lua脚本的电晕混淆

Question

当我尝试从使用Corona SDK开发的应用程序之一解压缩corona存档时，我发现了Lua脚本的混淆代码，如下所示：

SELECT ers_reimbursements.*, 
   author_users.u_firstname AS author_fname, author_users.u_lastname AS author_lname,
   resolver_users.u_firstname AS resolver_fname, resolver_users.u_lastname AS resolver_lname,
   ers_reimbursement_type.rt_type, ers_reimbursement_status.rs_status
FROM ers_reimbursements
INNER JOIN ers_users AS author_users ON ers_users.u_id = ers_reimbursements.u_id_author
INNER JOIN ers_users AS resolver_users ON ers_users.u_id = ers_reimbursements.u_id_resolver
INNER JOIN ers_reimbursement_type ON ers_reimbursement_type.rt_id = ers_reimbursements.rt_type
INNER JOIN ers_reimbursement_status ON ers_reimbursement_status.rs_id = ers_reimbursements.rt_status
WHERE ers_reimbursements.r_id = 2;