Assign a constant value in a trigger function - sql

Question

I am learning triggers in PostgreSQL.
I have created a trigger function update_name():
CREATE OR REPLACE FUNCTION update_name()
RETURNS trigger AS
$BODY$
BEGIN
NEW.name := "ankit";
RETURN NEW;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;
ALTER FUNCTION update_name()
OWNER TO postgres;
My table user_table is:
CREATE TABLE user_table (
name character varying(20) NOT NULL,
password character varying(20),
email character varying(20),
gender character varying(20),
phone bigint,
CONSTRAINT user_table_pkey PRIMARY KEY (name)
);
and the trigger for the table is :
CREATE TRIGGER "change-name"
BEFORE INSERT OR UPDATE
ON user_table
FOR EACH ROW
EXECUTE PROCEDURE update_name();
when I am inserting data to my table using query:
INSERT INTO user_table(name, password, email, gender, phone)
VALUES ('aa', '9874', 'poi#ka.in', 'male', 8978987896);
I've got the error:
ERROR: column "ankit" does not exist
LINE 1: SELECT "ankit"
^
QUERY: SELECT "ankit"
CONTEXT: PL/pgSQL function update_name() line 3 at assignment
********** Error **********
ERROR: column "ankit" does not exist
SQL state: 42703
Context: PL/pgSQL function update_name() line 3 at assignment
What am I doing wrong?

Answer 1

This is about PostgreSQL syntax. I removed irrelevant references to pgAdmin from the question.
In Postgres, literal values (constants) are enclosed in single quotes: 'value'.
Double quotes are reserved for identifiers but optional as long as it consists of legal, lower-case letters: "Odd Name" vs. odd_name.
This is also the SQL standard. Start by reading the chapter "Lexical Structure" in the manual.

Answer 2

The ERROR has gone by changing just:
NEW.name := "ankit";
to
NEW.name := 'ankit';
Why is it so???

Answer 3

CREATE OR REPLACE FUNCTION update_name()
RETURNS trigger AS
$BODY$
BEGIN
RAISE NOTICE 'RECORD IS INSERTED %',NEW.name;
INSERT INTO user_table VALUES("ankit",NEW.password,NEW.email,NEW.gender,NEW.phone);
RETURN NEW;
end if;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;
ALTER FUNCTION update_name()
OWNER TO postgres;
Try this out this will help you.