MySQL Group By
Data can be grouped by “group by” key-word.
group by FieldName;tbllibrary table structure and current status of the tbllibrary.
select * from tbllibrary;
Group by the writer and count the records for each writer.
select writer, count(*) from tbllibrary group by writer;
Explanation
There are four groups by “writer” in the table “tbllibrary”;
