From 1fd64e478a8cd06274e622f867fad311fffdaf32 Mon Sep 17 00:00:00 2001
From: jbranchaud <jbranchaud@gmail.com>
Date: Fri, 31 Jan 2025 14:34:53 -0600
Subject: [PATCH] Clarify some things in the latest TIL

---
 ...-leading-and-trailing-space-from-string.md | 20 ++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/postgres/trim-leading-and-trailing-space-from-string.md b/postgres/trim-leading-and-trailing-space-from-string.md
index 2cf6ef2..8bd6494 100644
--- a/postgres/trim-leading-and-trailing-space-from-string.md
+++ b/postgres/trim-leading-and-trailing-space-from-string.md
@@ -5,10 +5,20 @@ functions](https://www.postgresql.org/docs/current/functions-string.html),
 including several for doing various string trimming.
 
 We can use the simplest form of `trim` to remove leading and trailing space
-characters from a string. The syntax for calling `trim` is a bit odd relative
-to other PostgreSQL functions and functions in other languages.
+characters from a string.
 
-Here is the "grammar" as described in the docs:
+```sql
+> select trim('  Taco Cat ');
++----------+
+| btrim    |
+|----------|
+| Taco Cat |
++----------+
+```
+
+The syntax for calling `trim` is a bit odd relative to other PostgreSQL
+functions and functions in other languages. Here is the "grammar" as described
+in the docs:
 
 ```
 trim ( [ LEADING | TRAILING | BOTH ] [ characters text ] FROM string text ) → text
@@ -42,3 +52,7 @@ string:
 | aco Ca |
 +--------+
 ```
+
+Notice that in all the above examples the column name of the result is `btrim`.
+That's probably because `btrim` (_trim both ends_) is being called under the
+hood for the `both` option.