Tom Lane [Sun, 25 Jul 1999 23:07:26 +0000 (23:07 +0000)]
Further work on planning of indexscans. Cleaned up interfaces
to index_selectivity so that it can be handed an indexqual clause list
rather than a bunch of assorted derivative data.
Tom Lane [Sun, 25 Jul 1999 17:53:27 +0000 (17:53 +0000)]
Remove 'restrictinfojoinid' field from RestrictInfo nodes.
The only place it was being used was as temporary storage in indxpath.c,
and the logic was wrong: the same restrictinfo node could get chosen to
carry the info for two different joins. Right fix is to return a second
list of unjoined-relids parallel to the list of clause groups.
Tom Lane [Sat, 24 Jul 1999 23:21:14 +0000 (23:21 +0000)]
Clean up messy clause-selectivity code in clausesel.c; repair bug
identified by Hiroshi (incorrect cost attributed to OR clauses
after multiple passes through set_rest_selec()). I think the code
was trying to allow selectivities of OR subclauses to be passed in
from outside, but noplace was actually passing any useful data, and
set_rest_selec() was passing wrong data.
Restructure representation of "indexqual" in IndexPath nodes so that
it is the same as for indxqual in completed IndexScan nodes: namely,
a toplevel list with an entry for each pass of the index scan, having
sublists that are implicitly-ANDed index qual conditions for that pass.
You don't want to know what the old representation was :-(
Improve documentation of OR-clause indexscan functions.
Remove useless 'notclause' field from RestrictInfo nodes. (This might
force an initdb for anyone who has stored rules containing RestrictInfos,
but I do not think that RestrictInfo ever appears in completed plans.)
Tom Lane [Fri, 23 Jul 1999 03:00:10 +0000 (03:00 +0000)]
Exit cleanups I made yesterday caused pq_close() to be
invoked during exit from a standalone backend, leading to core dump.
This is the cause of the recently reported initdb-time crash :-(.
Sorry folks...
Complete merge of all old man page information.
lisp.sgml is a placeholder for Eric Marsden's upcoming contribution.
catalogs.sgml is not yet marked up or integrated.
It should perhaps become an appendix.
Bruce Momjian [Tue, 20 Jul 1999 17:20:43 +0000 (17:20 +0000)]
While I was running some tests in psql, trying to figure out how to change
the query string to handle any length, I discovered that under certain
conditions, psql will core dump when handling long strings. Thus, the
patch. It was caused by a buffer overrun, probably not noticeable in a lot
of cases, but pretty noticeable in mine.
Problem was caused by the fact that the length check is only performed after
the check for a ; to get the end of the query and execute.
Tom Lane [Tue, 20 Jul 1999 00:18:01 +0000 (00:18 +0000)]
Complain about INSERT ... SELECT ... ORDER BY, which we do not
support, but which the grammar was accepting. Also, fix several bugs
having to do with failure to copy fields up from a subselect to a select
or insert node.
Tom Lane [Mon, 19 Jul 1999 00:26:20 +0000 (00:26 +0000)]
Rewrite parser's handling of INSERT ... SELECT so that processing
of the SELECT part of the statement is just like a plain SELECT. All
INSERT-specific processing happens after the SELECT parsing is done.
This eliminates many problems, e.g. INSERT ... SELECT ... GROUP BY using
the wrong column labels. Ensure that DEFAULT clauses are coerced to
the target column type, whether or not stored clause produces the right
type. Substantial cleanup of parser's array support.
Tom Lane [Fri, 16 Jul 1999 23:09:45 +0000 (23:09 +0000)]
Add back improperly removed #include for config.h.
This probably ought to be kept in *all* the port files, but these two
are the only ones that generated compiler warnings for me ...
Tom Lane [Fri, 16 Jul 1999 22:29:42 +0000 (22:29 +0000)]
Allow bare column names to be subscripted as arrays. This
creates a reduce/reduce conflict, which I resolved by changing the
'AexprConst -> Typename Sconst' rule to 'AexprConst -> SimpleTypename Sconst'.
In other words, a subscripted type declaration can't be used in that
syntax any longer. This seems a small price to pay for not having to
qualify subscripted columns anymore.
Other cleanups: rename res_target_list to update_target_list, and remove
productions for variants that are not legal in an UPDATE target list;
rename res_target_list2 to plain target_list; delete position_expr
in favor of using b_expr in that production; merge opt_indirection
into attr nonterminal, since there are no places where an unsubscripted
attr is wanted; fix typos in Param support; change case_arg so that
an arbitrary a_expr is allowed, not only a column name.
Tom Lane [Fri, 16 Jul 1999 22:17:06 +0000 (22:17 +0000)]
Revise _bt_binsrch() so that its binary search loop takes
care of equal-key cases, eliminating bt_firsteq(). The linear search
formerly done by bt_firsteq() took a lot of time in the case where many
equal keys appear on the same page.