I Keep Getting the Error "Relation [Table] Does Not Exist"

Cannot simply use PostgreSQL table name (relation does not exist)

From what I've read, this error means that you're not referencing the table name correctly. One common reason is that the table is defined with a mixed-case spelling, and you're trying to query it with all lower-case.

In other words, the following fails:

CREATE TABLE "SF_Bands" ( ... );

SELECT * FROM sf_bands;  -- ERROR!

Use double-quotes to delimit identifiers so you can use the specific mixed-case spelling as the table is defined.

SELECT * FROM "SF_Bands";

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Re your comment, you can add a schema to the "search_path" so that when you reference a table name without qualifying its schema, the query will match that table name by checked each schema in order. Just like PATH in the shell or include_path in PHP, etc. You can check your current schema search path:

SHOW search_path
  "$user",public

You can change your schema search path:

SET search_path TO showfinder,public;

See also http://www.postgresql.org/docs/8.3/static/ddl-schemas.html

Postgresql tables exists, but getting relation does not exist when querying

You have to include the schema if isnt a public one

SELECT *
FROM <schema>."my_table"

Or you can change your default schema

SHOW search_path;
SET search_path TO my_schema;

Check your table schema here

SELECT *
FROM information_schema.columns

For example if a table is on the default schema public both this will works ok

SELECT * FROM parroquias_region
SELECT * FROM public.parroquias_region

But sectors need specify the schema

SELECT * FROM map_update.sectores_point

PostgreSQL error: relation Table does not exist

Before this two tables have you created this tables:

• Users
• Cinemas
• Actor
• Director
• UserComments

If you have not then both of this tables will not be created.

Also please check have you created a type called RATE.

If you have already created tables I have mentioned and datatype RATE make sure you have primary key's in this table so your foreign key's can reference them.

Then, if you have done all of this do check the comment from @TheImpaler: "DEFAULT '000' on a primary key (or any key) makes little sense.".

Also, when you have primary key on the column you do not need NOT NULL constraint.

After all of that you will have two codes that work:
https://dbfiddle.uk/?rdbms=postgres_12&fiddle=a91b77594583e6768360709ef7a9f494

After commenting with the OP I have discovered that he can create the table by referencing the schema before the table name like this:

create table schema_name.Series...

I keep getting the error relation [TABLE] does not exist

Each element has to be quoted individually:

select "ID" 
from "Schema"."table1";

More details about quoted identifiers are in the manual

ERROR: relation table does not exist, even though both the database and the table exist

SQL statements are case sensitive and incoming identifiers are lowercased unless specifically forced with double quotes.

This means that to refer to your tabDefaultValue, you need to use the following statement:

select * from _a66df261120b6c23."tabDefaultValue";

Note that the quotes are around the table name only, if you quote dbname.tablename together, this will be considered a single identifier with a dot in the middle.

How to fix relation table_name does not exist ERROR even when using 'IF EXISTS-THEN' pgsql block?

13.0 has known unfixed bugs. 13.4 is the latest release of 13. There is almost never a good reason to run an old minor release version. Not that that seems to be relevant here.

But what you are missing here is that at the top level, EXISTS checks to see if a SELECT returns any rows. It does not check to see if tables mentioned in the FROM list of the SELECT exist or not, it assumes they do.

You could change your query so that it queries the catalog to see if the table exists, something like:

IF EXISTS 
    (SELECT 1 FROM pg_class where relname=$J$scm_repos$J$)
...

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