Github user DaveBirdsall commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/577#discussion_r70505167
--- Diff: core/sql/parser/sqlparser.y ---
@@ -7001,6 +7036,46 @@ rel_subquery_and_as_clause : rel_subquery as_clause
$$ = $2;
}
+with_clause_list : with_clause
+ { $$ = $1 ; }
+
+ | with_clause_list ',' correlation_name TOK_AS
rel_subquery
--- End diff --
One way would be:
with_clause : WITH with_clause_elements
with_clause_elements : with_clause element
|
with_clause_elements
with_clause_element
with_clause_element : correlation_name TOK_AS rel_subquery
By the way, I notice the way this is coded, the "with_clause" non-terminal
is a single correlation_name TOK_AS rel_subquery element. It seems more natural
(to me anyway) to think of the with_clause as being everything from the WITH
keyword through the entire list of subqueries.
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