This media is not supported in your browser
VIEW IN TELEGRAM
Constraining columns
This media is not supported in your browser
VIEW IN TELEGRAM
Changing a schema
This media is not supported in your browser
VIEW IN TELEGRAM
Removing duplicates
This media is not supported in your browser
VIEW IN TELEGRAM
Ordering output
This media is not supported in your browser
VIEW IN TELEGRAM
Conditional expressions
This media is not supported in your browser
VIEW IN TELEGRAM
Understanding JOIN
This media is not supported in your browser
VIEW IN TELEGRAM
Relating multiple tables
This media is not supported in your browser
VIEW IN TELEGRAM
About SQL strings
This media is not supported in your browser
VIEW IN TELEGRAM
Finding the length of a string
This media is not supported in your browser
VIEW IN TELEGRAM
Selecting part of a string
This media is not supported in your browser
VIEW IN TELEGRAM
Removing spaces
This media is not supported in your browser
VIEW IN TELEGRAM
What type is that value
This media is not supported in your browser
VIEW IN TELEGRAM
Integer division
This media is not supported in your browser
VIEW IN TELEGRAM
Rounding numbers
This media is not supported in your browser
VIEW IN TELEGRAM
Dates and times
This media is not supported in your browser
VIEW IN TELEGRAM
Date- and time-related functions