Merge 295fe153ad into e91b163571

Hello, I've added a small blockquote below the description to indicate that this method of accessing an indefinite number of function arguments has been superseded by the use of the spread operator via rest parameters for ES6+ compatibility.

README.md

@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
 
-_1433 TILs and counting..._
+_1434 TILs and counting..._
 
 ---
 
@@ -607,6 +607,7 @@ _1433 TILs and counting..._
 - [Display Output In A Vertical Format](mysql/display-output-in-a-vertical-format.md)
 - [Doing Date Math](mysql/doing-date-math.md)
 - [Dump A Database To A File](mysql/dump-a-database-to-a-file.md)
+- [Echo A Message From A SQL File](mysql/echo-a-message-from-a-sql-file.md)
 - [Ignore Duplicates When Inserting Records](mysql/ignore-duplicates-when-inserting-records.md)
 - [List Databases And Tables](mysql/list-databases-and-tables.md)
 - [Run Statements In A Transaction](mysql/run-statements-in-a-transaction.md)

javascript/accessing-arguments-to-a-function.md

@@ -5,6 +5,8 @@ an array-like object with all of the arguments to the function. Even if not
 all of the arguments are referenced in the function signature, they can
 still be accessed via the `arguments` object.
 
+> For ES6+ compatibility, the `spread` operator used via [rest parameters](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters) is preferred over the `arugments` object when accessing an abritrary number of function arguments.
+
 ```javascript
 function argTest(one) {
   console.log(one);

mysql/echo-a-message-from-a-sql-file.md

@@ -0,0 +1,32 @@
+# Echo A Message From A SQL File
+
+Let's say we have a SQL file that we run to seed our database. We want to echo
+a message to stdout at the beginning of that file's execution. We can do this
+with [a MySQL client _shell
+command_](https://dev.mysql.com/doc/mysql-shell/8.0/en/mysql-shell-commands.html).
+Specifically, we need to use the `\system` or `\!` command to run our system's
+`echo` command.
+
+Here is what that could look like:
+
+```sql
+\! echo '*****************************************'
+\! echo '*                                       *'
+\! echo '*  Loading seed data into the database  *'
+\! echo '*                                       *'
+\! echo '*****************************************'
+
+insert into products ...
+```
+
+That message banner will be output when you run the script.
+
+```bash
+$ mysql -h ::1 -P 3306 -u root -D local_database < seed_data.sql
+
+*****************************************
+*                                       *
+*  Loading seed data into the database  *
+*                                       *
+*****************************************
+```