Techopedia explains Concatenation
The most common use of concatenation is to join two database fields that are stored separately but usually operated upon together. Take for example to fields named ‘FIRST NAME’ and ‘SURNAME’. These two fields are sometimes as two stored separate fields, but when retrieving them the viewer will usually want to see both names.
Concatenation is achieved by use of a special concatenation operator in a SQL query. For example, Oracle Database uses the || operator to join two strings. A sample SQL query to achieve this is:
SELECT first_name||’ ‘||surname FROM customer_master.
Note that in this case we have also included a space (enclosed by ‘ ‘) between the two names. This is simply to enhance the legibility of the final output. If we just joined the two fields without a space in between the query would be:SELECT first_name||surname FROM customer_master.
Survey: Why Is There Still a Gender Gap in Tech?
Do you work in the tech industry? Help us learn more about why the gender gap still exists in tech by taking this quick survey! Survey respondents will also be entered to win a $100 Amazon Gift Card!
- Data Breach Notification: The Legal and Regulatory Environment
- Artificial Intelligence in Cybersecurity
- The Differences Between the Top 3 Cryptocurrencies
- Hacking Cryptocurrencies
- An Introduction to Blockchain Technology
- Survey: Why Is There Still a Gender Gap in Tech?