I’ve been fighting this for a long time, but I am not able to construct a query, which would select (and preferably also order by) a count of items in an array. I do have table data like this: And what did I try… also But it sais I’ve tried a lot of different formats but coming from the MS
Tag: sql
SELECT statement to remove empty columns from resultset with variable data
I’ve got a table that has been imported from a CSV as a midstep to gather data into other tables. All columns in this table may be empty but as long as one column has data, is a valid row. Because of this, there may be full rows with empty data, that are not valid to take into consideration. Here’…
Sum whole column plus a single row of another column and display in a third column
here is my problem i do have a query the returns to me this table what i need is to sum all the organic_value where the previa is the same + financial_value of each month so the final table would be any tips how to tackle this problem? Answer That’s a window sum:
Delete all duplicates except first one mysql
I have a table with a column serial_number that is repeated a few times. How would I delete the entire row except the first duplicate? By the following, I can select all the duplicates. But can’t delete. SELECT serial_number, COUNT(*) FROM trademark_merge GROUP BY serial_number HAVING COUNT(*) > 1 An…
Many rows as a result of SELECT SQL
The table consists of the Record and Record author fields. There is an employee table with the Employee and His manager fields. It is necessary to read records from the first table that belong to a specific manager or his employees. I tried like this: Issued: ORA-01427: single row subquery returns more than o…
Dapper stopped pulling joined table after updating the table with a stored procedure
Because I was having this error InnerException = {“Cannot insert explicit value for identity column in table ‘Loan’ when IDENTITY_INSERT is set to OFF.”} So I decided to change it to this stored procedure. Which is inserting the record successfully, after inserting the page will redire…
What is the best way to update data in database using Native Query
Here if one of data in rule object is null apart from rule_id(As it’s necessary) this query will fail, so instead I can format string for each value in Rule object and concat them excluding which has null value in Rule object but is there any better way to do this? Because if there are 100s of columns t…
How to add to INSERT INTO PRIMARY KEY AND FOREIGN KEY
So i have two tables: locations and employees i want locations_id to be the same in employees.locations_id, I am trying to make it all in one statement the erros is this You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘…
Find Gaps in a single date column SQL Server
Good Day everyone, I need your help. I am trying to detect gaps in a single column of the type Date or DateTime in SQL Server. Say we have a list of schools and each school has many records and there is a field of uploadDate. So something like that: My outcome would be something like that: Thank you all.
How do I find the time periods (start and end time) by calculating the difference between two columns?
I have a table that: So, the time period for which the server was offline, the resultant desired table: I tried the following query: I am unable to logically write out the query, the above one certainly does not work. Answer You can use lead():