将过滤索引放置在分区列上时，日期时间转换失败

Question

在向表中插入新行时，我遇到了字符数据转换的神秘错误。故障排除表明过滤索引是问题的根源。

索引的过滤器使用 DateTime 列，该列也是表的分区列。一些客户端默认与俄语连接并收到错误消息。我设法在测试表上重现它。

有没有人对为什么会发生这种情况有任何想法？

use YOUR_DATABASE ;

go

select @@VERSION ;

-- Microsoft SQL Server 2016 (SP2-CU1) ...

-----------------------------------------------------------------------------

-- CREATE DATETIME PARTITIONED TABLE

set language english ;

drop table if exists dbo.test_of_filtered_idx ;

drop partition scheme ps_test_of_filtered_idx ;

drop partition function pf_test_of_filtered_idx ;

go



set language english ;

go

create partition function pf_test_of_filtered_idx (datetime)

   as range right 

   for values ('1999-11-01 00:00:00.000' , '1999-12-01 00:00:00.000' , '2000-01-01 00:00:00.000' , '2000-02-01 00:00:00.000')



create partition scheme ps_test_of_filtered_idx

  as partition pf_test_of_filtered_idx

  ALL to ([primary])



create table dbo.test_of_filtered_idx

(

  id int not null identity (1,1) ,

  dt datetime not null ,

  payload char(127) not null default(replicate('A' , 127)) ,

  constraint PK__test_of_filtered_idx primary key clustered (id , dt)

) on [ps_test_of_filtered_idx] (dt) ;

go

-----------------------------------------------------------------------------

-- INSERT TEST ROW AND CREATE DATETIME FILTERED INDEX

set language russian ;

go

insert into dbo.test_of_filtered_idx (dt) output inserted.* values ('15.12.1999 00:00:00.000' /* russian datetime format DMY */) ;

go

set language english ;

go

create index IXF__test_of_filtered_idx__dt

  on dbo.test_of_filtered_idx

  (dt) include (id)

  where dt >= '1999-12-10 00:00:00.000' 

    and dt < '2000-01-20 00:00:00.000' ;

go

-----------------------------------------------------------------------------

-- CHECK 

set language english ;

go

insert into dbo.test_of_filtered_idx (dt) output inserted.* values ('12/15/1999 00:00:00.000' /* native american datetime format MDY */) ;

go

-- GET ERROR

set language russian ;

go

insert into dbo.test_of_filtered_idx (dt) output inserted.* values ('15.12.1999 00:00:00.000' /* russian datetime format DMY */) ;

-- ?????????????? ???? ?????? varchar ? ??? ?????? datetime ??????? ? ?????? ???????? ?? ??????? ?????????.

-- The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value.

go

-----------------------------------------------------------------------------

-- DROP INDEX AND GET ERRORFREE INSERTION

set language english ;

go

drop index IXF__test_of_filtered_idx__dt

  on dbo.test_of_filtered_idx

;

go

set language russian ;

go

insert into dbo.test_of_filtered_idx (dt) output inserted.* values ('15.12.1999 00:00:00.000' /* russian datetime format DMY */) ;

go

-----------------------------------------------------------------------------

Answer 1

错误来自转换字符串2000-01-20 00:00:00.000（在过滤的索引定义中）

更改过滤索引以使用明确的日期时间格式有效。

create index IXF__test_of_filtered_idx__dt
  on dbo.test_of_filtered_idx
  (dt) include (id)
  where dt >= '19991210 00:00:00.000' 
    and dt < '20000120 00:00:00.000' ;

对我来说，过滤索引范围是根据客户端的设置解释的，因此在过滤索引中可以包含或不包含相同的日期，这取决于插入时客户端的设置（如下所示），这对我来说绝对是错误的演示）

CREATE TABLE T
  (
     dt DATETIME
  )

CREATE INDEX IXF__test_of_filtered_idx__dt
  ON T (dt)
  WHERE dt >= '1999-01-06' AND dt < '1999-02-06';

SET LANGUAGE ENGLISH

GO

INSERT INTO T
VALUES     ( DATEADD(DAY,5,'1999-01-01')); --6th Jan

GO

SET LANGUAGE RUSSIAN

INSERT INTO T
VALUES     ( DATEADD(DAY,5,'1999-01-01')); --Still 6th Jan

GO

SET LANGUAGE ENGLISH

GO

SELECT *
FROM   T

返回两行 - 都具有相同的日期

+-------------------------+
|           dt            |
+-------------------------+
| 1999-01-06 00:00:00.000 |
| 1999-01-06 00:00:00.000 |
+-------------------------+

但

SET LANGUAGE ENGLISH

GO

SELECT *
FROM   T
WHERE  dt >= '1999-01-06'
       AND dt < '1999-02-06';

使用过滤后的索引并只返回其中之一

+-------------------------+
|           dt            |
+-------------------------+
| 1999-01-06 00:00:00.000 |
+-------------------------+

此时运行DBCC CHECKTABLE (T) WITH EXTENDED_LOGICAL_CHECKS对于任何一种语言都会失败。

Msg 8951, Level 16, State 1, Line 4
Table error: table 'T' (ID 1045578763). Data row does not have a matching index row in the index 'IXF__test_of_filtered_idx__dt' (ID 2). Possible missing or invalid keys for the index row matching:
Msg 8955, Level 16, State 1, Line 4
Data row (4:24:1) identified by (HEAP RID = (4:24:1)) with index values 'dt = '1999-01-06 00:00:00.000' and HEAP RID = (4:24:1)'.
DBCC results for 'T'.
There are 2 rows in 1 pages for object "T".
CHECKTABLE found 0 allocation errors and 1 consistency errors in table 'T' (object ID 1045578763).
repair_rebuild is the minimum repair level for the errors found by DBCC CHECKTABLE (tempdb.dbo.T).
DBCC execution completed. If DBCC printed error messages, contact your system administrator.