Select max and latest value from table in PostgreSQL
I have a table like this: value ts 2.0 1 3.0 5 7.0 3 1.0 2 5.0 4 I need to select max value, min value and value with max ts. Is it possible to do it with one query?…
Mysql – How do I get the years in between 2 dates?
In my table, I have a 'start_date' and 'end_date' column, eg: start_date end_date 2000/12/12 2010/10/12 1988/12/12 2003/04/03 1994/12/12 2008/09/21 What is the statement that I need to use to extract the years between the start & end date? I want…
PHP, DATABASE not displaying poll results
The user submits the response to the poll it's not displaying the results from the database. This is the website http://josietaylor.byethost14.com/poll/ I'm unsure what's wrong and why nothing is showing? I didn't think I needed to add the HOST USER…
How to fetch only 1 row from database – PHP
I want to fetch the id of only 1 row from my database for my change password. So that it will only change the password of that specific id selected. This code says an error, $id is undefined. <?php $connection…
Mysql – Updating record in Database using Django
I am trying to update a record in Database using Django but it adds the same record again. How i can fix it? code is given below. def update(request, id): book = tblbook.objects.get(id=id) form = tblbook(BookID = book.BookID, BookName=book.BookName, Genre=book.Genre,Price=book.Price)…
Composite Key on DynamoDb
I have a single dynamodb table. One of the type records is called "Result" and one of its PK stores a composite key (class, student and exercise). This is the example design: PK SK SCORE ... GSI PK 1 GSI…
Mysql – SQL How to select original(distinct) values from table without using distinct, group by and over keywords?
Currently I'm studying and I received task to write query (join 4 tables: people, goods, orders and order details). So main table Order_details has two columns: Order_id and Good_id, in order to make possible to have many goods in one…
Mysql – Can someone optimize this SQL query?
I am currently working on a project that has 2 very large sql tables Users and UserDocuments having around million and 2-3 millions records respectively. I have a query that will return the count of all the documents that each…
How do I update data in the database in laravel?
This is the code I have written so far: Here is my Controller that contains the edit and update function: public function edit($id){ $post = Posts::find($id); return view('edit', compact('post')); } public function update(Request $request, $id){ $post = Posts::find($id); $validatedRequests =…
Mongodb – how to Push item into array via mongoose?
I'm looking to push this ObjectId from the Notes Schema: 635b70c1121186eefbbc5718 into the 'notesId' of this other Category Schema: { _id: new ObjectId("635b70c0121186eefbbc5714"), name: 'frenchLessons', creator: new ObjectId("635aa97815faaa052ae9cfce"), notesId: [], __v: 0 } What I did was that I found…