tee.F_EndDay <= dateadd(DAY,0,CONVERT (VARCHAR(100), GETDATE(), 23))
 1, will be < Number or & gt; The number is escaped
tee.F_EndDay &lt;= dateadd(DAY,0,CONVERT (VARCHAR(100), GETDATE(), 23))
2. Use lt; ! [CDATA[ ]]> Symbol description
<![CDATA[ tee.F_EndDay &lt;= dateadd(DAY,0,CONVERT (VARCHAR(100), GETDATE(), 23)) ]]>  

Appendix escape comparison table
The 



 & amp; lt;  

 & lt; No.  

 <  


 & amp; gt;  

 & gt;  

 is greater than the number   


 & amp; amp;  

 & amp;  

 and   


 & amp; apos;  

 “ 

 single quotes   


 & amp; quot;  

 “ 

 double quotation marks