Rename a parse node to be more general

A WHERE clause will be used for row filtering in logical replication.
We already have a similar node: 'WHERE (condition here)'.  Let's
rename the node to a generic name and use it for row filtering too.

Author: Euler Taveira <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/CAHE3wggb715X+mK_DitLXF25B=jE6xyNCH4YOwM860JR7HarGQ@mail.gmail.com

diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index bc43641ffe02f25b9e06020d522b472f046a8b77..22bbb2704142c214d53914319d2dd36aa8bb8fab 100644 (file)
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -495,7 +495,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
 %type <node>   def_arg columnElem where_clause where_or_current_clause
                a_expr b_expr c_expr AexprConst indirection_el opt_slice_bound
                columnref in_expr having_clause func_table xmltable array_expr
-               ExclusionWhereClause operator_def_arg
+               OptWhereClause operator_def_arg
 %type <list>   rowsfrom_item rowsfrom_list opt_col_def_list
 %type <boolean> opt_ordinality
 %type <list>   ExclusionConstraintList ExclusionConstraintElem
@@ -3837,7 +3837,7 @@ ConstraintElem:
                    $$ = (Node *)n;
                }
            | EXCLUDE access_method_clause '(' ExclusionConstraintList ')'
-               opt_c_include opt_definition OptConsTableSpace  ExclusionWhereClause
+               opt_c_include opt_definition OptConsTableSpace  OptWhereClause
                ConstraintAttributeSpec
                {
                    Constraint *n = makeNode(Constraint);
@@ -3939,7 +3939,7 @@ ExclusionConstraintElem: index_elem WITH any_operator
            }
        ;
 
-ExclusionWhereClause:
+OptWhereClause:
            WHERE '(' a_expr ')'                    { $$ = $3; }
            | /*EMPTY*/                             { $$ = NULL; }
        ;