分页存储过程

精确查询： 

       
CREATE PROCEDURE
FindCosInfo 
( 
   
@CosID varchar (10),        
//课程编号 
    @CosName  varchar
(20),   //课程名称 
   
@CosCredit 
int                    
//课程学分 
) 
AS 
declare
@sql varchar (1000) 
begin 
  set
@sql=‘select * from tb_Course ‘ 
  if 
@CosID!=‘‘ 
   
begin 
      set @[email protected]+‘ where
CosID= ‘+cast( @CosID as varchar) 
   
end 
  if (@CosName!= ‘‘ and
@CosID!=‘‘) 
   
begin 
      set
@[email protected]+‘and‘+‘  CosName=  ‘+cast (@CosName as varchar
) 
    end 
 
else 
    if (@CosName!=‘‘ and @CosID
=‘‘) 
     
begin 
        set
@[email protected]+‘where ‘+‘  CosName=  ‘+cast (@CosName as varchar
) 
     
end 
  if @CosCredit!= ‘‘ and (@CosID!=‘‘ or
@CosName!=‘‘) 
   
begin 
      set @[email protected]+‘
and  CosCredit=  ‘+cast (@CosCredit as varchar
) 
    end 
 
else 
    if @CosCredit!=‘‘ and @CosID=‘‘and
@CosName=‘‘ 
      set
@[email protected]+‘where CosCredit= ‘+cast (@CosCredit as varchar
) 
  exec
(@sql) 
end 
GO 

   
下面是模糊查询代码： 

          
CREATE PROCEDURE
FindCosDarkInfo 
( 
   
@CosID varchar (10), 
    @CosName 
varchar (20), 
    @CosCredit 
int 
) 
AS 
declare
@sql varchar (1000) 
begin 
  set
@sql=‘select * from tb_Course ‘ 
  if 
@CosID!=‘‘ 
   
begin 
      set @[email protected]+‘ where
CosID like‘+‘‘‘‘+‘%‘+cast( @CosID as varchar)+‘%‘+‘‘‘‘ 
//注意后面的这四个单引 

                                                                                                                                   
//号是用来代表一个‘ 
   
end 
  if (@CosName!= ‘‘ and
@CosID!=‘‘) 
   
begin 
      set
@[email protected]+‘and‘+‘  CosName like  ‘+‘‘‘‘+‘%‘+cast (@CosName as varchar
)+‘%‘+‘‘‘‘ 
   
end 
  else 
   
if (@CosName!=‘‘ and @CosID
=‘‘) 
     
begin 
        set
@[email protected]+‘where ‘+‘  CosName like  ‘+‘‘‘‘+‘%‘+cast (@CosName as
varchar )+‘%‘+‘‘‘‘ 
     
end 
  if @CosCredit!= ‘‘ and (@CosID!=‘‘ or
@CosName!=‘‘) 
   
begin 
      set @[email protected]+‘
and  CosCredit like  ‘+‘‘‘‘+‘%‘+cast (@CosCredit as varchar
)+‘%‘+‘‘‘‘ 
   
end 
  else 
   
if @CosCredit!=‘‘ and @CosID=‘‘and
@CosName=‘‘ 
      set
@[email protected]+‘where CosCredit like ‘+‘‘‘‘+‘%‘+cast (@CosCredit as varchar
)+‘%‘+‘‘‘‘ 
  exec
(@sql) 
end 

GO

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