records | 易学教程

Calling PL/SQL procedure with user defined record as its IN parameter using JDBC

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问题 I am trying to call the following PL/SQL procedure that takes a user defined record type as an IN parameter. -- User Defined Record TYPE EMP_REC IS RECORD ( id employees.employee_id%type, name employees.last_name%type, dept_name departments.department_name%type, job_title jobs.job_title%type, salary employees.salary%type, manager_id employees.employee_id%type, city locations.city%type, phone employees.phone_number%type ); Here is the definition of the user defined record: -- PURPOSE: Prints

Haskell record accessors shared by different constructors of the same data type

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问题 A basic question about Haskell records. If I define this datatype, data Pet = Dog { name :: String } | Cat { name :: String } deriving (Show) the following works: main = do let d = Dog { name = "Spot" } c = Cat { name = "Morris" } putStrLn $ name d putStrLn $ name c But if I do this, data Pet = Dog { name :: String } | Cat { name :: Integer } deriving (Show) I'll get this error: Multiple declarations of 'name' . I think I understand intuitively why this should be the case, since the type of

通过OAuth2.0 获取授权访问SF 用户数据

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通过OAuth2.0 获取授权访问SF 用户数据 OAuth2.0 相关知识深入了解 Salesforce 中的 OAuth 2.0(SF官方) OAuth 2.0 的一个简单解释(阮一峰大神) OAuth 2.0 的四种方式(阮一峰大神) GitHub OAuth 第三方登录示例教程(阮一峰大神) 创建应用程序新建应用程序访问示例(Python+django) 环境准备： index.html 两种方式：方式一：采用由用户授权，调用者无需知道SF的用户名与密码方式二：直接通过用户名密码获取授权方式一：需要用户授权 <a href="https://login.salesforce.com/services/oauth2/authorize?response_type=code&client_id=xxxx&redirect_uri=http://localhost:8000/sfapp/callBack&state=userAuthor&prompt=consent">获取Code</a> 方式二：使用密码方式 <a href="/sfapp/pwdOAuth">Username-Password OAuth</a> 方式三：刷新 <a href="/sfapp/refreshToken"

Statically “extend” a record-ish data type without indirection hassle

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问题 I am currently working with a three-level process for which I need some information to flow being accessed and updated. The information is also three-leveled, in such a way that a process at one level may need to access/update information at its level and at higher levels. type info_0 = { ... fields ... } type info_1 = { ... fields ... } type info_2 = { ... fields ... } fun0 will do some stuff with an info_0 , then pass it to fun1 along with an info_1 , then get back the resulting info_0 and

VHDL: Is it possible to define a generic type with records?

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问题 I am trying to define a complex type (i.e, a type that consists of both a real and imaginary part) and am trying to find out a way to make it generic. This my current static code: type complex_vector is record Re : signed(15 downto 0); Im : signed(15 downto 0); end record; Now I wonder whether there is a way to make this generic, in in other word something like: type complex_vector (Generic: Integer := WIDTH) is record Re : signed(WIDTH downto 0); Im : signed(WIDTH downto 0); end record; I

saving a records containing a member of type string to a file (Delphi, Windows)

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问题 I have a record that looks similar to: type TNote = record Title : string; Note : string; Index : integer; end; Simple. The reason I chose to set the variables as string (as opposed to an array of chars) is that I have no idea how long those strings are going to be. They can be 1 char long, 200 or 2000. Of course when I try to save the record to a type file (file of...) the compiler complains that I have to give a size to string. Is there a way to overcome this? or a way to save those records

C: Reading a text file into a struct array

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问题 I've been trying to wrap my brain around this problem for the past 2 days and still have no idea how to do this. Pretty much I have to make a function( getRawData ) that is passed a pointer to a file already open for reading, and passed an array of structs and the number of records currently in that array(through the paramer currSize). The function is to read the data from the file into the array placing it at the end of the array and will return the total number of records in the file after

通过OAuth2.0 获取授权访问SF 用户数据

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How to combine rows of record types in PureScript? (Is there any alternative to the Union typeclass in PureScript 0.12.0?)

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问题 Problem: I have different record types with many common fields. How could I "include" the common fields in the record type definitions? Example: newtype RecordType1 = RecordType1 { a :: Int, b :: Int, y :: String } newtype RecordType2 = RecordType2 { a :: Int, b :: Int, z :: Boolean } How to write the equivalent in PureScript? newtype RecordType1 = RecordType1 { CommonFields, y :: String } newtype RecordType2 = RecordType2 { CommonFields, z :: Boolean } The type class Union mentioned in An

Number of Records in Insert Statement (Oracle)

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问题 I'd like to report on the number of records inserted in an Oracle insert statement. I'm inserting from a statement, so I could run my select twice and a count, but I'd rather keep it all in a single statement. Is there a way? 回答1: Doing an INSERT in PL/SQL SQL%ROWCOUNT gives the number of inserted rows. Doing an INSERT in C# cmd.ExecuteNonQuery() returns the number of inserted rows. 来源： https://stackoverflow.com/questions/1468396/number-of-records-in-insert-statement-oracle