From 003dc785340a37764925a1189b65aca52232899c Mon Sep 17 00:00:00 2001
From: jbranchaud <jbranchaud@gmail.com>
Date: Sun, 12 Jul 2015 16:27:34 -0500
Subject: [PATCH] Add Edit Existing Functions as a postgres til.

---
 README.md                           |  1 +
 postgres/edit-existing-functions.md | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 postgres/edit-existing-functions.md

diff --git a/README.md b/README.md
index 5405cbc..322a83f 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 - [Configure The Timezone](postgres/configure-the-timezone.md)
 - [Count Records By Type](postgres/count-records-by-type.md)
 - [Default Schema](postgres/default-schema.md)
+- [Edit Existing Functions](postgres/edit-existing-functions.md)
 - [Extracting Nested JSON Data](postgres/extracting-nested-json-data.md)
 - [Fizzbuzz With Common Table Expressions](postgres/fizzbuzz-with-common-table-expressions.md)
 - [Generate Series Of Numbers](postgres/generate-series-of-numbers.md)
diff --git a/postgres/edit-existing-functions.md b/postgres/edit-existing-functions.md
new file mode 100644
index 0000000..260a11b
--- /dev/null
+++ b/postgres/edit-existing-functions.md
@@ -0,0 +1,21 @@
+# Edit Existing Functions
+
+In the `psql` console, use `\ef` with the name of a function to fetch and
+open the definition of the function. The function will be opened in your
+system `$EDITOR` in the form of the `create or replace function` query.
+
+Executing
+
+```sql
+> \ef now
+```
+
+will open the following in your default editor
+
+```sql
+CREATE OR REPLACE FUNCTION pg_catalog.now()¬
+ RETURNS timestamp with time zone¬
+ LANGUAGE internal¬
+ STABLE STRICT¬
+AS $function$now$function$¬
+```