使用这些函数,可以极大地提高数据库的管理。SQL Server中的函数从功能方面主要分为以下几类:字符串函数、数学函数、数据转换函数、文本和图像函数、日期和时间函数、系统函数等。 内置函数分类 聚合函数、数学函数、字符串函数、日期函数、转换函数、其他函数 聚合函数 说明 对一组值进行计算返回一个单一的值 除了COUNT...
SQL Server built-in functions are either deterministic or nondeterministic. Functions are deterministic when they always return the same result any time they are called by using a specific set of input values. Functions are nondeterministic when they could return different results every time they are...
-- Uses AdventureWorks SELECT FirstName, LastName FROM DimEmployee WHERE FirstName IN ('Mike', 'Michael'); See Also CASE (Transact-SQL) Expressions (Transact-SQL) Built-in Functions (Transact-SQL) Operators (Transact-SQL) SELECT (Transact-SQL) WHERE (Transact-SQL) ALL (Transact-SQL) SOME...
Built-in functions that are considered foldable by SQL Server, including CAST and CONVERT. Generally, an intrinsic function is foldable if it is a function of its inputs only and not other contextual information, such as SET options, language settings, da...
SQL Server 2016 (13.x) 及更高版本 Azure SQL 数据库 Azure SQL 托管实例 JSON 的内置支持包括本文简要介绍的下列内置函数。 ISJSON测试字符串是否包含有效 JSON。 JSON_VALUE从 JSON 字符串中提取标量值。 JSON_QUERY从 JSON 字符串中提取对象或数组。
Microsoft.SqlServer.Management.SqlParser.MetadataProvider..::..BuiltInFunctionCollection 命名空间:Microsoft.SqlServer.Management.SqlParser.MetadataProvider 程序集:Microsoft.SqlServer.Management.SqlParser(在 Microsoft.SqlServer.Management.SqlParser.dll 中) ...
Represents the built in functions as a simple table reference. 继承层次结构 System.Object Microsoft.SqlServer.TransactSql.ScriptDom.TSqlFragment Microsoft.SqlServer.TransactSql.ScriptDom.TableReference Microsoft.SqlServer.TransactSql.ScriptDom.TableReferenceWithAlias ...
To query the server collation for an instance of SQL Server, use the SERVERPROPERTY function:SQL Copy SELECT CONVERT (NVARCHAR (128), SERVERPROPERTY('collation')); To query the server for all available collations, use the following fn_helpcollations() built-in function:SQL Copy ...
Machine Learning Services (in database) Queries, stored procedures, views, functions, triggers (T-SQL) Replication, Change Tracking, Change Data Capture Startup, shutdown, restart issues (instance or database) SQL Server resource usage (CPU, Memory, Storage) and Configuration ...
During SQL Server Failover Cluster installation, computer object (Active Directory computer accounts) for the SQL Server Network Resource Name is created. In a Windows Server 2008 cluster, the cluster name account (computer account of the cluster itself) needs to have permissions to create computer...