database for school their are two main table student and teacher the creation of table is almost like this create table students ( students_id int, year int ) create table Teacher ( Teacher_id int, year int ) but i what to count total number of people(student + teacher) in each year. example students students…
Convert columns to rows and get the sum of checkboxes in Access
I have an Access database that has checkboxes in on of the tables. I need to get a Sum of the checkboxes but, I want to convert the checkbox columns into rows instead of columns. Here is an example …
Why do I get a conversion failed error when I use my attribute on my WHERE clause but it works when I don’t?
Why is my query returning a result when I run the following query: SELECT MAX(CAST(IssueDate as Date)) FROM (SELECT IssueDate FROM [Transient].[Commissions_TIB] WHERE ISDATE(issuedate) = 1 …
Inconsistent delete query with left join of multiple tables
I have three tables in MySQL v5.6 created by: CREATE TABLE tm ( id INT AUTO_INCREMENT, PRIMARY KEY (id) ); CREATE TABLE th ( id INT AUTO_INCREMENT, PRIMARY KEY (id) ); CREATE TABLE tr (…
SQL : get number of user but order date [closed]
I trying to get how many user i got in a precise day compared to the first order for exemple : “2020-02” = 20, “2020-03” = 20 … etc… I did an sql query like that : SELECT o….
How can I modify the value of an element of my gridview before update in database?
I have a gridview but I want to update a cell value before the update in the database but it doesn’t work In the .aspx file: In the .aspx.cs file: I try to update the row before insert in database with OnRowUpdating but it doesn’t change the value. Someone have any idea how to do it ? Answer I hav…
How to get data for past X weeks in redshift?
I have a below query which I run gives me the single count for previous week which is Week 44. Current week is 45 as of now. with data_holder as ( with tree_post as (Select contractid as conid, max(…
Token unkown error in stored procedure when updating on external database
I am using Firebird and I want to create a stored procedure to do an update in another database and I do not understand what I am missing because when compiling it gives me the following error: can’t format message 13:896 — message file C:WINDOWSfirebird.msg not found. Dynamic SQL Error. SQL error…
Problems with JPA Hibernate Query with ‘Interval’
I need the possibility to retrieve the orders for the past 6 months for my backend application. After some research , I’ve found out that JPA does not support the INTERVAL definition. Is there a workaround for archiving this particularly function ? Answer In that case use the JPA provided functionality …
How to use sum in where clause in SQL?
I want to execute this query: Select Environment, SUM(Scores) as `Scores`,SUM(Clicks) as `Clicks` from Example.table where Scores > sum(Scores) group by Environment But it …