APPROX_COUNT_DISTINCT requires less memory than an exhaustive COUNT DISTINCT operation. Given the smaller memory footprint, APPROX_COUNT_DISTINCT is less likely to spill memory to disk compared to a ...

Technical documentation for Microsoft SQL Server, tools such as SQL Server Management Studio (SSMS) , SQL Server Data Tools (SSDT) etc. - MicrosoftDocs/sql-docs ...

In the following article we will go through a solution to a very common requirement of getting count of duplicate rows from sql server table.let us first create a table and add sample data to this ...

I have a table that logs a record containing a userid, a fileid and a date, one record inserted every time that file is downloaded.I want to get the top 10 downloads by count for a given date ...

Hey, been reading the board for a bit. First post. I'm having issues coming up with a SQL query that will provide the average admits for each day of the ...