I have installed the PostgreSQL9.2 and I need to use DBLink after searching through the internet, it is stated that the dblinke should be found under PostgreSQL\9.2\share\contrib. In my case the contrib folder is empty. How can I install the DBlink in Windows?
I managed to solve the problem by creating a folder dblink under the contrib folder and then I have copied the 3 files (dblink.control, dblink--1.0 and dblink--unpackaged--1.0) form share\extensions to the new folder share\contrib\dblink and after i run the CREATE EXTENSION dblink in each database that i need.
select ST.Table_Name, ST.Column_Name, DV.Table_Name, DV.Column_Name, * from information_schema.Columns ST full outer join dblink('dbname=otherdatabase','select Table_Name, Column_Name from information_schema.Columns') DV(Table_Name text, Column_Name text) on ST.Table_Name = DV.Table_name and ST.Column_Name = DV.Column_Name where ST.Column_Name is null or DV.Column_Name is NULL
Related
I am working with a script made for SQLite but I need to adapt it to a PostgreSQL database and this line is always returning an error:
PRAGMA table_info(table)
How can I get an equivalent result on postgres >
Found it !
SELECT *
FROM information_schema.columns
WHERE table_name = 'table_name'
I'm updating a Linux server with a new version of PostgreSql and I have an Error Message in phpPgAdmin when I browse a table.
The Ubuntu 18.04.3 LTS server running Apache 2.4.41, PHP 7.3.11 and when I update to PostgreSQL 12.0 and phpPgAdmin 7.12.0 the error occurs. With PostgreSQL 11.5 and phpPgAdmin 5.6 I didn't have this problem.
I expect to visualize the data stored in the table using phpPgAdmin, but the actual output is:
SQL error:
ERROR: column «relhasoids» does not exist
LINE 1: SELECT relhasoids FROM pg_catalog.pg_class WHERE relname='pr...
In statement:
SELECT relhasoids FROM pg_catalog.pg_class WHERE relname='product'
AND relnamespace = (SELECT oid FROM pg_catalog.pg_namespace WHERE nspname='public')
Editing the file /usr/share/phppgadmin/classes/database/Postgres.php and comment line 1045 to line 1054 the error disappears:
function hasObjectID($table) {
$c_schema = $this->_schema;
$this->clean($c_schema);
$this->clean($table);
/*
$sql = "SELECT relhasoids FROM pg_catalog.pg_class WHERE relname='{$table}'
AND relnamespace = (SELECT oid FROM pg_catalog.pg_namespace WHERE nspname='{$c_schema}')";
$rs = $this->selectSet($sql);
if ($rs->recordCount() != 1) return null;
else {
$rs->fields['relhasoids'] = $this->phpBool($rs->fields['relhasoids']);
return $rs->fields['relhasoids'];
} */
}
This column does not exist anymore, since you cannot create tables with OID any longer.
From the documentation:
WITH ( storage_parameter [= value] [, ... ] )
This clause specifies optional storage parameters for a table or index; see Storage Parameters for more information. For backward-compatibility the WITH clause for a table can also include OIDS=FALSE to specify that rows of the new table should not contain OIDs (object identifiers), OIDS=TRUE is not supported anymore.
WITHOUT OIDS
This is backward-compatible syntax for declaring a table WITHOUT OIDS, creating a table WITH OIDS is not supported anymore.
This is because phpPgAdmin is not compatible with PostgreSQL v. 12. PostgreSQL v. 12 has removed the relhasoids column because of the new way that OIDs are handled. As of the time of this post, pgPgAdmin does not support PostgreSQL v. 12 (it is not listed on the website). You may need to look into alternate clients.
See also How to fix “ERROR: column c.relhasoids does not exist” in Postgres?
I am attempting to install the AWS "Approved" PostgreSql Extension on our on large RDS instance but every time I at the point I attempt to 'create extension postgis_tiger_geocoder' I get this:
SQL Error [42883]: ERROR: function soundex(character varying) does not exist
I have spent a good bit of time reading the AWS / postgis / postgresql forums but unfortunately haven't found the writing on the wall.
Steps Taken
Installed the POSTGIS extension
create EXTENSION postgis;
Installed the FuzzyStrMatch Extension which contains the soundex function (verified)
create EXTENSION fuzzystrmatch;
Finally when I run this create extension I get the error above
create extension postgis_tiger_geocoder;
SQL Error [42883]: ERROR: function soundex(character varying) does not exist
Hint: No function matches the given name and argument types. You might need to add explicit type casts.
Position: 57558
org.postgresql.util.PSQLException: ERROR: function soundex(character varying) does not exist
Hint: No function matches the given name and argument types. You might need to add explicit type casts.
Position: 57558
Things I have tried:
set search_path = <schema_name>, public
Followed here:
Installing PostgreSQL Extension to all schemas
Dug deeply into postgis installation documentation
Read through RDS documentation on adding Extensions...
If anyone has had to deal with this frustration on AWS I will happily swap a few of the remaining hairs left on my head as I have not been able to work around this.
Results of \dx+
Objects in extension "fuzzystrmatch"
Object Description
--------------------------------------------------------------------------------
function <schema>.difference(...)
function <schema>.dmetaphone_alt(...)
function <schema>.dmetaphone(...)
function <schema>.levenshtein_less_equal(...)
function <schema>.levenshtein_less_equal(...)
function <schema>.levenshtein(...)
function <schema>.levenshtein(...)
function <schema>.metaphone(...)
function <schema>.soundex(...)
function <schema>.text_soundex(...)
