feat(bd): V018 crea dbo.Product + SqlTestFixture consolida V018 + permisos catalogo (PRD-002 W6)

database/migrations/V018_ROLLBACK.sql

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+-- V018_ROLLBACK.sql
+-- Reversa de V018__create_product.sql — PRD-002.
+--
+-- Idempotente: cada paso usa IF EXISTS guards.
+-- ADVERTENCIA: Ejecutar antes de V017_ROLLBACK (FK desde Product hacia ProductType).
+
+SET QUOTED_IDENTIFIER ON;
+SET ANSI_NULLS ON;
+SET NOCOUNT ON;
+GO
+
+-- 1. SYSTEM_VERSIONING OFF
+IF EXISTS (SELECT 1 FROM sys.tables WHERE object_id = OBJECT_ID('dbo.Product') AND temporal_type = 2)
+BEGIN
+    ALTER TABLE dbo.Product SET (SYSTEM_VERSIONING = OFF);
+    PRINT 'Product: SYSTEM_VERSIONING = OFF.';
+END
+GO
+
+-- 2. DROP PERIOD
+IF EXISTS (SELECT 1 FROM sys.periods WHERE object_id = OBJECT_ID('dbo.Product'))
+BEGIN
+    ALTER TABLE dbo.Product DROP PERIOD FOR SYSTEM_TIME;
+    PRINT 'Product: PERIOD FOR SYSTEM_TIME dropped.';
+END
+GO
+
+-- 3. Drop HIDDEN columns + default constraints
+IF COL_LENGTH('dbo.Product', 'ValidFrom') IS NOT NULL
+BEGIN
+    ALTER TABLE dbo.Product DROP CONSTRAINT IF EXISTS DF_Product_ValidFrom;
+    ALTER TABLE dbo.Product DROP CONSTRAINT IF EXISTS DF_Product_ValidTo;
+    ALTER TABLE dbo.Product DROP COLUMN ValidFrom, ValidTo;
+    PRINT 'Product: ValidFrom/ValidTo columns dropped.';
+END
+GO
+
+-- 4. Drop history
+IF OBJECT_ID(N'dbo.Product_History', N'U') IS NOT NULL
+BEGIN
+    DROP TABLE dbo.Product_History;
+    PRINT 'Table dbo.Product_History dropped.';
+END
+GO
+
+-- 5. Drop main
+IF OBJECT_ID(N'dbo.Product', N'U') IS NOT NULL
+BEGIN
+    DROP TABLE dbo.Product;
+    PRINT 'Table dbo.Product dropped.';
+END
+GO
+
+-- 6. Remove RolPermiso / Permiso
+DELETE rp FROM dbo.RolPermiso rp
+    JOIN dbo.Permiso p ON p.Id = rp.PermisoId
+    WHERE p.Codigo = 'catalogo:productos:gestionar';
+PRINT 'RolPermiso rows for catalogo:productos:gestionar deleted.';
+GO
+
+DELETE FROM dbo.Permiso WHERE Codigo = 'catalogo:productos:gestionar';
+PRINT 'Permiso catalogo:productos:gestionar deleted.';
+GO
+
+PRINT '';
+PRINT 'V018 rolled back successfully.';
+GO