Update query using Subquery in Sql Server
you can join both tables even on UPDATE statements, SQLFiddle Demo for faster performance, define an INDEX on column marks on both tables. using SUBQUERY SQLFiddle Demo
Database
Find out the history of SQL queries
An update SQL query was executed on the server, which caused many problems later. How can I get the list of update queries executed in last 2 months, so that I can trace the exact problematic SQL query?
SQLite string contains other string query
Using LIKE:
How to implement LIMIT with SQL Server? [duplicate]
Starting SQL SERVER 2005, you can do this… or something like this for 2000 and below versions…
How do you query for “is not null” in Mongo?
I would like to execute a following query: What should be the correct syntax?
CASE IN statement with multiple values
Yes. You need to use the “Searched” form rather than the “Simple” form of the CASE expression
GROUP_CONCAT comma separator – MySQL
I have a query where I am using GROUP_CONCAT and a custom separator as my results may contain commas: ‘—-‘ This all works well, however it is still comma separated, so my output is: How can I make it so the output is: I thought this was the idea of a custom separator! Failing that, … Read more
Filter data based on date in sql
Since you have not mentioned about any errors, if START_DATE and END_DATE are DATETIME data type, there is nothing wrong with your query. If you are not getting the correct records, Please check the data. However your date format may trouble you in a different server. There are some good practices you could adhere to … Read more
MySQL LIKE IN()?
A REGEXP might be more efficient, but you’d have to benchmark it to be sure, e.g.
SUM OVER PARTITION BY
You could have used DISTINCT or just remove the PARTITION BY portions and use GROUP BY: Not sure why you are dividing the total by the count per BrandID, if that’s a mistake and you want percent of total then reverse those bits above to: