本文說明如何使用 Transact-SQL 在 SQL Server 中建立使用者定義的函式 (UDF)。 限制事項 使用者定義的函式不能用來執行修改資料庫狀態的動作。 使用者定義的函式不得包含具有資料表作為其目標的OUTPUT INTO子句。 使用者定義的函式無法傳回多個結果集。 如果您需要傳回多個結果集,請使...
In SQL, character functions are a type of scalar function used to manipulate and transform character data, such as strings. Some examples of character functions in SQL include: CONCAT This CONCAT function concatenates two or more strings together. For example, we can use CONCAT to combine the ...
Ranking functions Show 6 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric Learn about the categories of built-in functions you can use with SQL...
Normally, the MIN function gets the minimum value of everything. You can use OVER to specify that you want the minimum of a certain group of fields (e.g. MIN hiredate in a department). We can see this in action in the examples section. Similar Functions Some functions which are similar...
SQL Server, any full-text files that are part of the database that is being attached will be attached with the database. To specify a new path of the full-text catalog, specify the new location without the full-text operating system file name. For more information, see the Examples ...
Getting started with SQL date functions To work with date and time, you can use the GETDATE() function, which works in T-SQL, and CURRENT_TIMESTAMP, which follows the ANSI SQL standard. GETDATE() The function returns the current database system date and time in the 'YYYY-MM-DD hh:mm...
In SQL Server, you find four different types of functions: Scalar-valued Functions Table-valued Functions Aggregate Functions System Functions The idea behind functions is to store them in the database and avoid writing the same code repeatedly. ...
Oracle Database SQL Language Reference for detailed information about SQL functions ABS Copy ABS(n) ACOS Copy ACOS(n) ADD_MONTHS Copy ADD_MONTHS(date, integer) aggregate_function Aggregate functions return a single result row based on groups of rows, rather than on single rows. analytic_functi...
Examples of SQL date functions What is a time series database? Summing everything up Learn more about InfluxDB Stop flying blind Be the first to get the latest tutorials, trainings, and all things InfluxDB, Telegraf, and more—right in your inbox. Get Updates SQL...
The CREATE DATABASE command is used is to create a new SQL database.The following SQL creates a database called "testDB":ExampleGet your own SQL Server CREATE DATABASE testDB; Tip: Make sure you have admin privilege before creating any database. Once a database is created, you can ...