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First steps towards statistics on expressional (nee functional) indexes.

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This commit teaches ANALYZE to store such stats in pg_statistic, but
nothing is done yet about teaching the planner to use 'em.
Also, repair longstanding oversight in separate ANALYZE command: it
updated the pg_class.relpages and reltuples counts for the table proper,
but not for indexes.
This commit is contained in:
Tom Lane
2004-02-15 21:01:39 +00:00
parent 4b8f125973
commit f0c9397f80
7 changed files with 374 additions and 38 deletions
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7
src/include/commands/vacuum.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/commands/vacuum.h,v 1.50 2004/02/13 06:39:49 tgl Exp $
* $PostgreSQL: pgsql/src/include/commands/vacuum.h,v 1.51 2004/02/15 21:01:39 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -106,8 +106,11 @@ typedef struct VacAttrStats
* be looked at by type-specific functions.
*/
int tupattnum; /* attribute number within tuples */
HeapTuple *rows; /* access info for fetch function */
HeapTuple *rows; /* access info for std fetch function */
TupleDesc tupDesc;
Datum *exprvals; /* access info for index fetch function */
bool *exprnulls;
int rowstride;
} VacAttrStats;