Postgresql ERROR: Syntaxfehler bei oder in der Nähe von „PERFORM“, wenn eine verschachtelte IF-Anweisung in einer Prozedur

Question

Einfügen Ich habe die folgende Prozedur Abfrage, die gut funktioniert:

CREATE OR REPLACE FUNCTION table_update_notify() RETURNS trigger AS $$ 
DECLARE 
notification_channel text := TG_ARGV[0]; 
owner_id numeric := TG_ARGV[1]; 
owner_lat numeric := TG_ARGV[2]; 
owner_lng numeric := TG_ARGV[3]; 
trigger_radius numeric := TG_ARGV[4]; 
nearby_radius numeric := TG_ARGV[5]; 
changed_lat numeric; 
changed_lng numeric; 
user_id numeric; 
is_close boolean; 
name text; 
BEGIN 
    IF TG_OP = 'INSERT' OR TG_OP = 'UPDATE' THEN 
    changed_lat = NEW.lat; 
    changed_lng = NEW.lng; 
    user_id = NEW.user_id; 
    name = NEW.name; 
    ELSE 
    changed_lat = OLD.lat; 
    changed_lng = OLD.lng; 
    user_id = OLD.user_id; 
    name = OLD.name; 
    END IF; 
    -- If updated user's location is within the trigger radius of the trigger owner's location 
    IF earth_box(ll_to_earth(owner_lat, owner_lng), trigger_radius) @> ll_to_earth(changed_lat, changed_lng) 
    -- Don't notify owner if the owner's location changes 
    AND user_id != owner_id 
    THEN 

    PERFORM pg_notify(notification_channel, json_build_object('user_id', user_id, 'name', name, 'is_close', is_close)::text); 

    END IF; 
    RETURN NEW; 
END; 
$$ LANGUAGE plpgsql; 

Aber wenn ich legen Sie eine andere „IF“ System nach die "DANN", wie so, bekomme ich einen Fehler:

CREATE OR REPLACE FUNCTION table_update_notify() RETURNS trigger AS $$ 
DECLARE 
notification_channel text := TG_ARGV[0]; 
owner_id numeric := TG_ARGV[1]; 
owner_lat numeric := TG_ARGV[2]; 
owner_lng numeric := TG_ARGV[3]; 
trigger_radius numeric := TG_ARGV[4]; 
nearby_radius numeric := TG_ARGV[5]; 
changed_lat numeric; 
changed_lng numeric; 
user_id numeric; 
is_close boolean; 
name text; 
BEGIN 
    IF TG_OP = 'INSERT' OR TG_OP = 'UPDATE' THEN 
    changed_lat = NEW.lat; 
    changed_lng = NEW.lng; 
    user_id = NEW.user_id; 
    name = NEW.name; 
    ELSE 
    changed_lat = OLD.lat; 
    changed_lng = OLD.lng; 
    user_id = OLD.user_id; 
    name = OLD.name; 
    END IF; 
    -- If updated user's location is within the trigger radius of the trigger owner's location 
    IF earth_box(ll_to_earth(owner_lat, owner_lng), trigger_radius) @> ll_to_earth(changed_lat, changed_lng) 
    -- Don't notify owner if the owner's location changes 
    AND user_id != owner_id 
    THEN 

    -- If the user is close enough to the user to be considered nearby 
    IF earth_box(ll_to_earth(owner_lat, owner_lng), trigger_radius) @> ll_to_earth(changed_lat, changed_lng) THEN 
    is_close = true; 
    ELSE 
    is_close = false; 
    END IF 

    PERFORM pg_notify(notification_channel, json_build_object('user_id', user_id, 'name', name, 'is_close', is_close)::text); 

    END IF; 
    RETURN NEW; 
END; 
$$ LANGUAGE plpgsql; 

Und der Fehler ist:

ERROR: syntax error at or near "PERFORM" 
LINE 39: PERFORM pg_notify(notification_channel, json_build_object(... 

nach meinen Recherchen, Dies passiert, wenn die Sprache nicht auf plpgsql eingestellt ist, aber ich mache das eindeutig. Wie kann ich diese verschachtelte IF-Anweisung ausführen?

Answer 1

Sie verpassen ein Semikolon nach einem END IF:

END IF /* need semicolon here */ 

PERFORM pg_notify 

Best of luck.