auto-increment

Is there a way in my sql to auto increment by the date and time? so say I have a table mytable ===================================================== = Comment_ID = First_Name = Comment = DateTime = ===================================================== = 1 = Bob = FooBar = 11-01-14 11:00 = = 2 = Jack = Blah = 11-01-14 12:29 = = 3 = John = jonny = 12-01-14 07:09 = ===================================================== Is there away to make the date auto-increment? Run this in your MySQL: ALTER TABLE `mytable` CHANGE COLUMN `DateTime` `DateTime` TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP ; This sets

I have an id i.e primary key and auto increment. Is there any query to update my existing id and make my id start from 1 and next id 2 and so on.. For example id name 3 ABC 5 XYZ 9 PQR NOTE: id is already primary and auto increment and I don't want truncate my id. if possible i want to get id name 1 ABC 2 XYZ 3 PQR ALTER TABLE table AUTO_INCREMENT = 1; is not my solution. Thanks Is there any query to update my existing id and make my id start from 1 and next id 2 and so on What you can do is transfer the content of your table to another table. Reset the auto increment counter, insert your data

I have a variable which at the beginning is set to a given range. I want to have a loop statement that would take the next row down from the end of the given range and add it to that range. ie: myRows = Range(1:10) For Each cell in myRows If cell.Value > 2048 Then myRows = myRows + myRows.Offset(1, 0) ---This is where i need help--- Basically how do i auto increment the range each time the loop runs. Edit: Also how would I Add to the front of the range. As well as Take away from the back of the range. ie Range(1:10) is unhidden Range(11:20) is hidden I want to add one to the unhidden range

My db table looks like this pic. http://prntscr.com/22z1n Recently I've created delete.php page. it works properly but when i deleted 21th user next registered user gets 24th id instead of 21. Is it possible to put newly registered users info to first empty row? (In this situation 21th row) In my registration form, newly registering user can write names of existing users, and be friends with them after registration. For this friendship i have another table that associates id of newly registered user and existing user. For this purpose i'm using mysql_insert_id during registration to get id for

I am working on website that allows people to create profiles online. I was wondering if it is the right choice to use MySQL AUTO_INCREMENT ed IDs as my user ids. Also bearing in mind that I might have to duplicate the database across multiple servers one day? e.g. would you use this method for userIds on a website like Twitter or Facebook? I have tried generating userIds with PHP before. I used something like this: function generateID() { $possible = "1234567890"; $code = ""; $characters = mt_rand(7,14); $i = 0; while ($i < $characters) { $code .= substr($possible, mt_rand(0, strlen($possible

I am using MySQL 5. I need to set the seed value as 1000 for my auto increment field. How can I set it? To set when creating your table: CREATE TABLE xxx(...) AUTO_INCREMENT = 1000; To set after creating the table: ALTER TABLE xxx AUTO_INCREMENT = 1000; Asaph If the table already exists, you can do this: ALTER TABLE mytable AUTO_INCREMENT = 1000; But make sure the highest value in the auto_increment column is less than 1000. If you are creating a new table, you can do this: CREATE TABLE mytable (id INT UNSIGNED PRIMARY KEY AUTO_INCREMENT) AUTO_INCREMENT = 1000; 来源： https://stackoverflow.com

I want to create a document in azure documentdb with an auto-increment column. Is this possible? If yes, please guide me. Any help would be greatly appreciated. Database db = CreateOrReadDocumentDb("EmployeeDb").Result; DocumentCollection dc = CreateOrReadDocumentCollection(db.SelfLink, "EmployeeDetails").Result; Employee emp = new Employee(); emp.Name="ABC"; emp.id="";//automatically generate a unique string emp.sal=10000; emp.exp =5; emp.index=0; // I want an auto increment column for emp with name index and want to store in azure document db client.CreateDocumentAsync(collectionLink, data);