Using diff

[thebruuu]

Given two queries like the following
select A,B,C from Table where D=1 and E=4
select A,B,C from Table where D=2 and E=4

I would like to find a way to use diff to tell me : those two queries are identical as only constants make the difference between the 2 ...

How shoul dI proceed please?

[thebruuu]

I ended up this way:
for x in diff(ast,ast2):
if (type(x).name!="Keep") and (type(x).name!="Move"):
if(type(x.expression).name)!='Literal':
return "false"