add product migrations

migrations/000069_add_outlet_id_to_products.down.sql

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+-- Remove foreign key constraint
+ALTER TABLE products DROP CONSTRAINT IF EXISTS fk_products_outlet;
+
+-- Remove index
+DROP INDEX IF EXISTS idx_products_outlet_id;
+
+-- Remove outlet_id column
+ALTER TABLE products DROP COLUMN IF EXISTS outlet_id;

migrations/000069_add_outlet_id_to_products.up.sql

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+-- Add nullable outlet_id column to products table
+ALTER TABLE products ADD COLUMN outlet_id UUID;
+
+-- Create index on outlet_id for faster queries
+CREATE INDEX idx_products_outlet_id ON products (outlet_id);
+
+-- Add foreign key constraint
+ALTER TABLE products ADD CONSTRAINT fk_products_outlet FOREIGN KEY (outlet_id) REFERENCES outlets(id) ON DELETE SET NULL;