Learn how to use the LENGTH function to measure the length of strings returned from your database by your SQL query.
- [Instructor] Using the length function,…I can return the length of any particular string…as part of my SQL query.…So for example, let's select the first_name…and last_name columns from the employees table.…I can also add the length function…to be part of my SQL output.…So I can type length…and inside brackets the column name.…So for example, first_name.…This will return the length…that is how many characters make up the value…in the first_name column.…
So five for Ellen.…Six for Sundar.…Five for David.…And four for Amit.…Adding length and the last_name column…will return the same information…for the last_name as well.…So four for Abel.…And six for Austin.…And four again for Bell.…
Note: This training course is appropriate for beginning database developers with no prior experience with SQL or Oracle.
- Using Oracle SQL*Developer, the free development environment
- Selecting data from tables
- Filtering data
- Using functions to manipulate data
- Joining data from tables
- Creating tables
- Updating values
- Truncating data
- Grouping and ordering result sets
- Working with primary keys
- Checking constraints
Skill Level Beginner
Database Foundations: Core Conceptswith Adam Wilbert2h 14m Beginner
Database Foundations: Administrationwith Adam Wilbert1h 14m Beginner
Oracle 12c Database: Administrationwith David Yahalom3h 58m Beginner
1. Introduction to SQL
2. Preparing the Course Environment
Downloading the course VM2m 16s
3. Using Oracle SQL Developer
4. Basic SELECT Queries
5. String, Number, and Date Functions
6. Joining Table Data
7. Manipulating Data
8. Grouping Data
9. Advanced Topics
Next steps1m 33s
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