diff --git a/sources/tech/20170308 Many SQL Performance Problems Stem from  Unnecessary, Mandatory Work.md b/sources/tech/20170308 Many SQL Performance Problems Stem from  Unnecessary, Mandatory Work.md
index b48182f037..f17e7d2fd3 100644
--- a/sources/tech/20170308 Many SQL Performance Problems Stem from  Unnecessary, Mandatory Work.md	
+++ b/sources/tech/20170308 Many SQL Performance Problems Stem from  Unnecessary, Mandatory Work.md	
@@ -1,3 +1,5 @@
+translating by Flowsnow!
+
 Many SQL Performance Problems Stem from “Unnecessary, Mandatory Work”
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