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Count Instances in Table1 AND link to Table2

开发者 https://www.devze.com 2022-12-09 17:28 出处:网络
Please refer to this background question. After constructing this COUNT, how would I then link each of these \'Prices\' to, for instance, a column called \'Genre\' in TableTwo?

Please refer to this background question.

After constructing this COUNT, how would I then link each of these 'Prices' to, for instance, a column called 'Genre' in TableTwo?

e.g.

Table1: Prices, ID

Table2: Genre, ID

Example output:

PRICES, COUNT, Genre
--------------------
13.99,   2,   Horror
52.00,   3,   Comedy
1.99,    1,   Romance

I should hope this question is easy to follow however I will try to elaborate further on request! Cheers!

EDIT:

Yes, this is a much simpler version of what I'm trying to do. As said in the previous question, I have this field name that I want to count the instances of. Now t开发者_JAVA技巧hat I have this answer(from the previous question), I now want to link this to another table that I have(to help me analyse some data a little better).

For sake of example, let's say we have a Blockbuster branch that has 2 suppliers. In TableOne I have 'Title'. I have now listed each unique value from Title and counted each one (So in the store I have a unique title called 'Dead Man's Shoes' and there is 10 copies. However, I also have a unique title called 'Touch Of Evil' and because this is more popular, there is 100 copies. I now want to see which supplier these two come from (From TableTwo). Therefore

Example output:

Title,            Count,   Supplier
------------------------------------
Dead Man's Shoes,  10,     Supplier1
Touch Of Evil,     100,    Supplier2

Does that help any better?


 SELECT t1.Prices, COUNT(t1.ID) AS TheCount, t2.Genre
 FROM Table1 AS t1
     INNER JOIN Table2 AS t2
         ON t1.ID = t2.ID
 GROUP BY t1.Prices, t2.Genre


You have to user JOIN function. Your query would look something like

SELECT * FROM prices JOIN genres ON ( prices.id = genres.id )

and the result would be what you desire. :)

More on this subject here.

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