Updated README

Author: README-bot

README.md

@@ -4,7 +4,7 @@ My Today I Learned snippets. Inspired by [jbranchaud/til](https://github.com/jbr
 
 Search these TILs at https://til.simonwillison.net/
 
-<!-- count starts -->156<!-- count ends --> TILs so far. <a href="https://til.simonwillison.net/til/feed.atom">Atom feed here</a>.
+<!-- count starts -->157<!-- count ends --> TILs so far. <a href="https://til.simonwillison.net/til/feed.atom">Atom feed here</a>.
 
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 ## github-actions
@@ -294,4 +294,8 @@ Search these TILs at https://til.simonwillison.net/
 ## spatialite
 
 * [KNN queries with SpatiaLite](https://github.com/simonw/til/blob/main/spatialite/knn.md) - 2021-05-16
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+## sql
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+* [Finding duplicate records by matching name and nearby distance](https://github.com/simonw/til/blob/main/sql/finding-dupes-by-name-and-distance.md) - 2021-05-19
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