Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) Azure SQL Edge SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric Returns the first value in an ordered se
Transact-SQL 语法约定 语法 syntaxsql FIRST_VALUE( [scalar_expression] ) [IGNORENULLS|RESPECTNULLS]OVER( [partition_by_clause]order_by_clause[rows_range_clause] ) 参数 scalar_expression 要返回的值。 scalar_expression 可以是产生单个值的列、子查询或其他任意表达式。 不允许使用其他分析函数。
syntaxsql 複製 FIRST_VALUE ( [ scalar_expression ] ) [ IGNORE NULLS | RESPECT NULLS ] OVER ( [ partition_by_clause ] order_by_clause [ rows_range_clause ] ) 引數 scalar_expression 要傳回的值。 scalar_expression 可以是資料行、子查詢,或其他結果為單一值的任意運算式。 不允許使用其他分...
This function is used to obtain the value of the first data record in the window corresponding to the current row.The restrictions on using window functions are as follow
FIRST_VALUE (expression) [ {RESPECT | IGNORE} NULLS ]) OVER ( [ query_partition_clause ] order_by_clause [frame_clause] )Code language:SQL (Structured Query Language)(sql) In this syntax: expression is an expression evaluated against the value of the first row in the window frame specifie...
The FIRST_VALUE analytic function returns the first value in an ordered set of values provided by the windowing expression. FIRST_VALUE can only be used in the context of awindowing expression. Syntax FIRST_VALUE_Expression := 'FIRST_VALUE' '('expression')'. ...
Returns the first value in an ordered set of values in SQL Server 2012. Transact-SQL Syntax Conventions Syntax FIRST_VALUE ( [scalar_expression ] ) OVER ( [ partition_by_clause ] order_by_clause [ rows_range_clause ] ) Arguments
Syntax Description of the illustration first_value.eps See Also: "Analytic Functions"for information on syntax, semantics, and restrictions, including valid forms ofexpr Purpose FIRST_VALUEis an analytic function. It returns the first value in an ordered set of values. If the first value in the...
Transact-SQL 语法约定 语法 syntaxsql sp_describe_first_result_set[ @tsql = ]N'tsql'[ , [ @params = ]N'@parameter_name data_type [ , ... n ]'] [ , [ @browse_information_mode= ]<tinyint>] [ ; ] 参数 重要 扩展存储过程的参数必须按特定顺序输入,如语法节中所述。 如果参数按顺序...
Syntax Copy sys.dm_exec_describe_first_result_set_for_object ( @object_id , @include_browse_information ) Arguments @object\_id The @object\_id of a Transact-SQL stored procedure or a Transact-SQL trigger. @object\_id is type int. @include\_browse\_information @include\_browse\_info...