For example: For a row-value IN operator, the left-hand side (hereafter "LHS") can be either a parenthesized list of values or a subquery with multiple columns.
In Listing C, we use scalar subqueries to compute several different types of aggregations (max and avg) all in the same SQL statement.Note that this query uses both scalar subqueries and in-line views.If ' N' is not specified, SQL Server converts the string to the code page that corresponds to the default collation of the database or column.Any characters not found in this code page are lost.Once you become acquainted with the syntax, you'll find scalar subqueries to be very powerful.
Scalar subqueries are especially useful for combining multiple queries into a single query.
This technique provides great flexibility and expressive power for SQL queries.
A subquery can return a result set for use in the do not refer to any tables from the outer block of the query.
However, OFFSET requires time proportional to the offset value.
Scalar subqueries are a powerful enhancement to Oracle9i SQL.
The UPDATE statement is used to modify one or several pre-existing records in a database table.