摘要： --修改表IFEXISTS(SELECT*FROMsysobjectsWHEREtype='U'ANDname='test')begindroptabletestendGOcreatetabletest(TIDintprimarykeyidentity(1,1),TNamevarchar(50)--修改視圖IFEXISTS(SELECT*FROMsysobjectsWHEREtype='V'ANDname='view_select')begindropviewview_selectendGOcreateviewview_selec 阅读全文