From dc04b6d07c9b8bacd05b1db8195f90e29fde2836 Mon Sep 17 00:00:00 2001
From: dimitr <dimitr@users.sourceforge.net>
Date: Sat, 22 Jan 2005 21:13:15 +0000
Subject: [PATCH] More docs.

---
 doc/sql.extensions/README.iif | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 doc/sql.extensions/README.iif

diff --git a/doc/sql.extensions/README.iif b/doc/sql.extensions/README.iif
new file mode 100644
index 0000000000..b566d40325
--- /dev/null
+++ b/doc/sql.extensions/README.iif
@@ -0,0 +1,20 @@
+--------------------
+IIF builtin function
+--------------------
+
+Function:
+    Return a value of the first sub-expression if the given search condition
+    evaluates to TRUE, otherwise return a value of the second sub-expression.
+
+Author:
+    Oleg Loa <loa@mail.ru>
+
+Format:
+    IIF ( <search condition>, <value expression>, <value expression> )
+
+Syntax Rule(s):
+    IIF (SC, V1, V2) is equivalent to the following <case specification>:
+         CASE WHEN SC THEN V1 ELSE V2 END
+
+Example(s):
+    SELECT IIF(VAL > 0, VAL, -VAL) FROM OPERATION