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-rw-r--r--lib/ur/basis.urs2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/ur/basis.urs b/lib/ur/basis.urs
index c06482ed..6cd9915e 100644
--- a/lib/ur/basis.urs
+++ b/lib/ur/basis.urs
@@ -535,6 +535,8 @@ val query : tables ::: {{Type}} -> exps ::: {Type}
type dml
val dml : dml -> transaction unit
+val tryDml : dml -> transaction (option string)
+(* Returns an error message on failure. *)
val insert : fields ::: {Type} -> uniques ::: {{Unit}}
-> sql_table fields uniques