identity

Why setting current identity value is not working for me in SQL Server 2008 R2?

由 妖精的绣舞 提交于 2020-01-06 19:29:47
问题 I am working with SQL Server 2008 R2. I have a table seq_audit which has an identity column. This is the definition of the table: CREATE TABLE [dbo].[seq_audit] ( [id] [bigint] IDENTITY(1,1) NOT NULL, [value] [bit] NULL, PRIMARY KEY CLUSTERED ([id] ASC) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY] ) ON [PRIMARY] The table is empty and never has had any rows in it before. To check its

MS Access TableAdapter Get Identity after insert

由 只谈情不闲聊 提交于 2020-01-06 17:45:23
问题 I'm VB .net 2010 with a MS Access 2010 Database. The wizard created a DataSet with all the tables from the database. So, I can use Me.CostumerAdapter.Insert("New Costumer") And that works flawless. But then I've a grid with some Products (Just the Name) Product #1 Product #2 Product #3 ... When I save the new costumer I need to get its ID so I can insert the products list. Product & Costumer already have a foreing key relationship. How can I get the Costumer inserted ID? Or how can I save all

SQL Server identity counterpart problem

由 为君一笑 提交于 2020-01-06 12:56:49
问题 I'm using SQL Server and I want to use identity constraint in it I know how to use it in following manner create table mytable ( c1 int primary key identity(1,1); ) the above code works fine but what if i want the identity column to have values as EMP001, EMP002,... instead of 1,2.... Thanks in advance, Guru 回答1: Identity columns can only be integers. If you want it to "look like" EMP001, EMP002, etc then that's simply a display issue and not a storage one (that is, you don't need to store

SQL Server identity counterpart problem

由 泄露秘密 提交于 2020-01-06 12:56:34
问题 I'm using SQL Server and I want to use identity constraint in it I know how to use it in following manner create table mytable ( c1 int primary key identity(1,1); ) the above code works fine but what if i want the identity column to have values as EMP001, EMP002,... instead of 1,2.... Thanks in advance, Guru 回答1: Identity columns can only be integers. If you want it to "look like" EMP001, EMP002, etc then that's simply a display issue and not a storage one (that is, you don't need to store

JavaScript sets and value objects [duplicate]

由 会有一股神秘感。 提交于 2020-01-05 11:25:08
问题 This question already has answers here : user defined object equality for a set in harmony (es6) (2 answers) Closed 4 years ago . I want to create a set of value objects in JavaScript. The problem is that in JavaScript equality is based on identity. Hence, two different objects with the same value will be treated as unequal: var objects = new Set; objects.add({ a: 1 }); objects.add({ a: 1 }); alert(objects.size); // expected 1, actual 2 How do you work around this problem? 回答1: Use JSON

JavaScript sets and value objects [duplicate]

由 给你一囗甜甜゛ 提交于 2020-01-05 11:22:15
问题 This question already has answers here : user defined object equality for a set in harmony (es6) (2 answers) Closed 4 years ago . I want to create a set of value objects in JavaScript. The problem is that in JavaScript equality is based on identity. Hence, two different objects with the same value will be treated as unequal: var objects = new Set; objects.add({ a: 1 }); objects.add({ a: 1 }); alert(objects.size); // expected 1, actual 2 How do you work around this problem? 回答1: Use JSON

asp.net identity 2 external sign in not saving userlogin and not finding user after logging in to provider

由 我的未来我决定 提交于 2020-01-05 09:08:22
问题 I am using asp.net identity 2 in a new mvc project (I've set it up to use an int user id instead of the default string identifier). It works successfully logging in normally with an existing account, but if I use the external sign in instead using the same email as the existing account, using Google sign in, I can sign in with Google, and allow the app, but when it redirects me to the ExternalLoginCallback action, it cannot find the user. GetExternalLoginInfoAsync() works to get the loginInfo

Equals for persistent objects

由 僤鯓⒐⒋嵵緔 提交于 2020-01-05 04:42:09
问题 There is well known problem with implementing equals() (and hashCode(), i will speak about equals() only) for persistance object with database managed id. New object is not stored in database, therefore does not have database identity, therefore its "id" field is null (or 0 if it is primitive type). If equals look at id, it will consider all new objects equal, and once it gets id, hash code change so if it already was in hash sensitive collection, it will not be found. One solution is using

Is there a sense of 'object equality' in Haskell?

由 a 夏天 提交于 2020-01-04 21:38:02
问题 If I have a singly linked list in Haskell: data LL a = Empty | Node a (LL a) deriving (Show, Eq) I can easily implement methods to insert at the end and at the beginning. But what about inserting after or before a particular element? If I have a LL of Integer , can I make a distinction in Haskell between inserting 4 after a particular node containing a 1 , rather than the first 1 that it sees when processing the list? Node 1 (Node 2 (Node 3 (Node 1 Empty))) I'm curious how an insertAfter

PPK提供的浏览器类型及版本检测方法

由 情到浓时终转凉″ 提交于 2020-01-04 17:57:02
PPK提供的浏览器类型及版本检测方法 一个常用但是被高估的Javascript函数就是浏览器检测。有些时候，你想给出一个说明或者加载一个页面来提示用户，以免使用Safari等浏览器。 使用方法： Browser name: BrowserDetect.browser Browser version: BrowserDetect.version OS name: BrowserDetect.OS var BrowserDetect = { init: function () { this.browser = this.searchString(this.dataBrowser) || "An unknown browser"; this.version = this.searchVersion(navigator.userAgent) || this.searchVersion(navigator.appVersion) || "an unknown version"; this.OS = this.searchString(this.dataOS) || "an unknown OS"; }, searchString: function (data) { for (var i=0;i<data.length;i++) { var dataString = data[i]
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