diff --git a/sql/let.go b/sql/let.go
index 586bc98f..bdf11321 100644
--- a/sql/let.go
+++ b/sql/let.go
@@ -14,6 +14,8 @@
 
 package sql
 
+import "time"
+
 func (p *parser) parseLetStatement() (stmt *LetStatement, err error) {
 
 	stmt = &LetStatement{}
@@ -58,6 +60,8 @@ func (p *parser) parseLetStatement() (stmt *LetStatement, err error) {
 		p.v[stmt.Name] = stmt.What
 	case []interface{}, map[string]interface{}:
 		p.v[stmt.Name] = stmt.What
+	case time.Time, time.Duration:
+		p.v[stmt.Name] = stmt.What
 	case *Null, *Void, *Empty, *Table, *Thing, *Param:
 		p.v[stmt.Name] = stmt.What
 	}