From 414c5a2ea65cbd38d79ffdf9b1fde7cc75c134e0 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut
Date: Tue, 8 Feb 2011 23:04:18 +0200
Subject: Per-column collation support

This adds collation support for columns and domains, a COLLATE clause
to override it per expression, and B-tree index support.

Peter Eisentraut
reviewed by Pavel Stehule, Itagaki Takahiro, Robert Haas, Noah Misch
---
 src/include/nodes/nodeFuncs.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/include/nodes/nodeFuncs.h')

diff --git a/src/include/nodes/nodeFuncs.h b/src/include/nodes/nodeFuncs.h
index 433fbfe857e..32f09f68ad1 100644
--- a/src/include/nodes/nodeFuncs.h
+++ b/src/include/nodes/nodeFuncs.h
@@ -27,6 +27,8 @@
 
 extern Oid	exprType(Node *expr);
 extern int32 exprTypmod(Node *expr);
+extern Oid	exprCollation(Node *expr);
+extern Oid coercion_expression_result_collation(Oid resulttype, Node *arg);
 extern bool exprIsLengthCoercion(Node *expr, int32 *coercedTypmod);
 extern bool expression_returns_set(Node *clause);
 
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