select chr(49886) from dual; -- 函数 --DECODE(input_value(字段数据),value(匹配值),resul(想要表现的值)t[,value,result…][,default_result(默认值)]); select decode(user_sex,0,'女',1,'男')性别,decode(user_level,1,'初级',5,'中级',9,'高级','中级')from user_info; --c1,c2均为...
有效的输入为 TABLE、VIEW、PROCEDURE、FUNCTION、DEFAULT、RULE、default 和 NULL。 说明 默认映射 NULL,而"default"映射对象类型 DEFAULT。 {default|[@level1name =] 'level1_object_name'|NULL} 指定的 1 级对象类型的名称。level1_object_name 的数据类型为 sysname,其默认值为 NULL。有效的输入为 default、...
SQLBindParameterbinds a buffer to a parameter marker in a SQL statement.SQLBindParametersupports binding to a Unicode C data type, even if the underlying driver does not support Unicode data. Note This function replaces the ODBC 1.0 functionSQLSetParam. For more information, see "Comments." ...
调用自定义函数时如果想不传入参数而使用默认值,那么必须使用 default 关键字。如果自定义函数的参数没有默认值,那么会返回 null。 2、内联表格值函数定义格式: CREATE FUNCTION function_name(@parameter_name parameter_data_type) --CREATE FUNCTION 函数名称(@参数名 参数的数据类型) RETURNS table --返回一个表...
If the previous function call on the handle returns SQL_STILL_EXECUTING and if notification mode is enabled, SQLCompleteAsync must be called on the handle to do post-processing and complete the operation. If SQLParamData is called while sending data for a parameter in a SQL statement, it can...
owner_name.function_name @fparameter_name 1 = @aparameter_name1, ... @fparameter_name_n = @aparameter_name_n 前者实参顺序应该要与函数定义的形参顺序一致,后者实参顺序可以与函数定义的形参书讯不一致。 如果函数的参数有默认值,在调用该函数的时候必须指定 default 关键字才能获得默认值 , 这不同于存...
] 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 function_body RETURN scalar_expression END [ ;...
(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 ...
function-body |--->< parameter-declaration .-IN---. |--+---+--parameter-name--| data-type1 |--+---+--| | (1) | '-| default-clause |-' +-OUT---+ '-INOUT---' data-type1、data-type2 |--+-| built-in-type |---+---| +-| anchored-data-type |-+ +-array-type...
function-definition RETURNS data-type2 option-list SET OPTION-statementSQL-routine-body parameter-declaration parameter-namedata-type1default-clause data-type1, data-type2 built-in-typedistinct-type-namearray-type-name built-in-type SMALLINTINTEGERINTBIGINTDECIMALDECNUMERICNUM(5,0)(integer,0, inte...