Re: [PATCH] Keeps tracking the uniqueness with UniqueKey

Hi

I have a look over this patch and find some typos in 0002.

1.Some typos about unique:
There are some spelling mistakes about "unique" in code comments and README.
Such as: "+However we define the UnqiueKey as below."

2.function name about initililze_uniquecontext_for_joinrel:
May be it should be initialize_ uniquecontext_for_joinrel.

3.some typos in comment:
+                        * baserelation's basicrestrictinfo. so it must be in ON clauses.

I think it shoule be " basicrestrictinfo " => "baserestrictinfo".


Besides, I think list_copy can be used to simplify the following code.
(But It seems the type of expr is still in discussion, so this may has no impact )
+       List    *exprs = NIL;
...
+       foreach(lc, unionrel->reltarget->exprs)
+       {
+               exprs = lappend(exprs, lfirst(lc));
+       }

Best regards,