From 6695f37cbb95efa4fd787ccee2c25f09dd16d88e Mon Sep 17 00:00:00 2001
From: jbranchaud <jbranchaud@gmail.com>
Date: Sat, 9 May 2015 11:43:18 -0500
Subject: [PATCH] Add Word Count for a Column as a postgres til.

---
 README.md                           |  1 +
 postgres/word-count-for-a-column.md | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 postgres/word-count-for-a-column.md

diff --git a/README.md b/README.md
index ccd5d4d..9698dc8 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 
 - [Timestamp Functions](postgres/timestamp-functions.md)
 - [Turning Timing On](postgres/turning-timing-on.md)
+- [Word Count for a Column](postgres/word-count-for-a-column.md)
 
 ### rails
 
diff --git a/postgres/word-count-for-a-column.md b/postgres/word-count-for-a-column.md
new file mode 100644
index 0000000..11d0d9f
--- /dev/null
+++ b/postgres/word-count-for-a-column.md
@@ -0,0 +1,21 @@
+# Word Count for a Column
+
+Assuming I have a database with a posts table:
+
+```
+> select * from posts where id = 1;
+ id |  title   |              content               
+----+----------+------------------------------------
+  1 | My Title | This is the content of my article. 
+```
+
+I can compute the word count of the content of a given post like so:
+
+```
+> select sum(array_length(regexp_split_to_array(content, '\s+'), 1)) from posts where id = 1;
+ sum 
+-----
+   7 
+```
+
+[source](http://blog.lingohub.com/2013/07/sql-word-count-character-count-postgres/)