alter index常用的语法如下: (1)重建指定索引: ALTER INDEX ind ON TA REBUILD; (2)重建全部索引: ALTER INDEX ALL ON TA REBUILD; (3)禁用索引: ALTER INDEX ALL ON TA DISABLE; (再次启用使用REBUILD重建而不是ENABLED) (4)指定参数重建索引: ALTER INDEX ALL ON TA REBUILD WITH(FILLFACTOR=80); (5)指定参数修改索引: ALTER INDEX ALL ON TA SET(IGNORE_DUP_KEY = ON);