SQL 存储过程删除和创建索引答案

【问题标题】：SQL stored procedure drop and create indexesSQL 存储过程删除和创建索引
【发布时间】：2023-03-16 16:10:01
【问题描述】：

我需要截断一个表来刷新数据，但是这个表有一个索引视图取决于它。我正在尝试删除索引，然后截断表，然后重新创建索引。我收到一个错误，即非聚集索引不存在或我无权删除它们...代码位于如下所示的存储过程中。我假设它与存储过程中的执行顺序有关，因为手动执行代码（删除/截断/创建）是有效的。

DROP INDEX [IDX_VDetailEmergency] ON [dbo].[vFactEmergencySummary] WITH ( ONLINE = OFF )
DROP INDEX [IDX_VDetailEmergency_facility_refno] ON [dbo].[vFactEmergencySummary] WITH ( ONLINE = OFF )
DROP INDEX [IDX_VDetailEmergency_mode_of_separation_refno] ON [dbo].[vFactEmergencySummary] WITH ( ONLINE = OFF )
DROP INDEX [IDX_VDetailEmergency_period_refno] ON [dbo].[vFactEmergencySummary] WITH ( ONLINE = OFF )

truncate table DetailEmergency

CREATE UNIQUE CLUSTERED INDEX [IDX_VDetailEmergency] ON [dbo].[vFactEmergencySummary] 
(
    [facility_refno] ASC,
    [period_refno] ASC,
    [mode_of_separation_refno] ASC,
    [ed_visit_type_refno] ASC,
    [triage_category] ASC,
    [UDG_refno] ASC,
    [URG_refno] ASC,
    [URG_MDB_refno] ASC
) WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]

CREATE NONCLUSTERED INDEX [IDX_VDetailEmergency_facility_refno] ON [dbo].[vFactEmergencySummary] 
(
    [facility_refno] ASC
) WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF,     DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]

CREATE NONCLUSTERED INDEX [IDX_VDetailEmergency_mode_of_separation_refno] ON [dbo].[vFactEmergencySummary] 
(
   mode_of_separation_refno ASC
) WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]

CREATE NONCLUSTERED INDEX [IDX_VDetailEmergency_period_refno] ON [dbo].[vFactEmergencySummary] 
(
   period_refno ASC
) WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]

【问题讨论】：

您可能想重新考虑在不少于 8 列上拥有一个聚集索引！这永远不会非常有效，而且会浪费大量空间，因为所有这些列也将被复制到每个非聚集索引中！

标签： sql sql-server stored-procedures indexing

【解决方案1】：

如果您可以删除和重新创建表，则可以使用 SQL Server Management Studio 执行以下步骤：

右键单击您的表所在的数据库
点击任务 -> 生成脚本
按下一步导航到选择对象
选择特定的数据库对象
选择您的餐桌
按高级
在列表中找到Script DROP and CREATE，将下拉列表改为Script DROP and CREATE
如果您想在脚本中包含索引或约束等，请向下滚动
按确定并选择保存到新查询窗口以在新查询窗口中查看您的脚本
按下一步和完成

管理愉快！

【讨论】：