查询优化有关问题

Create Table Clearing(  cNumber              char(14)             NOT NULL,--主键  eNumber              char(14)             NOT NULL,  cPriceTot            money                NOT NULL,  cTPrice              money                NOT NULL,  cRPrice              money                NOT NULL,  cAPrice              money                NOT NULL,  cUPrice              money                NOT NULL,  InvoiceId            bigint               NULL,  PieceworkId          bigint               NULL,  cInput               varchar(60)          NOT NULL,  cInputTime           datetime             NOT NULL,  cOPrice              money                NOT NULL,  cVPrice              money                NOT NULL)Create Table Entrust(  eId                  bigint               IDENTITY,--主键  clientNumber         varchar(18)          NOT NULL,  clientName           nvarchar(80)         NOT NULL,  clientSalesman       varchar(60)          NULL,  eNumber              char(14)             NULL,  ePrincipal           varchar(100)         NULL,  ePhone               varchar(100)         NULL,  eSend                bit                  NOT NULL,  eUrgent              bit                  NOT NULL,  eSendAddress         varchar(80)          NULL,  eReceive             varchar(60)          NULL,  eClaimFinishTime     varchar(30)          NULL,  eClaim               varchar(-1)          NULL,  eItemName            nvarchar(80)         NULL,  eState               char(1)              NOT NULL DEFAULT ('N'),  eCurrentFlow         nvarchar(200)        NULL,  eInput               varchar(60)          NULL,  eInputTime           datetime             NOT NULL DEFAULT (getdate()),  eLog                 varchar(-1)          NULL)Create Table Entrust_State(  State                char(1)              NULL,  StateText            varchar(20)          NULL)

CREATE VIEW [dbo].[v_Clearing]ASSELECT    dbo.Entrust.clientNumber, dbo.Entrust.clientName, dbo.Entrust.clientSalesman, dbo.Clearing.eNumber, dbo.Entrust.ePrincipal, dbo.Entrust.eSend,         dbo.Entrust.eUrgent, dbo.Entrust.eSendAddress, dbo.Entrust.ePhone, dbo.Entrust.eReceive, dbo.Entrust.eClaimFinishTime, dbo.Entrust.eClaim,         dbo.Entrust.eItemName, dbo.Entrust.eState, dbo.Entrust.eCurrentFlow, dbo.Entrust.eInput, dbo.Entrust.eInputTime, dbo.Entrust.eLog, dbo.Clearing.cNumber,         dbo.Clearing.cPriceTot, dbo.Clearing.cOPrice, dbo.Clearing.cRPrice, dbo.Clearing.cTPrice, dbo.Clearing.cVPrice, dbo.Clearing.cAPrice, dbo.Clearing.cUPrice,         dbo.Clearing.cInput, dbo.Clearing.cInputTime, dbo.Clearing.InvoiceId, dbo.Clearing.PieceworkId, dbo.Entrust_State.StateTextFROM    dbo.Clearing INNER JOIN        dbo.Entrust ON dbo.Clearing.eNumber = dbo.Entrust.eNumber INNER JOIN        dbo.Entrust_State ON dbo.Entrust.eState = dbo.Entrust_State.State

select StateText,cNumber,clientName,eItemName,cPriceTot,cOPrice,cRPrice,cTPrice,(cRprice+cTprice) as validPrice,cAPrice,cUPrice,InvoiceId,PieceworkId,cInput,cInputTime from [v_Clearing] where eState in ('S','P','F') andclientNumber = 'KD0211400001' and (cInputTime between '2012-06-01' and '2012-06-19')order by cNumber desc

select StateText,cNumber,clientName,eItemName,cPriceTot,cOPrice,cRPrice,cTPrice,(cRprice+cTprice) as validPrice,cAPrice,cUPrice,InvoiceId,PieceworkId,cInput,cInputTime from(select * from dbo.Entrust_State) as ts,(select * from dbo.Entrust where eState in ('S','P','F') and clientNumber = 'KD0211400001' ) as te,(select * from dbo.Clearing where cInputTime >= '2012-06-01') as tcwhere ts.state=te.eState and te.eNumber=tc.eNumber