This question already has answers here:
I keep getting the error "relation [TABLE] does not exist"
(1 answer)
Cannot simply use PostgreSQL table name ("relation does not exist")
(18 answers)
Setting schema in PostgreSQL JDBC doesn't seem to work
(1 answer)
Closed 4 years ago.
Using PostgreSQL 9.6, I created new table using pgAdmin under public schema.
But to access the table, I can't use just the table name. If I use public."Book" then only the table is accessible.
thrillio=# show search_path;
search_path
-------------
public
(1 row)
\d+ shows all the tables..
thrillio=# \d+
List of relations
Schema | Name | Type | Owner | Size | Description
--------+-------------------+-------+----------+------------+-------------
public | Book | table | postgres | 8192 bytes |
public | KidFriendlyStatus | table | postgres | 0 bytes |
public | Movie | table | postgres | 8192 bytes |
public | User | table | postgres | 8192 bytes |
public | Weblink | table | postgres | 8192 bytes |
(5 rows)
thrillio=# select * from Book;
ERROR: relation "book" does not exist
LINE 1: select * from Book;
^
thrillio=# select * from public."Book";
id | title | profileUrl | publicationYear | publisher | authors | genre | amazonRating
----+-------+------------+-----------------+-----------+---------+-------+--------------
(0 rows)
is this expected? Anything I need to change the search_path to fix this?
Related
I'm running at now DMS (FULL LOAD, ONGOING REPLICATION) replication and I would like to check difference of rows between clusters A and B. and How B is delayed against A.
Database engine is postgresql 11(A) and postgresql14(B)
I run \dt+ on A:
List of relations
Schema | Name | Type | Owner | Persistence | Size | Description
--------+----------+-------+--------+-------------+-------+-------------
public | x | table | example | permanent | 73 GB |
(1 row)
and on B:
List of relations
Schema | Name | Type | Owner | Persistence | Access method | Size | Description
--------+----------+-------+--------+-------------+---------------+-------+-------------
public | x | table | example | permanent | heap | 14 GB |
I was surprised by the difference in size, which is huge, so I run the count on reader instance of this clusters:
reader A:
=> Select count(*) FROM X;
count
----------
47830564
(1 row)
reader B:
=> Select count(*) FROM X;
count
----------
47830564
(1 row)
And looks okay, but I don't understand why the difference in size is so big.
DMS is an aws service which is reinserting the rows in batches from A to B.
In postgres while listing the relation with \dt+ new columns 'size' and 'Description' column are added. As the name suggests Description can we use to store the description of the table, if yes how?
# \dt
List of relations
Schema | Name | Type | Owner
--------+---------+-------+-------
drs | Records | table | rho
drs | Reports | table | rho
(2 rows)
# \dt+
List of relations
Schema | Name | Type | Owner | Size | Description
--------+---------+-------+-------+------------+-------------
drs | Records | table | rho | 8192 bytes |
drs | Reports | table | rho | 0 bytes |
(2 rows)
This can be defined using the comment statement:
comment on table drs."Reports" is 'This table stores reports';
I'm trying to set up postgREST. Have been following the tutorial at http://postgrest.org/en/v5.1/tutorials/tut0.html. Here is what I see. First, the schemas:
entercarlson=# \dn
List of schemas
Name | Owner
--------+---------
api | carlson
public | carlson
Then a table:
carlson=# \d api.todos
Table "api.todos"
Column | Type | Collation | Nullable | Default
--------+--------------------------+-----------+----------+---------------------------------------
id | integer | | not null | nextval('api.todos_id_seq'::regclass)
done | boolean | | not null | false
task | text | | not null |
due | timestamp with time zone | | |
Indexes:
"todos_pkey" PRIMARY KEY, btree (id)
Finally, some data:
carlson=# select * from api.todos;
id | done | task | due
----+------+-------------------+-----
1 | f | finish tutorial 0 |
2 | f | pat self on back |
(2 rows)
But then I get this:
$ curl http://localhost:3000/todos
{"hint":null,"details":null,"code":"42P01","message":"relation
\"api.todos\" does not exist"}
Which is consistent with this:
carlson=# \d
Did not find any relations.
What am I doing wrong?
PS. I don't see which database this schema belongs to
Seems you're targeting the wrong database, check the db-uri config value and make sure this uri contains the api.todos table through psql.
Also, want to clarify that the search_path is modified by PostgREST on each request, so if you ALTER your connection user search_path it'll have no effect on the schemas PostgREST searches.
This question already has answers here:
Cannot simply use PostgreSQL table name ("relation does not exist")
(18 answers)
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(3 answers)
currval Function in PostgreSQL complaining that "column does not exist"
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(6 answers)
Error: Column does not exist
(1 answer)
Closed 5 years ago.
Here is what I have?
contacts=# \l
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
-----------+----------+----------+------------+------------+-----------------------
contacts | postgres | UTF8 | en_US.utf8 | en_US.utf8 |
postgres | postgres | UTF8 | en_US.utf8 | en_US.utf8 |
template0 | postgres | UTF8 | en_US.utf8 | en_US.utf8 | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | en_US.utf8 | en_US.utf8 | =c/postgres +
| | | | | postgres=CTc/postgres
(4 rows)
contacts=# \d
List of relations
Schema | Name | Type | Owner
--------+---------------+-------+----------
public | SequelizeMeta | table | postgres
(1 row)
contacts=# select * from SequelizeMeta;
ERROR: relation "sequelizemeta" does not exist
LINE 1: select * from SequelizeMeta;
^
contacts=# contacts=# select * from public.SequelizeMeta;
ERROR: relation "public.sequelizemeta" does not exist
LINE 1: select * from public.SequelizeMeta;
^
How do I read the contents of SequelizeMeta?
Thanks
Based on wildplasser command, this is what I had to do. Thank you wildplasser
contacts=# select * from "SequelizeMeta";
name
------
(0 rows)
I'm trying to create a list of every road in Germany (With latitude,longitude and Streetname).
So far I have imported the german osm file with the help of osm2pgsql into a postgres Database.
So what I am looking for is a query that allows me to query every road.
First of all I would suggest using the psql tool. So assuming your database is called gis enter the following command at the terminal:
psql gis
from within the psql tool you can query the database but first it is a g0od idea to get an idea of which tables were created by osm2psql, do this be entering:
\d
this should give you output like this:
List of relations
Schema | Name | Type | Owner
--------+--------------------+-------+----------
public | geography_columns | view | postgres
public | geometry_columns | table | gis
public | planet_osm_line | table | user
public | planet_osm_nodes | table | user
public | planet_osm_point | table | user
public | planet_osm_polygon | table | user
public | planet_osm_rels | table | user
public | planet_osm_roads | table | user
public | planet_osm_ways | table | user
public | spatial_ref_sys | table | gis
(10 rows)
There we can see a likely looking candidate in planet_osm_roads, enter:
\d planet_osm_roads
this will show you the structure of the roads table, which will look something like this:
Table "public.planet_osm_roads"
Column | Type | Modifiers
--------------------+----------+-----------
osm_id | bigint |
access | text |
addr:housename | text |
addr:housenumber | text |
addr:interpolation | text |
admin_level | text |
aerialway | text |
aeroway | text |
amenity | text |
....
waterway | text |
wetland | text |
width | text |
wood | text |
z_order | integer |
way_area | real |
way | geometry |
From there we can formulate our query. Something like:
SELECT osm_id,name,way FROM planet_osm_roads LIMIT 1;
will get you the first road in the list. The documentation at http://www.postgresql.org/docs/ will help you with decoding the way geometry string.