create view xg_product_out_list as
select gpr_id,gp_id,a.barcode as barcode,company_name as kehu,10000000+ot_id as po_id,is_print,print_time,print_user_name,print_real_name,is_balance,balance_time,balance_user_name,balance_real_name,c.pt_id as pt_id,product_name,item_no,price,unit,a.ct_id as ct_id,c.quantity as shuliang,real_name,a.add_time,a.remark,'扫描' as opt_type from xg_product_out as a,xg_garage_finish as c
join xg_product on xg_product.pt_id=c.pt_id
join xg_client on xg_client.ct_id=c.ct_id
join xg_product_price on xg_product_price.pt_id=c.pt_id and xg_product_price.ct_id=c.ct_id
where a.barcode=c.barcode
UNION ALL
select gpr_id,20000000+mt_id as gp_id,'' as barcode,company_name as kehu,20000000+mt_id as po_id,is_print,print_time,print_user_name,print_real_name,is_balance,balance_time,balance_user_name,balance_real_name,b.pt_id as pt_id,product_name,item_no,price,unit,b.ct_id as ct_id,b.quantity as shuliang,real_name1 as real_name,b.add_time,b.remark,'手工' as opt_type from xg_manual_out as b
join xg_product on xg_product.pt_id=b.pt_id
join xg_client on xg_client.ct_id=b.ct_id
join xg_product_price on xg_product_price.pt_id=b.pt_id and xg_product_price.ct_id=b.ct_id
where is_check = 'Y'
如果分开执行的话
第一个查询语句，1秒都不用，瞬间就完成了（总共记录有5051条）
单二个查询语句，1秒都不用，瞬间就完成了（总共记录有0条）
如果两个查询用UNION ALL连接，就要花10秒钟。
请教各位，有什么好方法优化一下。谢谢！
