列出列的所有不同值及其计数

Question

I have a column with different text values. How can I get a list of all the unique values and the count of the appearance of them in the column?

Answer 1

Simplest way is to use GROUP BY

select text_column, count(*) from text_table group by text_column

more info - http://www.w3schools.com/sql/sql_groupby.asp

Answer 2

SELECT column_name
     , COUNT(*)
  FROM table_name
  GROUP BY column_name
;