I have a table with ID, start_date and end_date columns. Table: I want to write a query to get the following output: Output: Answer You can do a cumulative sum to solve this variation of the gaps-and-island problem: Demo on DB Fiddle: ID | START_DATE | END_DATE -: | :——— | :——…
Custom select Entity Framework
I want to perform a custom select with Entity Framwork and can not make it good would you help me to figure this SQL select with Entity Framework SELECT DISTINCT Departments.Dept_ID, Departments….
1z0-071 oracle exam question which answers is correct?
Which three statements are true about the Oracle join and ANSI join syntax? The Oracle join syntax supports natural joins. The Oracle join syntax performs less well than the SQL:1999 compliant ANSI …
MySQL Query Help for Multiple Tables
Alright so I’m working on a final assignment and I’m super stuck on this one task. I’ve tried looking it up and reading guides and I got nowhere. To make matters worse, my professor hasn’t bothered to teach us how to do this particular type of task and I can’t bother asking him f…
MySQL get rows starting with specific id after sort / order by
I got this table: I need to order it by score desc: and get first 3 rows which starts with id 6 So the result should be: Is this possible? Thanks in advance Answer With this: See the demo. Results:
Is it possible to create Azure SQL Database master master replication
I am sorry because I’m new to use Azure service. I want two SQL databases (one in Southeast Asia and one in Central US) for high availability or replication master-master. Now I just found two ways to sync both databases. Azure Geo-Replication but the problem is this method use master-slave replication.…
Get data from other table based on column with concatenated values
I have two tables: category with columns: article with columns: I know there should be a separate table for article categories but I was given this. Is it possible to write a query that returns: I thought of splitting the string in article -> categories column, then use in query to extract name from catego…
ELOQUENT – Calculating difference of datetimes in where-clause
I am trying to check if the difference of two columns in my database is under a given amount of years – meaning DATETIME – BIRTHDATE where(date_diff((strtotime(‘…
ORA-00920: invalid relational operator while using IN operator
I have a table col where i have: select * from offc.col; I returned some data using query by year wise ans dept_id wise: SELECT dept_id, year, Max(marks) marks FROM offc.col …
Transposing Column Data into Row Data SQL
I have some data that looks like this in an SQL table. [ID],[SettleDate],[Curr1],[Curr2][Quantity1],[Quantity2],[CashAmount1],[CashAmount2] The issue i have, i need to create 2 records from this …