Feat[BE-221]: create So DO migration

internal/database/migrations/20251107013921_create_marketings.up.sql

@@ -0,0 +1,44 @@
+CREATE TABLE marketings (
+    id BIGSERIAL PRIMARY KEY,
+    so_number VARCHAR(255) UNIQUE NOT NULL,
+    customer_id BIGINT NOT NULL,
+    so_docs VARCHAR(20),
+    so_date DATE NOT NULL,
+    sales_person_id BIGINT NOT NULL,
+    notes TEXT,
+    created_by BIGINT NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ
+);
+
+DO $$
+BEGIN
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'customers') THEN
+        ALTER TABLE marketings
+            ADD CONSTRAINT fk_marketings_customer_id 
+            FOREIGN KEY (customer_id) REFERENCES customers(id) ON DELETE RESTRICT;
+    END IF;
+
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'users') THEN
+        ALTER TABLE marketings
+            ADD CONSTRAINT fk_marketings_sales_person_id 
+            FOREIGN KEY (sales_person_id) REFERENCES users(id) ON DELETE RESTRICT;
+    END IF;
+
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'users') THEN
+        ALTER TABLE marketings
+            ADD CONSTRAINT fk_marketings_created_by 
+            FOREIGN KEY (created_by) REFERENCES users(id) ON DELETE RESTRICT;
+    END IF;
+END $$;
+
+CREATE INDEX idx_marketings_customer_id ON marketings (customer_id);
+
+CREATE INDEX idx_marketings_sales_person_id ON marketings (sales_person_id);
+
+CREATE INDEX idx_marketings_created_by ON marketings (created_by);
+
+CREATE INDEX idx_marketings_so_date ON marketings (so_date);
+
+CREATE INDEX idx_marketings_deleted_at ON marketings (deleted_at);