Skip to content
Advertisement

Tag: database

SQL query for descending order by sum of values

I have an Apex Oracle app to do. This is the app description: A touristic destination is defined by its name and description. Each touristic destination has a number of bookings, defined by start date, end date, description, price as in the following example: Touristic destination: Hotel Sunrise, Hawaii Start date: 18-Aug-2014 End date: 01-Sep-2014 Description: One room with breakfast

How to write advance complex SQL Query for below data? [closed]

Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 1 year ago. Improve this question How to write a complex SQL Query? Below information is the old data of users working on different services with

not in in select query

I have similar query in my project. I have been told to find other way to remove not equal to, because index is not used if you do so. I have no other filter condition, can I do some work around to fool optimizer? Answer I have been told to find other way to remove not equal to, is generally

Way to suppress PostgreSQL-Error with custom error

For the last hours I got stuck on the problem, that I want a custom error (“Wrong airline_id. Please check your input again”) over the normal error code (insert or update on table “flightplan” violates foreign key constraint “fk_flightplan_airline”). But no matter what I try, I always get the standard error. Please Help. Answer The custom exceptions should be thrown

How to use relational database with flutter [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Stack Overflow. Closed 1 year ago. Improve this question I’m currently making an app using Flutter. Now I really want the database to be SQL based and not NoSql like Firebase. What could

Advertisement