MonetDB: window-tunning - Do less copying

[Pedro Ferreira]

Changeset: 1ac4576ae67f for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=1ac4576ae67f
Modified Files:
        sql/server/rel_select.c
Branch: window-tunning
Log Message:

Do less copying


diffs (27 lines):

diff --git a/sql/server/rel_select.c b/sql/server/rel_select.c
--- a/sql/server/rel_select.c
+++ b/sql/server/rel_select.c
@@ -4803,9 +4803,9 @@ rel_rankop(sql_query *query, sql_rel **r
 
        if (frame_clause || supports_frames) {
                if (frame_type == FRAME_RANGE)
-                       ie = exp_copy(sql, obe ? (sql_exp*) obe->t->data : in);
+                       ie = obe ? (sql_exp*) obe->t->data : in;
                else
-                       ie = exp_copy(sql, oe);
+                       ie = oe;
        }
 
        /* Frame */
@@ -4916,9 +4916,9 @@ rel_rankop(sql_query *query, sql_rel **r
                        list_append(args, start);
                        list_append(args, eend);
                } else if (frame_type == FRAME_UNBOUNDED_TILL_CURRENT_ROW || 
frame_type == FRAME_CURRENT_ROW_TILL_UNBOUNDED)
-                       list_append(args, exp_copy(sql, oe));
+                       list_append(args, oe);
                if (gbe && !is_value)
-                       list_append(args, exp_copy(sql, pe));
+                       list_append(args, start && eend ? exp_ref(sql, pe) : 
pe);
        }
        call = exp_rank_op(sql->sa, list_empty(args) ? NULL : args, gbe, obe, 
wf);
        if (call && !exp_name(call))
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