Performance improvements to the external merge-sorter. Keep content on an

in-memory linked lists rather than an ephemeral table prior to spilling to disk. Use the external merge-sorter to implement ORDER BY and GROUP BY in addition to CREATE INDEX. FossilOrigin-Name: 4c43e8b2d2c1d8dcba3cd1c3f2ec4e19ab419430
2011-09-03 17:07:26 +00:00
parent 9747a6063b 04a962fe02
commit d40807ddef
17 changed files with 560 additions and 296 deletions
@@ -270,7 +270,7 @@ ifcapable {explain} {
      CREATE UNIQUE INDEX ex1i1 ON ex1(a);
      EXPLAIN REINDEX;
    }]
-    regexp { IsUnique \d+ \d+ \d+ \d+ } $x
+    regexp { SorterCompare \d+ \d+ \d+ } $x
  } {1}
  if {[regexp {16} [db one {PRAGMA encoding}]]} {
    do_test misc3-6.11-utf16 {