Join Bill Weinman for an in-depth discussion in this video Finding the length of a string, part of SQL Essential Training.
- View Offline
- Exercise Files
…While the SQL standard does not include a function for finding the length of…a string, most modern database systems do…include one and it's usually called length.…For this example, we'll be using the world.db database.…And finding the length of the string looks like this.…Here, I'll be getting the length of the literal string,…with the word string in it, which is six letters long.…So when I press go, I get a result that says six.…Of course, this is much more useful as part…of a query, so let's create a query here.…
So there's a query that will list the name, the length of the name from…the city table and ordered by length descending,…and name within the ordering of the length.…So when I press go, you see we have…a list of the cities, ordered by their length descending.…And when there are more than one with…the same length, the cities are in alphabetical order.…While length is not a standard SQL…function, it is supported in most database systems.…The name is usually length but you…should check your documentation for details and variance.…
- Understanding SQL terminology and syntax
- Creating new tables and records
- Inserting and updating data
- Writing basic SQL queries
- Sorting and filtering
- Accessing related tables with JOIN
- Working with strings
- Finding the numeric type of a value
- Using aggregate functions and transactions
- Updating a table with triggers
- Creating views
Skill Level Beginner
1. SQL Quick Start
Understanding joins2m 23s
Dates and times1m 59s
10. Subselects and Views
11. A Simple CRUD Application
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
This will not affect your course history, your reports, or your certificates of completion for this course.Cancel
Take notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.