SELECT DISTINCTクエリの作成方法

Question

私はカテゴリのリストを持っていますが、私はselect distinctステートメントを使用することができますが、カテゴリが何回使用されたのかを調べるのに苦労します。Descriptionというカラムがあり、

Description 
------------- 
Arts, crafts, and collectibles 
Baby 
Beauty and fragrances 
Books and magazines 
Business to business 
Clothing, accessories, and shoes 
Computers, accessories, and services 
Education 
Electronics and telecom 
Entertainment and media 
Financial services and products 
Food retail and service 
Gifts and flowers 
Government 
Health and personal care 
Home and garden 
Nonprofit 
Pets and animals 
Religion and spirituality (for profit) 
Retail (not elsewhere classified) 
Services - other 
Sports and outdoors 
Toys and hobbies 
Travel 
Vehicle sales 
Vehicle service and accessories 
Books and magazines 
Business to business 
Clothing, accessories, and shoes 
Computers, accessories, and services 
Education 
Electronics and telecom 
Entertainment and media 
Financial services and products 
Food retail and service 
Gifts and flowers 
Government 
Health and personal care 
Services - other 
Sports and outdoors 
Toys and hobbies 
Travel 
Vehicle sales 
Vehicle service and accessories 
Books and magazines 
Business to business 
Clothing, accessories, and shoes 
Business to business 
Clothing, accessories, and shoes 
Computers, accessories, and services 
Education 
Electronics and telecom 
Entertainment and media 
Financial services and products 
Food retail and service 

Answer 1

これは単純な集約のようです。

Select 
    [Description] 
    ,Occurences = Count([Description]) 
From 
    YourTable 
Group By 
    [Description]