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CREATE TABLE vendor(id INT IDENTITY(1,1), vendor NVARCHAR(100), countAux INT DEFAULT (0));
CREATE TABLE vendorAUX(id INT, vendor NVARCHAR(100), aux NVARCHAR(100));
DECLARE @id INT;
INSERT INTO vendor(vendor) VALUES('V123')
SET @id = SCOPE_IDENTITY();
INSERT INTO vendorAUX(id, vendor, aux) VALUES(@id, 'V123', 'test')
INSERT INTO vendorAUX(id, vendor, aux) VALUES(@id, 'V123', 'test some more')
INSERT INTO vendorAUX(id, vendor, aux) VALUES(@id, 'V123', 'test again')
CREATE TRIGGER trg_vendor ON Vendor FOR UPDATE
SET a.vendor = i.vendor
FROM vendorAUX a
INNER JOIN inserted i ON i.id = a.id
CREATE TRIGGER trg_count_aux ON VendorAUX FOR UPDATE
SET v.countAux = (SELECT COUNT(*) FROM vendorAUX WHERE id = v.id)
FROM vendor v
INNER JOIN inserted i ON i.id = v.id
SET vendor = 'V234'
WHERE vendor = 'V123';
SELECT * FROM vendorAUX;
SELECT * FROM vendor;
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