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Doc: use CURRENT_USER not USER in plpgsql trigger examples.

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While these two built-in functions do exactly the same thing,
CURRENT_USER seems preferable to use in documentation examples.
It's easier to look up if the reader is unsure what it is.
Also, this puts these examples in sync with an adjacent example
that already used CURRENT_USER.

Per question from Kirk Parker.

Discussion: https://postgr.es/m/CANwZ8rmN_Eb0h0hoMRS8Feftaik0z89PxVsKg+cP+PctuOq=Qg@mail.gmail.com
This commit is contained in:
Tom Lane 2023-10-09 11:29:21 -04:00
parent 6e331c4a4f
commit 9f597bafac
1 changed files with 9 additions and 9 deletions
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18
doc/src/sgml/plpgsql.sgml
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@ -4300,11 +4300,11 @@ CREATE OR REPLACE FUNCTION process_emp_audit() RETURNS TRIGGER AS $emp_audit$
-- making use of the special variable TG_OP to work out the operation. -- making use of the special variable TG_OP to work out the operation.
-- --
IF (TG_OP = 'DELETE') THEN IF (TG_OP = 'DELETE') THEN
INSERT INTO emp_audit SELECT 'D', now(), user, OLD.*; INSERT INTO emp_audit SELECT 'D', now(), current_user, OLD.*;
ELSIF (TG_OP = 'UPDATE') THEN ELSIF (TG_OP = 'UPDATE') THEN
INSERT INTO emp_audit SELECT 'U', now(), user, NEW.*; INSERT INTO emp_audit SELECT 'U', now(), current_user, NEW.*;
ELSIF (TG_OP = 'INSERT') THEN ELSIF (TG_OP = 'INSERT') THEN
INSERT INTO emp_audit SELECT 'I', now(), user, NEW.*; INSERT INTO emp_audit SELECT 'I', now(), current_user, NEW.*;
END IF; END IF;
RETURN NULL; -- result is ignored since this is an AFTER trigger RETURN NULL; -- result is ignored since this is an AFTER trigger
END; END;
@ -4370,20 +4370,20 @@ CREATE OR REPLACE FUNCTION update_emp_view() RETURNS TRIGGER AS $$
IF NOT FOUND THEN RETURN NULL; END IF; IF NOT FOUND THEN RETURN NULL; END IF;
OLD.last_updated = now(); OLD.last_updated = now();
INSERT INTO emp_audit VALUES('D', user, OLD.*); INSERT INTO emp_audit VALUES('D', current_user, OLD.*);
RETURN OLD; RETURN OLD;
ELSIF (TG_OP = 'UPDATE') THEN ELSIF (TG_OP = 'UPDATE') THEN
UPDATE emp SET salary = NEW.salary WHERE empname = OLD.empname; UPDATE emp SET salary = NEW.salary WHERE empname = OLD.empname;
IF NOT FOUND THEN RETURN NULL; END IF; IF NOT FOUND THEN RETURN NULL; END IF;
NEW.last_updated = now(); NEW.last_updated = now();
INSERT INTO emp_audit VALUES('U', user, NEW.*); INSERT INTO emp_audit VALUES('U', current_user, NEW.*);
RETURN NEW; RETURN NEW;
ELSIF (TG_OP = 'INSERT') THEN ELSIF (TG_OP = 'INSERT') THEN
INSERT INTO emp VALUES(NEW.empname, NEW.salary); INSERT INTO emp VALUES(NEW.empname, NEW.salary);
NEW.last_updated = now(); NEW.last_updated = now();
INSERT INTO emp_audit VALUES('I', user, NEW.*); INSERT INTO emp_audit VALUES('I', current_user, NEW.*);
RETURN NEW; RETURN NEW;
END IF; END IF;
END; END;
@ -4598,13 +4598,13 @@ CREATE OR REPLACE FUNCTION process_emp_audit() RETURNS TRIGGER AS $emp_audit$
-- --
IF (TG_OP = 'DELETE') THEN IF (TG_OP = 'DELETE') THEN
INSERT INTO emp_audit INSERT INTO emp_audit
SELECT 'D', now(), user, o.* FROM old_table o; SELECT 'D', now(), current_user, o.* FROM old_table o;
ELSIF (TG_OP = 'UPDATE') THEN ELSIF (TG_OP = 'UPDATE') THEN
INSERT INTO emp_audit INSERT INTO emp_audit
SELECT 'U', now(), user, n.* FROM new_table n; SELECT 'U', now(), current_user, n.* FROM new_table n;
ELSIF (TG_OP = 'INSERT') THEN ELSIF (TG_OP = 'INSERT') THEN
INSERT INTO emp_audit INSERT INTO emp_audit
SELECT 'I', now(), user, n.* FROM new_table n; SELECT 'I', now(), current_user, n.* FROM new_table n;
END IF; END IF;
RETURN NULL; -- result is ignored since this is an AFTER trigger RETURN NULL; -- result is ignored since this is an AFTER trigger
END; END;