Ensuring that queries are performant or that they fit the context that you’re working in is a whole other thing. That’s why this SQL tutorial will provide you with a small peek at some steps that you can go t
Now that you understand the various date data types, we can move on to the functions you can use for date conversion in SQL Server. Here are some of the various ways to convert data in SQL. CAST CASTis a built-in SQL conversion function that converts a value from one data type to a...
Start by downloading one of these options, then talk to your company’s IT department about how to connect to your database. Your option will depend on your product's back end, so check with your product team to ensure you select the correct one. To learn how to write an SQL query, ...
The difference here is that I’ve used ISNULL(…,0). This simply tests if the calculated value IS NULL, and if so, replaces it with 0. Calculated value could be NULL if there is not data (we’ve used LEFT JOIN) Let’s see what this query returns. “How to write a complex ...
SQL Server date and time functions FunctionDescription GETDATE() Returns the current date and time DATEPART() Returns part of the date DATEDIFF() Calculates the difference between two dates SYSUTCDATETIME Returns the system date and time in UTC CONVERT() Converts date and time to different forma...
"Recursive write lock acquisitions not allowed in this mode.? "Settings" in DLL project properties and app.config file "The function evaluation requires all threads to run" while accessing music library through wmp.dll "The left-hand side of an assignment must be a variable, property or indexe...
I am currently migrating my asp.net project to asp.net core as per my clients requirement and I am stuck with a specific part for which i will need your help of. I am using the following piece of code to retrieve the SQL to the DTO on the BLL. ...
If you’ve been developing in SQL Server for any length of time, you’ve no doubt hit this scenario: You have an existing, working query that produces results your customers or business owners say are correct. Now, you’re asked to change something, or perhaps you find out your existing...
When retrieving data from a database, you may need to refer to more than one table at a time. In Structured Query Language (SQL), you can use the UNION ope…
Sign in to vote Hello I want to create a sql server procedure who subtract two columns and give its result to the last new added column.Suppose i have two currency fields in columns...