Index: src/main/org/h2/expression/Function.java
===================================================================
--- src/main/org/h2/expression/Function.java	(revision 4195)
+++ src/main/org/h2/expression/Function.java	(working copy)
@@ -201,6 +201,8 @@
         addFunction("TAN", TAN, 1, Value.DOUBLE);
         addFunction("TANH", TANH, 1, Value.DOUBLE);
         addFunction("TRUNCATE", TRUNCATE, 2, Value.DOUBLE);
+        // same as TRUNCATE
+        addFunction("TRUNC", TRUNCATE, 2, Value.DOUBLE);
         addFunction("HASH", HASH, 3, Value.BYTES);
         addFunction("ENCRYPT", ENCRYPT, 3, Value.BYTES);
         addFunction("DECRYPT", DECRYPT, 3, Value.BYTES);