Initial commit

fix-customer-email-index.sql

@@ -0,0 +1,61 @@
+-- ============================================================================
+-- Fix Customer Email Index for Multi-Tenancy
+-- This allows the same email to exist across different companies
+-- but prevents duplicate emails within the same company
+-- ============================================================================
+
+USE PowderCoatingDb
+GO
+
+-- Step 1: Check if the old index exists
+IF EXISTS (SELECT * FROM sys.indexes WHERE name = 'IX_Customers_Email' AND object_id = OBJECT_ID('Customers'))
+BEGIN
+    PRINT 'Dropping old IX_Customers_Email index...'
+
+    -- Drop the old unique index that enforces global email uniqueness
+    DROP INDEX IX_Customers_Email ON Customers
+
+    PRINT 'Old index dropped successfully.'
+END
+ELSE
+BEGIN
+    PRINT 'Old index IX_Customers_Email not found (may have already been dropped).'
+END
+GO
+
+-- Step 2: Create new unique index scoped to CompanyId
+PRINT 'Creating new company-scoped IX_Customers_Email index...'
+
+CREATE UNIQUE INDEX IX_Customers_Email
+ON Customers (CompanyId, Email)
+WHERE [Email] IS NOT NULL AND [IsDeleted] = 0
+GO
+
+PRINT 'New index created successfully!'
+PRINT ''
+PRINT 'The Customers table now allows:'
+PRINT '  ✓ Same email across different companies'
+PRINT '  ✓ Prevents duplicate emails within the same company'
+PRINT '  ✓ Ignores soft-deleted records'
+GO
+
+-- Step 3: Verify the new index
+SELECT
+    i.name AS IndexName,
+    i.is_unique AS IsUnique,
+    STUFF((
+        SELECT ', ' + COL_NAME(ic.object_id, ic.column_id)
+        FROM sys.index_columns ic
+        WHERE ic.object_id = i.object_id AND ic.index_id = i.index_id
+        ORDER BY ic.key_ordinal
+        FOR XML PATH('')
+    ), 1, 2, '') AS IndexColumns,
+    i.filter_definition AS FilterDefinition
+FROM sys.indexes i
+WHERE i.object_id = OBJECT_ID('Customers')
+    AND i.name = 'IX_Customers_Email'
+GO
+
+PRINT ''
+PRINT 'Index verification complete. You can now seed customer data!'
+GO