Learn what is the best way to write a SQL query with calculated fields, and how to avoid errors and pitfalls. Follow best practices and tips to test and optimize your queries.

To write a basic SQL query, you need to know the name of the database table and the columns that you want to retrieve. You also need to use a software tool or application that can connect to the ...

Ok, I'm trying to write a query in a stored procedure in SQL Server 2000. Because some of the parts of the query vary based on certain situations I construct a string that contains the query and ...

An alternative - again, if supported - would be to create a view that works the same as the derived table, and use this in your query instead. More options Report Add bookmark Share ...

2 ) Write a query to return the email ids of all the employees in the increasing order of their employee numbers. sol 2 ) use upgrad; select email as emailID from employees order by employeeNumber; 3 ...

Q1: Most Productive Month Description Write a query to find the month number (Eg: 4 corresponds to April) in which the most number of payments were made. List the rounded average film lengths for each ...