Rails has a very convenient uniqueness validation. ASP.NET MVC doesn\'t. I need to make sure that the e-mail address a user has entered hasn\'t been registered by anyone yet.
Hi lets say I\'ve got this array: $check_post = array( $_POST[\"a_post\"], $_POST[\"b_post\"], $_POST[\"c_post\"],
I saw some other questions related to this, but they were not MySQL. The database is a live database, so I don\'t want to delete and recreate the table. I s开发者_开发问答imply want to make a column
开发者_JAVA百科To find duplicates you can use sort | uniq -d but is there a quick way to find triplicates?You can use:
im very new to c programming and have done only if/else, loops, arrays, pointers, functions and structs. I would be very glad if anyone could tell me how to create a 2d array which would contain rando
开发者_开发技巧I have a table like the following table: UserIDNum1Num2CodeNameCat 729332:16.0 50:22.0 3Jim 33
I want to write some functions as follows y = f(x) and another function, x = g(y) that acts as a reversible, where
How do I avoid entering the same kind of data from the same users in sharepoint开发者_如何学运维 list?
I have a model that has an id that isn\'t unique. Each model also has a date. I would like to return all results but only the most recent of each row that shares ids. The model looks something like th
In a web application if a user check the Remember Me box I\'m gonna create a cookie and save it in database and assign it to user (long-life cookie).开发者_Go百科 On any page request (page_load) I che
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