(10 rows)
Results of \dfS+ soundex
List of functions
Schema | Name | Result data type | Argument data types | Type | Volatility | Owner | Security | Access privileges | Language | Source code | Description
--------+------+------------------+---------------------+------+------------+-------+----------+-------------------+----------+-------------+-------------
(0 rows)
Had the same problem, resolved it by altering search_path for database and reconnect before creating extension postgis_tiger_geocoder. Look for the FIX part :
-- Postgis Installation
------------------------------------------------------------------------------------------------------------------------------------------------
-- PostGIS AWS Configuration --
-- https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Appendix.PostgreSQL.CommonDBATasks.html#Appendix.PostgreSQL.CommonDBATasks.PostGIS --
------------------------------------------------------------------------------------------------------------------------------------------------
-- On postgis schema
SET SCHEMA '${POSTGIS_SCHEMA_NAME}';
-- Step 2: Load the PostGIS Extensions
create extension postgis;
create extension fuzzystrmatch;
-- FIX : To avoid "ERROR: function soundex(character varying) does not exist", change schema and reconnect
ALTER DATABASE ${DATABASE_NAME} SET search_path=${POSTGIS_SCHEMA_NAME};
\connect ${DATABASE_NAME};
-- End FIX
create extension postgis_tiger_geocoder;
create extension postgis_topology;
-- Step 3: Transfer Ownership of the Extensions to the rds_superuser Role
alter schema tiger owner to ${MASTER_USER};
alter schema tiger_data owner to ${MASTER_USER};
alter schema topology owner to ${MASTER_USER};
-- Step 4: Transfer Ownership of the Objects to the rds_superuser Role
CREATE FUNCTION exec(text) returns text language plpgsql volatile AS $f$ BEGIN EXECUTE $1; RETURN $1; END; $f$;
SELECT exec('ALTER TABLE ' || quote_ident(s.nspname) || '.' || quote_ident(s.relname) || ' OWNER TO ${MASTER_USER};')
FROM (
SELECT nspname, relname
FROM pg_class c JOIN pg_namespace n ON (c.relnamespace = n.oid)
WHERE nspname in ('tiger','topology') AND
relkind IN ('r','S','v') ORDER BY relkind = 'S')
s;
-- Adding postgis to default schema
ALTER DATABASE ${DATABASE_NAME} SET search_path=${SCHEMA_NAME},${POSTGIS_SCHEMA_NAME};
Had the same problem. Turns out that all the fuzzystrmatch's functions were created inside the wrong schema.
Connected with psql command line, I used the drop extension command to restart the process of creating the extensions:
drop extension postgis_topology;
drop extension postgis;
drop extension fuzzystrmatch;
Then, just to be sure, disconnected using \q.
Connected psql again.
Set the schema to public:
set schema 'public';
Then, follow the process described in AWS RDS Docs
create extension postgis;
create extension fuzzystrmatch;
create extension postgis_tiger_geocoder;
create extension postgis_topology;
I have a table named contacts
id | name
----+------------------
44 | Aarón
I am trying to execute a query :
select id,name from contacts where name ilike 'Aaro%';
It return (0 rows)
I am trying to search 'o' and also expect to have result include all accent of 'o' like 'ó'.
As I have did some googling and stackoverlfowing I have found that using locale I need to install the collation.
So I have installed the collation in linux by
sudo locale-gen --no-archive de_DE.utf-8
after that I have tried to install collation in the postgresql database.
create collation de (LOCALE='de_DE.utf-8');
collation generated successfully. I have tried to list out this collation by using select * from pg_collation; and it is there.
after doing all this I tried again to get result of all relative accent 'o' by query:
select id,name from contacts where name ilike 'Aaro%';
but again i got (0 rows)
Ultimatly I want the record "Aarón" when I execute above query.
Thanks in Advance.
You can use unaccent module of postgres.
for that you need to install postgresql-contrib in your system. you can install it using below command in debian based linux.
sudo apt-get install postgresql-contrib
after that you can create unaccent in postgres.
postgres_db=# create EXTENSION unaccent;
CREATE EXTENSION
postgres_db=# select name from test where unaccent(name) ilike 'Aaro%';
name
-------
Aarón
(1 row)
Hope this helps!
The extension unaccent is a good solution. If you deal with a small set of characters without ligatures you can alternatively use a simple function like this one for Polish:
create or replace function unaccent_pl(text)
returns text language sql immutable as $$
select translate($1, 'ąćęłńóśźżĄĆĘŁŃÓŚŹŻ', 'acelnoszzACELNOSZZ')
$$;
select unaccent_pl('Zażółć gęślą jaźń');
unaccent_pl
-------------------
Zazolc gesla jazn
(1 row)
I am running PostgreSQL 8.4.4 with Ubuntu 10.04.
I am trying to generate uuid but can't find a way to do it.
I do have the uuid-ossp.sql in /usr/share/postgresql/8.4/contrib/uuid-ossp.sql
When I try this is what I get :
postgres=# SELECT uuid_generate_v1();
ERROR: function uuid_generate_v1() does not exist
LINE 1: SELECT uuid_generate_v1();
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
Any idea ?
The stuff in contrib aren't run automatically. You have to run it yourself to install the functions. I don't know about the 8.4 version, but in the 8.3 version it appears to only install it per-database, so open up the database you're using in psql and issue the command \i /usr/share/postgresql/8.4/contrib/uuid-ossp.sql
I saw this in my PostgreSQL travels. It requires the pgcrypto contrib module.
CREATE OR REPLACE FUNCTION generate_uuid() RETURNS UUID AS
$$
SELECT ENCODE(GEN_RANDOM_BYTES(16), 'hex')::UUID
$$ LANGUAGE SQL IMMUTABLE;