我正在运行一个简单更新语句。执行时间太长。以下是更新和索引详细信息。
导出列的默认值为 0
UPDATE PAR_ITM SET exported = -1 WHERE exported < 1
索引:
CREATE NONCLUSTERED INDEX [IX_PAR_ITM_Exported_1]
ON [dbo].[PAR_ITM] ([exported] ASC)
WITH (
PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = ON, SORT_IN_TEMPDB = OFF,
IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON,
ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 80
) ON [PRIMARY]