Updated for SML/NJ 110.46

[hcoop/smlsql.git] / sql_driver.sig

diff --git a/sql_driver.sig b/sql_driver.sig
index c96fbdb..350b47e 100644 (file)
--- a/sql_driver.sig
+++ b/sql_driver.sig
@@ -40,6 +40,7 @@ sig
     exception Format of string
 
     (* Conversions between SML values and their string representations from SQL queries *)
+    val isNull : string -> bool
     val intToSql : int -> string
     val intFromSql : string -> int
     val stringToSql : string -> string