How do I concatenate two columns in SQL?

Related questions

1. How do I insert multiple values in one row in SQL?
2. How do I select duplicate rows in SQL?
3. Can we do DML operations on view?
4. How do I use multiple select statements in SQL?
5. Why would you use an append query?
6. How can you insert values in multiple rows using one insert statement?
7. Is truncate faster than delete?
8. What does truncate do in SQL?
9. Does updating a view update the table?
10. Can you insert multiple rows in SQL?

Tags

1. #column
2. #means
3. #lastname
4. #using
5. #individual
6. #firstname
7. #customer
8. #remove
9. #other
10. #include
11. #results
12. #select
13. #table
14. #columns
15. #concat
16. #names
17. #query