plpgsql - PostgreSQL - Language pgplsql does not exist despite running CREATE LANGUAGE -

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I tried to create my first plpgsql function. When executing the script, I get

error: language "'plpgsql' 'does not exist

Then I create LANGUAGE plpgsql to launch command; which shows the following error:

Error: The language "plpgsql" already exists

The commands are running on the same database.

Relationship

Peter < /p>

Please note that your error has extra characters, most likely you have written: 

  create a function ... language 'pl Pgsql '

sort mysql things like this Bad syntax is just do it 

  Create function ... language plpgsql

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