Cannot compare s-expressions and lists

[dlurton]

Description

PartiQL specification 12.2-7 states that the contents of ARRAY types (lists and s-expressions) should be compared lexicographically. I'm taking this to mean that a list and s-expresssion with the same contents should be equal--but PartiQL Kotlin doesn't implement this correctly.

7. Arrays come next, and their values compare lexicographically based on the comparison of their elements, recur-
   sively. Notice that given an array [e1, . . . , em] and a longer array [e1, . . . , em, em+1, . . . , en] that has the same
   first m values, the former array comes first.

But PartiQL-Kotlin doesn't seem to have this implemented correctly.

To Reproduce

PartiQL> SEXP(1) = [1]
   | 
===' 
false
--- 
OK!
PartiQL> SEXP(1) > [1]
   | 

Evaluator Error: at line 1, column 9: Invalid comparision, <UNKNOWN> : <UNKNOWN>
Cannot compare values: `(1)`, [1]
PartiQL> SEXP(1) < [1]
   | 

Evaluator Error: at line 1, column 9: Invalid comparision, <UNKNOWN> : <UNKNOWN>
Cannot compare values: `(1)`, [1]

Expected Behavior

PartiQL> SEXP(1) = [1]
   | 
===' 
true
--- 
OK!
PartiQL> SEXP(1) > [1]
   | 
===' 
false
--- 
OK!
PartiQL> SEXP(1) < [1]
   | 
===' 
false
--- 
OK!

Additional Context

The rest of the operators (i.e. >=, <=, !=) should be checked to make sure they work too.