While SQL is inherently a declarative language, meaning it focuses on what data to retrieve, rather than how to retrieve it, there are scenarios where we might need to perform iterative operations. SQL provides a few methods to help us loop through records in database management systems likeMyS...
I do not prefer to use cursors as they are slow and will impact performance. As a good practice I always try not to use cursors in my sql code. But, how to loop through table rows without
"Object is currently in use elsewhere" error for picturebox "Parameter is not valid" - new Bitmap() "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...
After INSERT Trigger question - how to use value from last added record Age Bucket in sql Age calculation in report builder query Aggregated CASE expressions versus the PIVOT operator… Is one better than the other? Aging Report SQL Query Alias all columns in a given table Alias column with ...
Recommend to Read:-SQL Query Optimization Tips Stop Running Queries in a Loop Eg: INSERT INTO `abc`(col1,col2,col3) VALUES (a,b,d),(x,y,z),(p,q,r) …. Instead of Eg: for($i =0; $i<10; $i++){ $query = “INSERT...
I am using the following piece of code to retrieve the SQL to the DTO on the BLL. result.data = _dbContext.Database.SqlQuery<sysmstatusgroup_dto>(sqlFinal).ToList(); but then i get an error which says that i cannot use SqlQuery anymore on the new entity framework. Is there a...
Example 3: Using Exit Statement to Terminate a Loop in PostgreSQL Table Use the following query to get data from the orders table and then use the exit statement in the table: SELECT*FROMorders; Running the above code will display all the data from theorderstable: ...
which will only give you the information you actually stored. Without the AVG function, you would have to query the database in a programming language and loop the results to generate an average of a column. But fortunately, you don’t. Let’s get more familiar with the SQL AVG function...
A new query hint is supported in SQL Server 2016 SP1 or above versions. This hint is ENABLE_PARALLEL_PLAN_PREFERENCE. It allows us to force the SQL Server query optimizer to select parallel plan instead of serial plan. We will use ENABLE_PARALLEL_PLAN_PREFERENCE in this query and the Qu...
there are "+"different standard functions. Because the object world has no notion of query, a "+"query can only be represented as a string without compile-time type checking or "+"IntelliSense support in the IDE. Transferring data from SQL tables or XML trees to "+"objects in memory is...