Tom Lane 2415ad9831 Teach tuplestore.c to throw away data before the "mark" point when the caller ... is using mark/restore but not rewind or backward-scan capability. Insert a materialize plan node between a mergejoin and its inner child if the inner child is a sort that is expected to spill to disk. The materialize shields the sort from the need to do mark/restore and thereby allows it to perform its final merge pass on-the-fly; while the materialize itself is normally cheap since it won't spill to disk unless the number of tuples with equal key values exceeds work_mem. Greg Stark, with some kibitzing from Tom Lane.		2007-05-21 17:57:35 +00:00
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logtape.c	Update CVS HEAD for 2007 copyright. Back branches are typically not	2007-01-05 22:20:05 +00:00
Makefile	Remove remains of old depend target.	2007-01-20 17:16:17 +00:00
tuplesort.c	Add a line to the EXPLAIN ANALYZE output for a Sort node, showing the	2007-05-04 21:29:53 +00:00
tuplestore.c	Teach tuplestore.c to throw away data before the "mark" point when the caller	2007-05-21 17:57:35 +00:00