Question

I have two tables

table 1 : id, name, age, gender.
table 2(friend) : id1,id2. (stored only once i.e only one entry for a unique pair)

I need to write a query that takes an id and then return the result set containing the rows from table 1 corresponding to all his/hers friend.

I tried this Query

"SELECT * FROM table1 WHERE id IN ("
+ "(SELECT id2 FROM table2 WHERE (id1="+given_id+")) UNION "
+ "(SELECT id1 FROM table2 WHERE (id2="+given_id+")));"

but it does’nt seem to work says syntax error … could anyone help me with this query.

Efforts appreciated … Thanks a lot

Answer 1

You can do something similar to this.

SELECT * FROM table1 t1, table2 t2, WHERE t1.id = t2.id2