I'm sorry for posting such a question, but I really want to know about this, I have used Set, Map, or array filter methods to do the same but it works when I have the first set of arrays with…
I have an array. This an example: $array = ['A', 'B', 'C', 'D'] I would like all possible combination to get the following result: $new_array = [ ['A', 'B'], ['A', 'C'], ['A', 'D'], ['A', 'B', 'C'], ['A', 'B', 'D'], ['A',…
I want to validate Email column and Phone No column as Unique. Phone no is submitted to the Database as a concatenation of calling code and phone no. Here is my code. public function customRegistration(Request $request) { $request->validate([ 'name' =>…
I have a MySQL database table with 15 columns. It has 2 indexes; a primary which is an int (auto increment), and a compound unique index across 4 columns, int, int, int and datetime. The table currently has 5.5M entries,…
Issue I am trying to add a 12 digit long (numeric values only!), unique identifier to a user table that will be given to the users to find each other. Since it will be handed to the users it needs…
I need to put a constraint which will restrict DUPLICATE entries in combination of 2 columns. So I have a customers table, with the below mentioned columns id, first_name, last_name, date_of_birth, gender, email_address, primary_number, secondary_number. What I am expecting is…
I have a table with b-tree index on column A (non-unique). Now I want to add a check for uniqueness of column A and column B combination when inserting, so I want to add a unique composite index (A, B).…
I'm using a Bootstrap multiselect plugin (https://davidstutz.github.io/bootstrap-multiselect/). The documentation says to call the plugin to the forms select id by the following: $('#example').multiselect(); However my page is a timetable with multiple cells that are actually generated by a loop statement.…
i want to remove the duplicates from each array in this json: { "abc": [ "five" ], "pqr": [ "one", "one", "two", "two", "three", "three", "four", "four" ], "xyz": [ "one", "one", "two", "two", "four" ] } output I am…
I want to edit the data held in a view on MySQL. I hadn't realised you could do this but according to this some views are editable. https://dev.mysql.com/doc/refman/8.0/en/view-updatability.html I've just checked the INFORMATION_SCHEMA.VIEWS table and the IS_UPDATEABLE flag is set…