Trimming strings I
Messy strings can be a problem because sometimes, it is not easy to analyze them without cleaning them.
When analyzing the airports
table, you realize that some values of the airport_name
column are messy strings. These strings have leading and trailing spaces.
The TRIM()
function can help you to remove these additional spaces for the airports
table.
Diese Übung ist Teil des Kurses
Cleaning Data in SQL Server Databases
Anleitung zur Übung
- Examine the content of the
airports
table to see the leading and trailing spaces. - Use the appropriate function to remove the leading and trailing spaces.
- Select the source table where the data is.
Interaktive Übung
Versuche dich an dieser Übung, indem du diesen Beispielcode vervollständigst.
SELECT
airport_code,
-- Use the appropriate function to remove the extra spaces
___(___) AS airport_name,
airport_city,
airport_state
-- Select the source table
FROM ___