What is the Difference between a Join and Subquery ?



What is the Difference between a Join and Subquery ?

Join

  • Joins are SELECT commands that retrieve data from two or more tables.
  • The WHERE clause usually gives the join conditions that determine how data is selected from each table in the join to fill in the specified columns in the select list.
  • Joins are used to return rows.
  • Join is an integral part of the select statement.

Subquery

  • Subquery is a SELECT statement within another SQL Statement.
  • Subqueries structure a complex query into isolated parts.
  • Subqueries allow you to use the results of another query in the outer query.

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