syntaxsql 复制 <order_clause> ::= { <column_name_in_clr_table_type_definition> [ ASC | DESC ] } [ , ...n ] <method_specifier> ::= assembly_name.class_name.method_name <clr_function_option> ::= { [ RETURNS NULL ON NULL INPUT | CALLED ON NULL INPUT ] | [ EXECUTE_AS_Claus...
CREATE FUNCTION sqlserver用户定义函数 创建用户定义函数，它是返回值的已保存的 Transact-SQL 例程。用户定义函数不能用于执行一组修改全局数据库状态的操作。与系统函数一样，用户定义函数可以从查询中唤醒调用。也可以像存储过程一样，通过 EXECUTE 语句执行 创建用户定义函数，它是返回值的已保存的 Transact-SQL 例程...
syntaxsql 複製 <order_clause> ::= { <column_name_in_clr_table_type_definition> [ ASC | DESC ] } [ , ...n ] <method_specifier> ::= assembly_name.class_name.method_name <clr_function_option> ::= { [ RETURNS NULL ON NULL INPUT | CALLED ON NULL INPUT ] | [ EXECUTE_...
SQL Copy SELECT * FROM Sales.ufn_SalesByStore (602); Multi-statement table-valued function (MSTVF) The following example creates a multi-statement table-valued function (MSTVF) in the AdventureWorks2022 database. The function takes a single input parameter, an EmployeeID and returns a list...
This CREATE FUNCTION (SQL scalar) statement creates an SQL function at the current server. The function returns a single result. Invocation This statement can be embedded in an application program or issued interactively. It is an executable statement that can be dynamically prepared. Authorization ...
The CREATE FUNCTION (SQL table) statement creates an SQL table function at the current server. The function returns a set of rows. Invocation for CREATE FUNCTION (SQL table) This statement can only be dynamically prepared only if dynamic rules run behavior is in effect. For more information, ...
The column is computed from an expression that uses other columns in the same table. For example, a computed column can have the definition: cost AS price * qty. The expression can be a noncomputed column name, constant, function, variable, and any combination of these connected by one or...
With one exception, the default value specified in a DEFAULT clause must be a literal constant; it cannot be a function or an expression. This means, for example, that you cannot set the default for a date column to be the value of a function such as NOW() or CURRENT_DATE. The excep...
SQL Server 2025 (17.x) Preview introduces an iterated hash algorithm, RFC2898, also known as apassword-based key derivation function(PBKDF). This algorithm still uses SHA-512 but hashes the password multiple times (100,000 iterations), significantly slowing down brute-force attacks. This change...
Creates a Transact-SQL or common language runtime (CLR) stored procedure in SQL Server, Azure SQL Database, and Analytics Platform System (PDW). Stored procedures are similar to procedures in other programming languages in that they can: