diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2003-01-09 20:50:53 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2003-01-09 20:50:53 +0000 |
| commit | 6bc61fc046961cfc2b3901ab38ac74b45f8c6cd3 (patch) | |
| tree | a29a0825d52ba55e9971b8df6c4a530cc90a5bff /src/backend/nodes/copyfuncs.c | |
| parent | 59779c81ba9e6ea29cec1a59d0cfdbe76fa016ff (diff) | |
| download | postgresql-6bc61fc046961cfc2b3901ab38ac74b45f8c6cd3.tar.gz postgresql-6bc61fc046961cfc2b3901ab38ac74b45f8c6cd3.zip | |
Adjust parser so that 'x NOT IN (subselect)' is converted to
'NOT (x IN (subselect))', that is 'NOT (x = ANY (subselect))',
rather than 'x <> ALL (subselect)' as we formerly did. This
opens the door to optimizing NOT IN the same way as IN, whereas
there's no hope of optimizing the expression using <>. Also,
convert 'x <> ALL (subselect)' to the NOT(IN) style, so that
the optimization will be available when processing rules dumped
by older Postgres versions.
initdb forced due to small change in SubLink node representation.
Diffstat (limited to 'src/backend/nodes/copyfuncs.c')
| -rw-r--r-- | src/backend/nodes/copyfuncs.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/backend/nodes/copyfuncs.c b/src/backend/nodes/copyfuncs.c index c3abcfc9e80..4b326b75224 100644 --- a/src/backend/nodes/copyfuncs.c +++ b/src/backend/nodes/copyfuncs.c @@ -15,7 +15,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.233 2002/12/14 00:17:50 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.234 2003/01/09 20:50:50 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -809,7 +809,8 @@ _copySubLink(SubLink *from) SubLink *newnode = makeNode(SubLink); COPY_SCALAR_FIELD(subLinkType); - COPY_SCALAR_FIELD(useor); + COPY_SCALAR_FIELD(operIsEquals); + COPY_SCALAR_FIELD(useOr); COPY_NODE_FIELD(lefthand); COPY_NODE_FIELD(oper); COPY_NODE_FIELD(subselect); @@ -826,7 +827,7 @@ _copySubPlan(SubPlan *from) SubPlan *newnode = makeNode(SubPlan); COPY_SCALAR_FIELD(subLinkType); - COPY_SCALAR_FIELD(useor); + COPY_SCALAR_FIELD(useOr); COPY_NODE_FIELD(oper); COPY_NODE_FIELD(plan); COPY_SCALAR_FIELD(plan_id); |