00.索引-综述

Posted 2020-08-17 ywnwa417

初始化

 

--1.创建数据库

IF DB_ID(‘IndexDB‘)IS NULL

BEGIN

       CREATE DATABASE [IndexDB]

END

ALTER DATABASE [IndexDB] SET RECOVERY SIMPLE;

GO

--2.创建表

----2.1 数据表

CREATE TABLE Employee001(

   Id NVARCHAR(32) NOT NULL,

   Name NVARCHAR(40) NOT NULL, 

   Department NVARCHAR(40) NULL,

   Organization NVARCHAR(40) NOT NULL,

   Company NVARCHAR(40) NOT NULL

)

----2.2 DBCC命令 DBCC IND(IndexDB,Employee001,-1) 执行结果存储,方便查询

CREATE TABLE DBCCIndResult(

  PageFID TINYINT,

  PagePID INT,

  IAMFID TINYINT,

  IAMPID INT,

  ObjectID INT,

  IndexID TINYINT,

  PartitionNumber TINYINT,

  PartitionID BIGINT,

  iam_chain_type VARCHAR(30), 

  PageType TINYINT,

  IndexLevel TINYINT,

  NextPageFID TINYINT,

  NextPagePID INT,

  PrevPageFID INT,

  PrevPagePID int,

  PRIMARY KEY (PageFID, PagePID)

)

----2.3 DBCC Page结果存储 存储 DBCC PAGE(PCT,1,807, 3) WITH TABLERESULTS 执行结果 方便查询

CREATE TABLE DBCCPageResult(

    ParentObject NVARCHAR(200),

    Object NVARCHAR(200),

    Field NVARCHAR(200),

    Value NVARCHAR(200)

)

--3.插入数据

DECLARE @i int;

SET @i=0;

WHILE @i<100000

BEGIN

INSERT INTO Employee001 VALUES(

REPLACE(NEWID(),‘-‘,‘‘),

‘Emp‘+CONVERT(nvarchar,@i),

‘Dep‘+CONVERT(nvarchar,@i%1000),

‘Org‘+CONVERT(nvarchar,@i%100),

‘Cmp‘+CONVERT(nvarchar,@i%10))

SET @i=@i+1;

END