XML pre-defined entity

An error occurs when tsql reads some specific characters in XML. in XML, some pay-as-you-go entities are used:

The following are five pre-defined entities in the XML document: 

& Lt; <Yu no. 
& Gt;> greater 
& Amp; & and 
& Apos; 'single quotes 
& Quot; "Double quotation marks 

The object must start with the symbol "&" and end with the symbol. 
Note: Only the "<" and "&" characters are strictly forbidden for XML. The rest are legal. It is a good habit to use entities to reduce errors.

XML pre-defined entity