NewLifeX
diff --git a/‎XCode/DataAccessLayer/Common/DbSession.cs‎
Lines changed: 2 additions & 1 deletion b/‎XCode/DataAccessLayer/Common/DbSession.cs‎
Lines changed: 2 additions & 1 deletion
@@ -871,7 +871,8 @@ protected virtual void BuildDuplicateKey(StringBuilder sb, DbBase db, IDataColum
             }
             if (addColumns != null && addColumns.Count > 0)
             {
-                sb.Append(',');
+                // 如果前面 updateColumns 已写入内容，需要逗号分隔
+                if (updateColumns != null && updateColumns.Count > 0) sb.Append(',');
                 foreach (var dc in columns)
                 {
                     if (dc.Identity || dc.PrimaryKey) continue;
Original file line number	Diff line number	Diff line change
`@@ -871,7 +871,8 @@ protected virtual void BuildDuplicateKey(StringBuilder sb, DbBase db, IDataColum`
`871`	`871`	`}`
`872`	`872`	`if (addColumns != null && addColumns.Count > 0)`
`873`	`873`	`{`
`874`		`- sb.Append(',');`
	`874`	`+ // 如果前面 updateColumns 已写入内容，需要逗号分隔`
	`875`	`+ if (updateColumns != null && updateColumns.Count > 0) sb.Append(',');`
`875`	`876`	`foreach (var dc in columns)`
`876`	`877`	`{`
`877`	`878`	`if (dc.Identity \|\| dc.PrimaryKey) continue;`