Cannot select columns by their names in PostgreSQL [duplicate] - sql

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PostgreSQL "Column does not exist" but it actually does
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Closed 10 months ago.
I downloaded a PostreSQL file that creates and populates the Chinoook database (a relatively well known database used for testing).
I then opened the file on sqliteonline (an online compiler where you can test SQL code).
Opening the SQL file created and populated all tables as expected. However, the following query throws an error:
SELECT ArtistId
FROM "Artist";
db error: ERROR: column "artistid" does not exist
Which is odd, because the column does exist in that table:
select *
from "Artist";
ArtistId
Name
1
AC/DC
2
Accept
3
Aerosmith
4
Alanis Morissette
5
Alice in Chains
How come I cannot select any columns by their names?

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Postgresql "ERROR: column ... does not exist" In A Simple Query [duplicate]

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The query is:
select *
from "someTable"
where "id" = "9gf1gf3123";
Postgresql gives me the error column does not exist while there wasn't a problem with my sql statement. The id exists, the table exists, I want to see everyting in my table, but does not work.
There are a lot of questions about this error but I wasn't able to find a solution.
The problem was, I was writing string with ", not with '.
When I changed the query like:
select *
from "userGroupUserOrganizations"
where "id" = '9fce8e9b-597a-4100-bb3c-efb86aaa83ae';
it worked

SQL WHERE - Column (value) does not exist [duplicate]

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I'm attempting to do the most basic WHERE statement in psql and I'm getting a strange error:
ERROR: column "rom_tut" does not exist
LINE 1: SELECT * FROM pg_roles WHERE rolname="rom_tut";
Why is it complaining that the value isn't a column?
use single quote for string value because double quote means column name
SELECT * FROM pg_roles WHERE rolname='rom_tut'

Postgresql Column Doesn't Exist [duplicate]

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I'm running a simple select query:
SELECT return_part_i.CntrctTrmntnInd FROM return_part_i LIMIT 10;
And getting the following error:
ERROR: column return_part_i.cntrcttrmntnind does not exist LINE 1:
SELECT return_part_i.CntrctTrmntnInd FROM return_part_i LIMI...
^ HINT: Perhaps you meant to reference the column "return_part_i.CntrctTrmntnInd". SQL state: 42703 Character: 8
I have tried the query with and without the table identifier. I am copying the field name directly from the hint. This is happening with numerous fields in the database.
if you really have a camel case in you column name then you must wrap the column name with double quote
SELECT "CntrctTrmntnInd" FROM return_part_i LIMIT 10;
PostgreSQL columns (object) name are case sensitive when specified with double quotes. Unquoted identifiers are automatically used as lowercase so the correct case sequence must be write with double quotes
and as correctly suggested by Raymond Nijland if you want a LIMIT in result you should use an order by
SELECT "CntrctTrmntnInd" FROM return_part_i ORDER BY "CntrctTrmntnInd" LIMIT 10;

postgres constantly gives "schema does not exist" errors [duplicate]

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I managed to create a table in a schema FOO.
Whenever I then try and do anything, like even a basic select, I just get:
ERROR: schema "FOO" does not exist
SQL state: 3F000
Character: 15
I am running the select in the same edit window as I created (using pgAdmin4). I get the same error when I try and create a view call FOO.Info. Yet when I try and create a new table in FOO it works.
What's going on? I am using the same syntax to refer to the table in the select as the create.
# worked fine
CREATE TABLE "FOO"."Events"
(
...
# all these have the error
select * from "FOO"."Events";
select * from FOO.Events;
select * from Foo.Events;
postgres=# \dn
List of schemas
Name | Owner
--------+----------
foo | postgres
public | postgres
(2 rows)
I believe you created it as
create schema FOO;
which creates schema "foo", not "FOO"
And then you reference it as
select * from "FOO".table_name
so it is not found