Initial commit

sqlscripts/triggers/unused/dml-trigger-trg_insert_product_values.sql

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+USE [Database]
+
+IF OBJECT_ID('[Tables].[trg_insert_product_values]', 'TR') IS NOT NULL
+  DROP TRIGGER [Tables].[trg_insert_product_values];
+GO
+CREATE TRIGGER [Tables].[trg_insert_product_values] ON [Tables].[product_values] AFTER INSERT
+AS
+  IF EXISTS(
+    SELECT *
+    FROM (
+      SELECT [i].[value], COUNT(*) AS [count]
+        FROM [Tables].[product_values] AS [PV]
+        JOIN [inserted] AS [i]
+          ON [i].[id] = [PV].[product_id]
+    ) AS [values]
+    WHERE [count] > 1
+  )
+  BEGIN
+    ROLLBACK TRANSACTION;
+	RETURN;
+  END
+GO