SELECT function_name(parameter_value,...); 1. 3.删除自定义函数语法: drop function [IF EXISTS] function_name; 1. 三.自定义函数的应用 四.深入使用自定义函数 1.复合结构 参考例3 2.局部变量和全局变量 自定义函数中定义局部变量语法: DECLARE var_name[,varname]...date_type [DEFAULT VALUE]; 简...
CREATE [ OR ALTER ] FUNCTION [ schema_name. ] function_name ( [ { @parameter_name [ AS ] [ type_schema_name. ] parameter_data_type [ NULL ] [ = default ] [ READONLY ] } [ , ...n ] ] ) RETURNS return_data_type [ WITH <function_option> [ , ...n ] ] [ AS ] BEGIN...
value的大小不能超过 7,500 个字节。 [ @level0type=] {level0_object_type} 级别0 对象的类型。level0_object_type是varchar (128),默认值为 NULL。 有效输入包括:ASSEMBLY、CONTRACT、EVENT NOTIFICATION、FILEGROUP、MESSAGE TYPE、PARTITION FUNCTION、PARTITION SCHEME、REMOTE SERVICE BINDING、ROUTE、SCHEMA、SERV...
The schema that contains the names of SQL Server system data types. The default schema of the current user in the current database. The dbo schema in the current database. [ = default ] A default value for the parameter. If a default value is defined, the function can be executed witho...
如果未以@parameter = value格式传递参数值,则必须按 CREATE PROCEDURE 语句中所列的参数顺序(从左到右)提供值。 最好指定参数名称,以便提高可读性和与存储过程的未来版本的兼容性。 警告 任何采用@parameter = value格式传入的参数如果拼写错误,就会导致 SQL Server 生成错误,并阻止过程执行。
( [ { @parameter_name [ AS ] [ type_schema_name. ] parameter_data_type [ = default ] } [ ,...n ] ] ) RETURNS TABLE [ WITH <function_option> [ ,...n ] ] [ AS ] RETURN [ ( ] select_stmt [ ) ] [ ; ] 现在来写一个比较实用的表值函数.. ...
2446 当使用轻型查询执行统计信息分析基础结构或执行 ParameterRuntimeValue DMV,同时对长时间运行的查询进行故障排除时,会导致 SQL Server 生成带有 sys.dm_exec_query_statistics_xml 的Showplan XML 片段。 适用于:SQL Server 2017 (14.x) CU 31、SQL Server 2019 (15.x) CU 19 和 SQL Server 2022 (16....
(Function returns SQL_SUCCESS_WITH_INFO.) 01004 String data, right truncated String or binary data returned for an input/output or output parameter resulted in the truncation of nonblank character or non-NULL binary data. If it was a string value, it was right-truncated. (Function returns ...
SQL Server 和 Azure SQL 数据库中存储过程的 Transact-SQL 语法: syntaxsql 复制 CREATE [ OR ALTER ] { PROC | PROCEDURE } [schema_name.] procedure_name [ ; number ] [ { @parameter_name [ type_schema_name. ] data_type } [ VARYING ] [ NULL ] [ = default ] [ OUT | OUTPUT | [...
Only one query plan is cached and used for all parameter values. This can cause a query plan to be inefficient for some values of the parameter, also known as a parameter sensitive plan. Parameterized queries can have multiple cached query plans for different selectivity categories of a ...