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 ...

APPROX_COUNT_DISTINCT( expression ) evaluates an expression for each row in a group, and returns the approximate number of unique non-null values in a group. This function is designed to provide ...

Sometimes in mysql we have to count the values that are comma separated from a field in mysql. For this we will use the length function in mysql as follows: Here, first we will count the number of ...

In this MySQL challenge, your query should return the names of the people who are reported to (excluding null values), the number of members that report to them, and the average age of those members ...

Example 15: Counting Missing Values with a SAS Macro ... This example uses a SAS macro to create columns. The SAS macro is not explained here. See the SAS Guide to Macro Processing for complete ...