Fetch data from two tables?

Question

I have two tables Say Table-A and Table-B

Table-A

id | Article Name |date
1  | ABC          | 25/2/2011
2  | xyz          | 26/2/2011

Table-B

id | Comment             


        

Answer 1

select Table_A.*, count(*) as 'NoC' from Table_A 
inner join Table_B on Table_A.id = Table_B.idart 
group by Table_A.id

Answer 2

Something like this should do (untested, not at home):

SELECT Table-A.id, Table-A.article-name, Table-A.date, (SELECT COUNT(id) FROM Table-B WHERE Article-id=Table-A.id) AS NumberOfComments FROM Table-A;

Answer 3

I think this is the query you are after. I didn't test it to be sure there are no typos. You are basically joining on Table-B, and then grouping the results back down to just those from Table-A, but counting how many "joins" were made.

SELECT [Table-A].id, [Article Name], date, COUNT(*) As NumberOfComments
FROM [Table-A]
LEFT JOIN [Table-B] On [Article-id] = [Table-A].id
GROUP BY [Table-A].id, [Article Name], date