[O]SQL SERVER下有序GUID和无序GUID作为主键&聚集索引的性能表现

一、插入无序GUID数据

 1 --创建表并插入无序GUID数据
 2 --DROP TABLE T_PROORDERTYPEGUIDTEST;
 3 create table T_PROORDERTYPEGUIDTEST (
 4    FENTRYID             varchar(36)          not null default ‘ ‘,
 5    FPROORDERENTRYID     int                  not null default 0,
 6    FPROORDERTYPE        varchar(20)          not null default ‘ ‘,
 7    FFORMID              varchar(36)          not null default ‘ ‘,
 8    FNUMBER              nvarchar(160)        not null default ‘ ‘,
 9    FCREATEORGID         int                  not null default 0,
10    FUSEORGID            int                  not null default 0,
11    FDOCUMENTSTATUS      char(1)              not null default ‘C‘,
12    FFORBIDSTATUS        char(1)              not null default ‘A‘,
13    FDATE                datetime             not null default getdate(),
14    FMATERIALID          int                  not null default 0,
15    FBOMID               int                  not null default 0,
16    FAUXPROPID           int                  not null default 0,
17    FLOT                 int                  not null default 0,
18    FMtoNo               nvarchar(200)        not null default ‘‘,
19    FSEQ                 int                  not null default 0,
20    FUNITID              int                  not null default 0,
21    FPRODUCTID           int                  not null default 0,
22    FWORKSHOPID          int                  not null default 0,
23    FCOSTCENTERID        int                  not null default 0,
24    constraint PK_PROORDERTYPE primary key (FENTRYID)
25 )
26 --插入500000条数据
27 declare @i int
28 set @i = 1
29 while @i < 500000
30 begin
31 INSERT INTO T_PROORDERTYPEGUIDTEST(FENTRYID,FPROORDERENTRYID,FPROORDERTYPE,FFORMID,FNUMBER,FCREATEORGID,
32 FUSEORGID,FDOCUMENTSTATUS,FFORBIDSTATUS,FDATE,FMATERIALID,FBOMID,FAUXPROPID,FLOT,
33 FSEQ,FUNITID,FPRODUCTID,FWORKSHOPID,FCOSTCENTERID) values
34 (NEWID(),@i,‘PO‘,‘FORM_OUTSRCPROORDER‘,‘TEST00001‘,@i,@i,‘C‘,‘A‘,GETDATE(),@i,@i,@i,@i,@i,@i,@i,@i,@i)
35 SET @i=@i+1
36 end ;
37
38 select COUNT(1) from T_PROORDERTYPEGUIDTEST

二、插入有序GUID数据

 1 --创建表并插入有序GUID数据
 2 DROP TABLE T_PROORDERTYPESEQGUIDTEST;
 3 create table T_PROORDERTYPESEQGUIDTEST (
 4    FENTRYID             uniqueidentifier     not null default (NEWSEQUENTIALID()),
 5    FPROORDERENTRYID     int                  not null default 0,
 6    FPROORDERTYPE        varchar(20)          not null default ‘ ‘,
 7    FFORMID              varchar(36)          not null default ‘ ‘,
 8    FNUMBER              nvarchar(160)        not null default ‘ ‘,
 9    FCREATEORGID         int                  not null default 0,
10    FUSEORGID            int                  not null default 0,
11    FDOCUMENTSTATUS      char(1)              not null default ‘C‘,
12    FFORBIDSTATUS        char(1)              not null default ‘A‘,
13    FDATE                datetime             not null default getdate(),
14    FMATERIALID          int                  not null default 0,
15    FBOMID               int                  not null default 0,
16    FAUXPROPID           int                  not null default 0,
17    FLOT                 int                  not null default 0,
18    FMtoNo               nvarchar(200)        not null default ‘‘,
19    FSEQ                 int                  not null default 0,
20    FUNITID              int                  not null default 0,
21    FPRODUCTID           int                  not null default 0,
22    FWORKSHOPID          int                  not null default 0,
23    FCOSTCENTERID        int                  not null default 0,
24    constraint PK_SEQPROORDERTYPE primary key (FENTRYID)
25 )
26 --插入500000条数据
27 declare @i int
28 set @i = 1
29 while @i < 500000
30 begin
31 INSERT INTO T_PROORDERTYPESEQGUIDTEST(FPROORDERENTRYID,FPROORDERTYPE,FFORMID,FNUMBER,FCREATEORGID,
32 FUSEORGID,FDOCUMENTSTATUS,FFORBIDSTATUS,FDATE,FMATERIALID,FBOMID,FAUXPROPID,FLOT,
33 FSEQ,FUNITID,FPRODUCTID,FWORKSHOPID,FCOSTCENTERID) values
34 (@i,‘PO‘,‘FORM_OUTSRCPROORDER‘,‘TEST00001‘,@i,@i,‘C‘,‘A‘,GETDATE(),@i,@i,@i,@i,@i,@i,@i,@i,@i)
35 SET @i=@i+1
36 end ;
37
38 select COUNT(1) from T_PROORDERTYPESEQGUIDTEST

三、分析索引碎片

1 --分析索引碎片
2 declare @table_id int
3 set @table_id=object_id(‘T_PROORDERTYPEGUIDTEST‘)
4 dbcc showcontig(@table_id);

DBCC SHOWCONTIG 正在扫描 ‘T_PROORDERTYPEGUIDTEST‘ 表...
表: ‘T_PROORDERTYPEGUIDTEST‘ (410536596)；索引 ID: 1，数据库 ID: 8
已执行 TABLE 级别的扫描。
- 扫描页数................................: 13933
- 扫描区数..............................: 1759
- 区切换次数..............................: 13932
- 每个区的平均页数........................: 7.9
- 扫描密度 [最佳计数:实际计数].......: 12.50% [1742:13933]
- 逻辑扫描碎片 ..................: 99.22%
- 区扫描碎片 ..................: 0.11%
- 每页的平均可用字节数.....................: 2569.6
- 平均页密度(满).....................: 68.25%
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。

1 declare @table_id int
2 set @table_id=object_id(‘T_PROORDERTYPESEQGUIDTEST‘)
3 dbcc showcontig(@table_id) 

DBCC SHOWCONTIG 正在扫描 ‘T_PROORDERTYPESEQGUIDTEST‘ 表...
表: ‘T_PROORDERTYPESEQGUIDTEST‘ (1114539104)；索引 ID: 1，数据库 ID: 8
已执行 TABLE 级别的扫描。
- 扫描页数................................: 8197
- 扫描区数..............................: 1033
- 区切换次数..............................: 1032
- 每个区的平均页数........................: 7.9
- 扫描密度 [最佳计数:实际计数].......: 99.23% [1025:1033]
- 逻辑扫描碎片 ..................: 0.67%
- 区扫描碎片 ..................: 0.10%
- 每页的平均可用字节数.....................: 44.3
- 平均页密度(满).....................: 99.45%
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。