Can a subquery return more than one value?
This is not permitted when the subquery follows =, != , <, <= , >, >= or when the subquery is used as an expression. Lees verder »
How to return multiple values in subquery?
The subquery can return only one row. It can return multiple values for the row if the equal or not equal operators are used. SQL compares each value from the subquery row with the corresponding value on the other side of the comparison operator. Lees verder »
Can a subquery return more than one column of data?
A subquery can also return multiple columns when used in an EXISTS expression or when used in a derived table in the FROM clause. Lees verder »
Can SQL subquery return multiple rows?
Subquery and IN operator The IN operator checks whether a specific value is included in a set of values. Such a set can be a subquery that returns multiple rows with one column. Lees verder »
What are the limitations of subquery in SQL?
Limited Functionality: Not all SQL operations can be performed in a subquery. For example, you cannot modify a table and select from the same table in a subquery in the same SQL statement. Lees verder »
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