundary not working!

In my postgresql version 9.1 this query is working fine: select id,name from flash_card_set where name ~* '\yACT\y' and matching: text ACT txt,ACT tests,tests ACT But in my postgresql version 9.2 ...
1
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1answer
343 views

PostgreSQL 9.3 Amazon RDS gives error while using UUID-OSSP extension for generating uuid

I have created DB instance on RDS and used below function it gaves error while with same postgreSQL version on local development machine works fine. create or replace function uuid() returns uuid as ...
1
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1answer
332 views

Problem with LISTEN - NOTIFY mechanism in PostgreSQL

I'm struggling with PostgreSQL LISTEN - NOTIFY mechanism. I open two consoles and connect to my database using psql client: psql -U postgres test_db In the first console I subscribe to some ...
0
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0answers
18 views

PostgreSQL-9.2 Error while restoring Database through Ant

I am using PostgreSQL-9.2 and I have created a function in one database . While restoring this database through ant ,Error is thrown from the function as syntax error at or near "VARCHAR" Where: ...
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0answers
33 views

Restore postgresql database from remote sql file

I would like to know if it's possible to restore a database from a remote sql file. The problem: - Working with PostgreSQL 9.2.4 - I have an small remote server with 10GB left in storage - I have a ...
2
votes
1answer
169 views

Diagnosing the error in a Postgresql to Redshift migration through psycopg2

I am running a job class that contains the following: A Postgresql connection that can issue SQL statements A Redshift connection that can do the same an S3 connection to function as an intermediary ...
0
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1answer
108 views

PostgreSQL replication with periodic log shipping

I'm using Windows Server 2008 R2 with 64-bit PostgreSQL 9.2 on both test machines. What I wish to achieve is that one server will be a master and other will be a slave. This is just for tests, finally ...
0
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0answers
58 views

Error while inserting values in array in Postgresql

I am writing a Postgresql function that saves some Ids information into the array and later on processing them one by one. I am new to postgresql and finding some difficulties to work with arrays ...
2
votes
1answer
222 views

pg_upgrade and tablespaces (postgres 9.2 to 9.3)

I have a 9.2 installed with tablespaces sitting at: /var/lib/postgresql/9.2/main and /opt/postgres/9.2/second And unfortunately they are on different filesystems. This is a Debian package ...
0
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1answer
80 views

Need some help with this query or some ideas for change it to better model

I've a dilemma in my application and I don't get how to solve it at DB level. The idea is that a user can be subscribed to one or more services but services are show depending on user type. This can ...
0
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1answer
78 views

PostgreSQL SQL syntax - JOIN and substrings

I have a single table of hostnames and NFS exports, some but not all of which are related. Example entries: HOST VOLUME ----- ---------- host1 vol1 host1 vol2 host1 ...
2
votes
1answer
132 views

How to determine if postgres database contains GiST indexes and what type?

Is there a way to easily check if a PostgreSQL database has any GiST indexes and of what type they are?
2
votes
1answer
272 views

Postgres Performance Over Group by with MAX and MIN

I just want to retrieve the data for specific location of customers with their ever first and last purchases made in the system. Table details : CREATE TABLE customer_location ( id UUID, location_id ...
0
votes
2answers
750 views

Auto increment char varying column prefixed with some characters

I have a table in PostgreSQL for hospital patients and I want to make a primary key for it as PAT0000001 (char varying) and to keep that field as auto-increment as well. Is there a way to achieve ...
1
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1answer
38 views

PostgreSQL 9.2 EBS Snapshot on AWS

I found this post here back from 2011, and wanted to verify that it's still valid and good advice to take a hot snapshot of an ebs volume (PostgreSQL still running) so long as you're snapping all of ...
0
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0answers
237 views

On Heroku in production, how can I copy database A to database B on command?

From my local terminal, I can use the following commands to do what I need to do: heroku pgbackups:capture --expire heroku pgbackups:restore charcoal --confirm max-kiosk However, I want to do this ...
0
votes
1answer
93 views

Creating unique constraint to be validated from input

I have this table name tbl with this table definition: create table tbl ( id serial primary key not null, counter integer not null default 1, ref_id integer not null, date_booked date ...
0
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0answers
110 views

How to increase the size of the tablespace in Postgresql?

I have created a tablespace in PostgreSQL with name abc and location of the tablespace is /opt/PostgreSQL/9.2/data/dbspace,Now i want to increase the size of the tablespace is it possible in ...
0
votes
1answer
112 views

PostgreSQL: After restoring data, unable to use Views (permission denied)

I'm attempting to get a PostgreSQL environment running locally. I'm using 9.2.8, and have restored data from a backup made by the DBA of the production environment. The restoration worked fine ...
1
vote
1answer
143 views

database not restoring from dump file

I'm running the following command to create a dump of all database on my production server: prodserver:/# pg_dumpall -U postgres -h 1.1.1.1 > prod.sql on my development box, I also take a ...
1
vote
2answers
602 views

Function execute query, manipulates result and then return the same result

I need a function that does something like this pseudocode: function get_data() RETURN SET OF something... as BEGIN myResultSet = select id, some_other_column from ...... limit 20000; update ...
1
vote
1answer
37 views

Limit balancing results by a column

I have a web crawler that have a table with tokens to crawl and each token have a fk_location column that is the website where that token must be processed. I also have a function that returns me the ...
4
votes
1answer
862 views

Could not open file “pg_clog/0000”: No such file or directory

My local PostgreSql 9.2 database won't start anymore this morning. I am on Windows 7. Yesterday, I performed a Windows Update before going to bed. I have checked the log and found: 2014-05-28 ...
0
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2answers
188 views

Get distinct results based on column and satisfy condition

I have the below select which is selecting from a table with the columns: id, project_id, keyword_id, position, Data example: i, p_id, k_id, p 1, 1, 1, 4 2, 1, 1, 5 3, 1, 1, 6 5, ...
2
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1answer
96 views

Postgresql AUTOVACUUM ANALYSE parameters for a specified table

I would like to set autovacuum parameters for a specified table. My problem is that AUTOVACUUM ANALYSE on a small table takes way to long to complete. This table has only 2 columns (including the ...
1
vote
1answer
677 views

Upgrading using pg_upgrade on windows fails

When upgrading from postgres 9.2 to 9.3 by following the upgrade procedure found in PostgreSQL 9.3.4 documentation about pg_upgrade, the following command fails: RUNAS /USER:postgres "CMD.EXE" ...
3
votes
2answers
333 views

PL/pgSQL fuction to find circular references

I have two tables ID Task 1 1 2 2 3 3 4 4 Col1 depend 2 3 2 4 3 1 4 2 ID and Col1 are related through FK constraint. I want to find out all circular references. Here ID ...
2
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1answer
378 views

Postgresql not using GIN trigram index when performing non-ASCII LIKE query?

Steps to reproduce Create database CREATE DATABASE citiesdb WITH OWNER = citiesowner ENCODING = 'UTF8' TABLESPACE = pg_default LC_COLLATE = 'C' LC_CTYPE = 'C' ...
1
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1answer
1k views

Migrating Postgres from 9.2 to 9.3

I have 2 CentOS servers, one is running PostgreSQL 9.2 and the other, 9.3. I'm trying to migrate the database but I'm getting 'relation does not exist' errors. What I did was on the 9.2 server: ...