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Current File : //home/uiet/iRedMail-1.5.0/update/0.9.8/amavisd.pgsql

-- If subject/from_addr contains emoji, varchar doesn't work well.
ALTER TABLE msgs ALTER COLUMN subject DROP DEFAULT;
ALTER TABLE msgs ALTER COLUMN subject TYPE bytea USING subject::bytea;
ALTER TABLE msgs ALTER COLUMN subject SET DEFAULT '';

ALTER TABLE msgs ALTER COLUMN from_addr DROP DEFAULT;
ALTER TABLE msgs ALTER COLUMN from_addr TYPE bytea USING subject::bytea;
ALTER TABLE msgs ALTER COLUMN from_addr SET DEFAULT '';

-- mail address without address extension: user+abc@domain.com -> user@domain.com
ALTER TABLE maddr ADD COLUMN email_raw VARCHAR(255) NOT NULL DEFAULT '';

-- index
CREATE INDEX maddr_idx_email ON maddr (email);
CREATE INDEX maddr_idx_email_raw ON maddr (email_raw);
CREATE INDEX maddr_idx_domain ON maddr (domain);

-- Create trigger to save email address withou address extension
-- user+abc@domain.com -> user@domain.com
-- CREATE OR REPLACE FUNCTION strip_addr_extension(bytea, varchar, integer) RETURNS TRIGGER AS $$
CREATE OR REPLACE FUNCTION strip_addr_extension()
RETURNS TRIGGER AS $$
BEGIN
    IF (NEW.email LIKE '%+%') THEN
        NEW.email_raw := split_part(convert_from(NEW.email, 'UTF8'), '+', 1) || '@' || split_part(convert_from(NEW.email, 'UTF8'), '@', 2);
    ELSE
        NEW.email_raw := convert_from(NEW.email, 'UTF8');
    END IF;
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

CREATE TRIGGER maddr_email_raw
    BEFORE INSERT ON maddr
    FOR EACH ROW
    EXECUTE PROCEDURE strip_addr_extension();

-- Update all existing records.
UPDATE maddr SET email_raw=email WHERE email_raw='';