What is the difference between join and union.
Answer Posted / vinay shukla
A join selects columns from 2 or more tables.
a union selects rows
Is This Answer Correct ? | 60 Yes | 20 No |
Post New Answer View All Answers
What is the use of sql trace?
What is int identity in sql?
What is the difference between clustered and non-clustered indexes?
What are sql queries used for?
What is the difference between partition and index?
What is cross join sql?
What is trigger explain it?
What is varray in pl sql?
What is varchar used for?
Are sql connections encrypted?
What is difference between table and view?
how to use 'mysql' to run sql statements? : Sql dba
How does pl sql work?
What is %s in sql?
Can we rollback truncate?