Can SQL subquery return multiple columns?

Can multiple row subquery return multiple columns?

Multiple-row subqueries are nested queries that can return more than one row of results to the parent query. Multiple-row subqueries are used most commonly in WHERE and HAVING clauses. Since it returns multiple rows, it must be handled by set comparison operators (IN, ALL, ANY).

Which subquery use multiple columns of data?

Multiple-column subqueries enable you to combine duplicate WHERE conditions into a single WHERE clause. Column comparisons in a multiple-column subquery can be pairwise comparisons or nonpairwise comparisons. You can use a subquery to define a table to be operated on by a containing query.

How do I return two columns in SQL?

Using the SELECT Statement to Retrieve Data in SQL To retrieve multiple columns from a table, you use the same SELECT statement. The only difference is that you must specify multiple column names after the SELECT keyword, and separate each column by a comma.

How do I SELECT multiple columns in SELECT query?

To select multiple columns from a table, simply separate the column names with commas! For example, this query selects two columns, name and birthdate , from the people table: SELECT name, birthdate FROM people; Sometimes, you may want to select all columns from a table.