SQL 複製 -- Create a temporary function with no parameter. > CREATE TEMPORARY FUNCTION hello() RETURNS STRING RETURN 'Hello World!'; > SELECT hello(); Hello World! -- Create a permanent function with parameters.
sql CREATE TEMPORARY FUNCTION function_name AS 'path.to.function'; 这里的 function_name 是你给函数取的名字,path.to.function 是该函数的实际路径或名称。 代码原理: 编译与存储:当执行 CREATE TEMPORARY FUNCTION 语句时,数据库首先检查是否存在具有相同名称的临时函数。如果存在,它可能会覆盖旧函数。然后,数据...
CREATE [ OR REPLACE ] [ TEMPORARY ] FUNCTION [ <owner>.]<function-name> ( [ parameter,… ] ) [ SQL SECURITY { INVOKER | DEFINER } ] RETURNS <data-type> ON EXCEPTION RESUME | [ NOT ] DETERMINISTIC { <compound-statement> | AS tsql-compound-statement | EXTERNAL NAME library-call | ...
CREATE TEMPORARY FUNCTION dboutput AS 'org.apache.hadoop.hive.contrib.genericudf.example.GenericUDFDBOutput'; 1. 2. 3. 2. dboutput使用方法 select dboutput(jdbc数据库链接, 用户名, 密码, sql语句, hive字段值) from hive表 准备一张hive表记录如下,然后在mysql中创建相同字段的表. 根据上面到规则,...
(create_definition,...)[table_options][partition_options]CREATE[TEMPORARY]TABLE[IF NOT EXISTS]tbl_name[(create_definition,...)][table_options][partition_options][IGNORE | REPLACE][AS]query_expressionCREATE[TEMPORARY]TABLE[IF NOT EXISTS]tbl_name ...
function-definition .-,---. V | |--RETURNS TABLE--(---column-name--data-type2-+--)---> >--option-list--+---+--SQL-routine-body---| '-SET OPTION-statement-' parameter-declaration |--parameter-name--data-type1---| data-type1, data-type...
Use this statement to create a permanent procedure in the current database or a temporary procedure in the tempdb database.หมายเหตุ The integration of .NET Framework CLR into SQL Server is discussed in this topic. CLR integration does not apply to Azure SQL Database....
The complete name for a local temporary procedure, including #, can't exceed 116 characters.; numberApplies to: SQL Server 2008 (10.0.x) and later, and Azure SQL Database.An optional integer that is used to group procedures of the same name. These grouped procedures can be dropped ...
obj_file,link_symbol This form of the AS clause is used for dynamically loadable C language functions when the function name in the C language source code is not the same as the name of the SQL function. The stringobj_fil...
Temporary tables Show 12 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric Creates a new table in the database. Note For reference to Warehouse in Microsoft Fabric, visit CREATE TABLE (Fabric Data Warehouse). For reference to Azure Syn...