database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-02 09:02:37 +03:00
Code Activity

Extend the set of frame options supported for window functions.

Browse Source 
This patch allows the frame to start from CURRENT ROW (in either RANGE or
ROWS mode), and it also adds support for ROWS n PRECEDING and ROWS n FOLLOWING
start and end points.  (RANGE value PRECEDING/FOLLOWING isn't there yet ---
the grammar works, but that's all.)

Hitoshi Harada, reviewed by Pavel Stehule
This commit is contained in:
Tom Lane
2010-02-12 17:33:21 +00:00
parent a5348fafd1
commit ec4be2ee68
28 changed files with 1237 additions and 254 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/backend/nodes/copyfuncs.c
View File

@ -15,7 +15,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.460 2010/01/28 23:21:11 petere Exp $
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.461 2010/02/12 17:33:20 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -718,6 +718,8 @@ _copyWindowAgg(WindowAgg *from)
COPY_POINTER_FIELD(ordOperators, from->ordNumCols * sizeof(Oid));
}
COPY_SCALAR_FIELD(frameOptions);
COPY_NODE_FIELD(startOffset);
COPY_NODE_FIELD(endOffset);
return newnode;
}
@ -1848,6 +1850,8 @@ _copyWindowClause(WindowClause *from)
COPY_NODE_FIELD(partitionClause);
COPY_NODE_FIELD(orderClause);
COPY_SCALAR_FIELD(frameOptions);
COPY_NODE_FIELD(startOffset);
COPY_NODE_FIELD(endOffset);
COPY_SCALAR_FIELD(winref);
COPY_SCALAR_FIELD(copiedOrder);
@ -2076,6 +2080,8 @@ _copyWindowDef(WindowDef *from)
COPY_NODE_FIELD(partitionClause);
COPY_NODE_FIELD(orderClause);
COPY_SCALAR_FIELD(frameOptions);
COPY_NODE_FIELD(startOffset);
COPY_NODE_FIELD(endOffset);
COPY_LOCATION_FIELD(location);
return newnode;