消息 5074，级别 16，状态 1，第 1 行 索引'_dta_index_Tblexam_39_1648724926__K4_K3_K14_K2_1_7_8_9_10_11_12
drop index _dta_index_Tblexam_39_1648724926__K4_K3_K14_K2_1_7_8_9_10_11_12 on tblexam ;
drop index _dta_index_Tblexam_39_1648724926__K4_K3_K14_K2_1_7_8_9_10_11_12 on tblexam ;