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heap_fetch requires buffer pointer, must be released; heap_getnext

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no longer returns buffer pointer, can be gotten from scan;
	descriptor; bootstrap can create multi-key indexes;
pg_procname index now is multi-key index; oidint2, oidint4, oidname
are gone (must be removed from regression tests); use System Cache
rather than sequential scan in many places; heap_modifytuple no
longer takes buffer parameter; remove unused buffer parameter in
a few other functions; oid8 is not index-able; remove some use of
single-character variable names; cleanup Buffer variables usage
and scan descriptor looping; cleaned up allocation and freeing of
tuples; 18k lines of diff;
This commit is contained in:
Bruce Momjian
1998-08-19 02:04:17 +00:00
parent 31de2c9461
commit 7971539020
123 changed files with 2139 additions and 3134 deletions
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26
src/man/create_index.l
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@ -1,6 +1,6 @@
.\" This is -*-nroff-*-
.\" XXX standard disclaimer belongs here....
.\" $Header: /cvsroot/pgsql/src/man/Attic/create_index.l,v 1.11 1998/04/26 04:09:39 momjian Exp $
.\" $Header: /cvsroot/pgsql/src/man/Attic/create_index.l,v 1.12 1998/08/19 02:04:12 momjian Exp $
.TH "CREATE INDEX" SQL 11/05/95 PostgreSQL PostgreSQL
.SH NAME
create index - construct a secondary index
@ -149,21 +149,6 @@ btree |oid_ops |<=
btree |oid_ops |=
btree |oid_ops |>
btree |oid_ops |>=
btree |oidint2_ops|<
btree |oidint2_ops|<=
btree |oidint2_ops|=
btree |oidint2_ops|>
btree |oidint2_ops|>=
btree |oidint4_ops|<
btree |oidint4_ops|<=
btree |oidint4_ops|=
btree |oidint4_ops|>
btree |oidint4_ops|>=
btree |oidname_ops|<
btree |oidname_ops|<=
btree |oidname_ops|=
btree |oidname_ops|>
btree |oidname_ops|>=
btree |text_ops |<
btree |text_ops |<=
btree |text_ops |=
@ -226,15 +211,6 @@ Similarly,
support indices on int4 data that is to be compared against int2 data
in queries.
.PP
The operator classes
.IR oidint2_ops ,
.IR oidint4_ops ,
and
.IR oidname_ops
represent the use of
.IR "functional indices"
to simulate multi-key indices.
These are no longer needed now that multi-key indexes are supported.
.PP
The Postgres query optimizer will consider using btree indices in a scan
whenever an indexed attribute is involved in a comparison using one of: