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Add link for postgres multi-column indexes

Link to a discussion of the tradeoffs between combining multiple indexes vs using compound indexes.
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1 parent 74bd9ce commit 597819d3a503cf208dae32153f48ff7bf2cad615 @jasonm jasonm committed Oct 3, 2012
Showing with 2 additions and 2 deletions.
  1. +2 −2 best-practices/
4 best-practices/
@@ -46,8 +46,8 @@ Postgres
* Avoid multicolumn indexes in Postgres. It [combines multiple
- indexes]( efficiently. Optimize later with a compound
- index if needed.
+ indexes]( efficiently. Optimize later with a [compound
+ index if needed](
* Consider a [partial index]( for queries on booleans.
* Constrain most columns as [`NOT NULL`](

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