Implement assignment import and clear of budget

postgres/transactions.sql.go

@@ -48,6 +48,21 @@ func (q *Queries) CreateTransaction(ctx context.Context, arg CreateTransactionPa
 	return i, err
 }
 
+const deleteAllTransactions = `-- name: DeleteAllTransactions :execrows
+DELETE FROM transactions
+USING accounts
+WHERE accounts.budget_id = $1
+AND accounts.id = transactions.account_id
+`
+
+func (q *Queries) DeleteAllTransactions(ctx context.Context, budgetID uuid.UUID) (int64, error) {
+	result, err := q.db.ExecContext(ctx, deleteAllTransactions, budgetID)
+	if err != nil {
+		return 0, err
+	}
+	return result.RowsAffected()
+}
+
 const getTransactionsForAccount = `-- name: GetTransactionsForAccount :many
 SELECT  transactions.id, transactions.date, transactions.memo, transactions.amount,
         accounts.name as account, COALESCE(payees.name, '') as payee, COALESCE(category_groups.name, '') as category_group, COALESCE(categories.name, '') as category