PostgreSQL - WHERE clause not working - Column name not found [duplicate] - sql

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Simple Postgresql Statement - column name does not exists
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What is the difference between single quotes and double quotes in PostgreSQL?
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My simple WHERE query is not working. It says column "Exception" does not exist, but the column it type, that is only a value.
SQL Query:
select * from logs
where type = "Exception"

As S-Man commented the answer is:
" characters are for column names. You have to use ' characters.

Try this one:
SELECT *
FROM
logs
WHERE
type = 'Exception'

Related

When do we use double quotes for table names in SQL? [duplicate]

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A SQL coding challenge provided a database; every table was accessible when passed as a string using double quotes and not when passed as a word as I am normally used to.
This did not work:
SELECT * FROM Athletes;
Error message: relation does not exist.
But this worked and I don't understand why:
SELECT * FROM "Athletes";
Was this defined during the database creation? Or is this from PostgreSQL?

How to use keyword in Postgres namespace? [duplicate]

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I have a Postgres db. The tables are each in separate namespaces, which are named using two character state codes. The problem is this: for the state Indiana, the state code is "in". I am trying to execute this query:
SELECT city_name
FROM in.places
But I keep getting an error complaining about the 'in', presumably because there is a reserved keyword IN. How can I query the tables inside the 'in' namespace?

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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Closed 4 years ago.
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;