A.delete from sales B.delete profits from sales where product_type=’TOYS’ C.delete from sales where product_type=’ToYS’ D.update sales set profits=null where product_type=’TOYS’
A.sybsystemprocs B.model C.master D.sybsystemdb
A.指定用戶使用的shell類型 B.UID C.GID D.用戶主文件夾