9.5.2: "sql" as reserved word?

Hello,

 

This query is working in 9.4.x, but not in 9.5.2:

 

select 'x' sql;

 

ERROR:  syntax error at or near "sql"

LINE 1: select 'x' sql;

 

 

Is this expected or a known issue?

I could neither find any hint about it in the incompatibility list of the 9.5 release notes,

nor is "sql" listed as reserved keyword.

 

 

 

best regards,

 

Marc Mamin