Select

Choose a car: Volvo Saab Mercedes Audi More "Try it Yourself" examples below. Definition and Usage The element is used to create a drop-down list. The element is most often used in a form, to collect user input. The name attribute is needed to reference the form data after the form is submitted (if you omit the name attribute, no data from the drop-down list will be submitted). The id attribute is needed to associate the drop-down list with a label. The element define the available options in the drop-down list. Tip: Always add the Browser Support Element Yes Yes Yes Yes Yes Attributes Attribute Value Description autofocus Specifies that the drop-down list should automatically get focus when the page loads disabled Specifies that a drop-down list should be disabled form_id Defines which form the drop-down list belongs to multiple Specifies that multiple options can be selected at once name Defines a name for the drop-down list required Specifies that the user is required to select a value before submitting the form number Defines the number of visible options in a drop-down list Global Attributes The tag also supports the Event Attributes The tag also supports the More Examples Choose a car: Volvo Saab Mercedes Audi Related Pages HTML DOM reference: CSS Tutorial: Default CSS Settings None. W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed ...

Note To view Transact-SQL syntax for SQL Server 2014 and earlier, see Arguments @ local_variable A declared variable for which a value is to be assigned. Assign the value on the right to the variable on the left. Compound assignment operator: Operator Action = Assigns the expression that follows, to the variable. += Add and assign -= Subtract and assign *= Multiply and assign /= Divide and assign %= Modulo and assign &= Bitwise AND and assign ^= Bitwise XOR and assign |= Bitwise OR and assign expression Any valid Remarks SELECT @ local_variable is typically used to return a single value into the variable. However, when expression is the name of a column, it can return multiple values. If the SELECT statement returns more than one value, the variable is assigned the last value that is returned. If the SELECT statement returns no rows, the variable retains its present value. If expression is a scalar subquery that returns no value, the variable is set to NULL. One SELECT statement can initialize multiple local variables. Note A SELECT statement that contains a variable assignment cannot be used to also perform typical result set retrieval operations. Examples A. Use SELECT @local_variable to return a single value In the following example, the variable @var1 is assigned "Generic Name" as its value. The query against the Store table returns no rows because the value specified for CustomerID doesn't exist in the table. The variable retains the "Generic Name" value. This exampl...

CustomerID CustomerName ContactName Address City PostalCode Country 1 Alfreds Futterkiste Maria Anders Obere Str. 57 Berlin 12209 Germany 2 Ana Trujillo Emparedados y helados Ana Trujillo Avda. de la Constitución 2222 México D.F. 05021 Mexico 3 Antonio Moreno Taquería Antonio Moreno Mataderos 2312 México D.F. 05023 Mexico 4 Around the Horn Thomas Hardy 120 Hanover Sq. London WA1 1DP UK 5 Berglunds snabbköp Christina Berglund Berguvsvägen 8 Luleå S-958 22 Sweden SELECT * FROM Customers WHERE CustomerID=1; Operators in The WHERE Clause The following operators can be used in the WHERE clause: Operator Description Example = Equal > Greater than = Greater than or equal Not equal. Note: In some versions of SQL this operator may be written as != BETWEEN Between a certain range LIKE Search for a pattern IN To specify multiple possible values for a column Test Yourself With Exercises

In this article Applies to: Databricks SQL Databricks Runtime Composes a result set from one or more SELECT clause can be part of a query which also includes common table expressions (CTE), set operations, and various other clauses. Syntax SELECT [ hints ] [ ALL | DISTINCT ] -- Overlapping names result in an error > SELECT * EXCEPT(c2, c2.a) FROM VALUES(1, named_struct('a', 2, 'b', 3)) AS t(c1, c2); Error: EXCEPT_OVERLAPPING_COLUMNS Related articles • • • • • • • • • • • • • • • • • • • • • • • •

SELECT [ALL | DISTINCT | DISTINCTROW ] [HIGH_PRIORITY] [STRAIGHT_JOIN] [SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT] [SQL_NO_CACHE] [SQL_CALC_FOUND_ROWS] select_expr [, select_expr] ... [ into_option] [FROM table_references [PARTITION partition_list]] [WHERE where_condition] [GROUP BY SELECT is used to retrieve rows selected from one or more tables, and can include UNION operations and subqueries. Beginning with MySQL 8.0.31, INTERSECT and EXCEPT operations are also supported. The UNION, INTERSECT, and EXCEPT operators are described in more detail later in this section. See also A SELECT statement can start with a WITH clause to define common table expressions accessible within the SELECT. See The most commonly used clauses of SELECT statements are these: • Each select_expr indicates a column that you want to retrieve. There must be at least one select_expr. • table_references indicates the table or tables from which to retrieve rows. Its syntax is described in • SELECT supports explicit partition selection using the PARTITION clause with a list of partitions or subpartitions (or both) following the name of the table in a table_reference (see • The WHERE clause, if given, indicates the condition or conditions that rows must satisfy to be selected. where_condition is an expression that evaluates to true for each row to be selected. The statement selects all rows if there is no WHERE clause. In the WHERE expression, you can use any of the functions and operators t...