Index: res/res_odbc.c
===================================================================
--- res/res_odbc.c	(revision 219816)
+++ res/res_odbc.c	(working copy)
@@ -431,6 +431,12 @@
 	SQLHSTMT stmt = NULL;
 	int res = 0, error = 0, try = 0;
 	struct odbc_obj *obj = ast_odbc_request_obj(database, 0);
+	char *ptr;
+	AST_DECLARE_APP_ARGS(tbl,
+		AST_APP_ARG(catalog);
+		AST_APP_ARG(schema);
+		AST_APP_ARG(table);
+	);
 
 	AST_RWLIST_RDLOCK(&odbc_tables);
 	AST_RWLIST_TRAVERSE(&odbc_tables, tableptr, list) {
@@ -453,6 +459,25 @@
 		return NULL;
 	}
 
+	if (strchr(tablename, '.')) {
+		if (!(ptr = ast_strdupa(tablename))) {
+			AST_RWLIST_UNLOCK(&odbc_tables);
+			return NULL;
+		}
+
+		AST_NONSTANDARD_APP_ARGS(tbl, ptr, '.');
+
+		if (tbl.argc == 2) {
+			tbl.table = tbl.schema;
+			tbl.schema = tbl.catalog;
+			tbl.catalog = NULL;
+		}
+	} else {
+		tbl.catalog = NULL;
+		tbl.schema = NULL;
+		tbl.table = ast_strdupa(tablename);
+	}
+
 	/* Table structure not already cached; build it now. */
 	do {
 		res = SQLAllocHandle(SQL_HANDLE_STMT, obj->con, &stmt);
@@ -466,7 +491,11 @@
 			break;
 		}
 
-		res = SQLColumns(stmt, NULL, 0, NULL, 0, (unsigned char *)tablename, SQL_NTS, (unsigned char *)"%", SQL_NTS);
+		res = SQLColumns(stmt,
+				(unsigned char *) tbl.catalog, tbl.catalog ? SQL_NTS : 0,
+				(unsigned char *) tbl.schema, tbl.schema ? SQL_NTS : 0,
+				(unsigned char *) tbl.table, SQL_NTS,
+				(unsigned char *)"%", SQL_NTS);
 		if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 			if (try == 0) {
 				try = 1;