There is no provision to create a function that takes a variable number of parameters. So the best you could do is to create a CREATE_WS which takes, say, six strings plus the separator. But then you need to al
and c.owner = cc.owner and c.constraint_name = cc.constraint_name order by cc.position; --查看函数和过程 select object_name,status from user_objects where object_type='FUNCTION'; select object_name,status from user_objects where object_type='PROCEDURE'; --查看函数和过程的源代码 select tex...
-- 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. > CREATE FUNCTION area(x DOUBLE, y DOUBLE) RETURNS DOUBLE RETURN x * y...
Creates a user-defined function (UDF), which is a Transact-SQL or common language runtime (CLR) routine. A user-defined function accepts parameters, performs an action such as a complex calculation, and returns the result of that action as a value. The return value can either be a scalar...
The parameters of the MIN function are: expression(mandatory): This is the expression that is being considered for the MIN function. It can be a value or set of values, a column name, or any other valid expression. analytic_clause(optional): This is used when you’re using MIN as an ...
Function names must comply with the rules for identifiers and must be unique within the database and to its schema. Parentheses are required after the function name, even if a parameter isn't specified. @parameter_name A parameter in the user-defined function. One or more parameters can be ...
getExpression(); //判断表达式是否是函数 if (expression instanceof Function) { Function function = (Function) expression; NamedExpressionList namedParameters = function.getNamedParameters(); if (namedParameters != null) { List<Expression> expressions = namedParameters.getExpressions(); System.out....
WITH TOTALS修饰符 如果使用了WITH TOTALS修饰符,你将会在结果中得到一个被额外计算出的行。在这一行中将包含所有key的默认值(零或者空值),以及所有聚合函数对所有被选择数据行的聚合结果。 GROUP BY使用外部存储设备 你可以在GROUP BY中允许将临时数据转存到磁盘上来限制对内存的使用。 max_bytes_before_external_...
ODPS-0140051:Invalid function 模块:PLANNER。 严重等级:1。 触发条件:非法函数。 处理方法:您可以通过MaxCompute客户端执行show functions;或list functions;命令查看正确的函数名称。 ODPS-0140061:Invalid parameters 模块:PLANNER。 严重等级:1。 触发条件:输入参数异常。
When a stored procedure or function is executed, input parameters can either have their value set to a constant or use the value of a variable. Output parameters and return codes must return their values into a variable. Parameters and return codes can exchange data values with either Transact...