插入的时候报AS附近语法异常

插入的时候报AS附近语法错误
--CREATE   PROCEDURE     PROC_SetRouitngInfo
DECLARE   @FeederRoutingID   UNIQUEIDENTIFIER
DECLARE @ContractID                     UNIQUEIDENTIFIER
DECLARE @OnlineRoutingID   UNIQUEIDENTIFIER
DECLARE @InterlineRoutingID UNIQUEIDENTIFIER
DECLARE @FeederFareID UNIQUEIDENTIFIER
DECLARE @InterlineFareID UNIQUEIDENTIFIER
DECLARE @OnlineFareID UNIQUEIDENTIFIER
DECLARE @DateFrom DATETIME
DECLARE @DateTo DATETIME
DECLARE @IsRoundTrip TINYINT
DECLARE   @Airline NVARCHAR(100)

BEGIN  

--   判断@FeederDep和@Destination是否是zone和Airport
--   1，@FeederDep和@Destination同时为zone
IF   charindex( '_ ',@FeederDep)> 0     AND   charindex( '_ ',@Destination)> 0
BEGIN

EXEC     (

'SELECT   t1.a   as   Departure,t2.a   as   Destination, '+
@FeederRoutingID   +   ', '   +  
@OnlineRoutingID+   ', '   +  
@InterlineRoutingID+   ', '   +  
@FeederFareID+   ', '   +  
@OnlineFareID+   ', '   +  
@InterlineFareID+   ', '   +  
@ContractID+   ', '   +  
@DateFrom+   ', '   +  
@DateTo+   ', '   +  
@IsRoundTrip+   ', '+
@Airline   +   '   INTO   '   +   @Airline   +    

'FROM  
(
select   airportcode   As   a   from  
(select   *   from   zone   where   zoneNo= ' ' '   +   @FeederDep   +   ' ' ')Z
INNER   JOIN   ZoneElement   ZE   ON   Z.zoneID=ZE.zoneID
INNER   JOIN   MST_AirPort   A   ON   A.AirPortID=ZE.AirPortID  
)   AS   t1
CROSS   JOIN
( select   airportcode   As   a   from  
(select   *   from   zone   where   zoneNo= ' ' '   +   @Destination   +   ' ' ')Z
INNER   JOIN   ZoneElement   ZE   ON   Z.zoneID=ZE.zoneID
INNER   JOIN   MST_AirPort   A   ON   A.AirPortID=ZE.AirPortID  
)   AS   t2
ORDER   BY   Departure,Destination ')
END
END




------解决方案--------------------
把动态的sql语句print出来看看！