SQL IN and AND clause output - sql

Question

I have written one small query like below. It is giving me output.
select user_id
from table tf
where tf.function_id in ('1001051','1001060','1001061')
but when i am running query like below it is showing 0 out put.however i have verified manually we have user_id's where all the 3 function_id's are present.
select user_id
from table tf
where tf.function_id='1001051'
and
tf.function_id='1001060'
and
tf.function_id='1001061'
it looks very simple to use AND clause. However i am not gettng desired output. AM i doing something wrong?
Thanks in advance

Answer 1

Is this what you want to do?
select tf.user_id
from table tf
where tf.function_id in ('1001051', '1001060', '1001061')
group by tf.user_id
having count(distinct tf.function_id) = 3;
This returns users that have all three functions.
EDIT:
This is the query in your comment:
select tu.dealer_id, tu.usr_alias, tf.function_nm
from t_usr tu, t_usr_function tuf, t_function tf
where tu.usr_id = tuf.usr_id and tuf.function_id = tf.function_id and
tf.function_id = '1001051' and tf.function_id = '1001060' and tf.function_id = '1001061' ;
First, you should learn proper join syntax. Simple rule: Never use commas in the from clause.
I think the query you want is:
select tu.dealer_id, tu.usr_alias
from t_usr tu join
t_usr_function tuf
on tu.usr_id = tuf.usr_id
where tuf.function_id in ('1001051', '1001060', '1001061')
group by tu.dealer_id, tu.usr_alias
having count(distinct tuf.function_id) = 3;
This doesn't give you the function name. I'm not sure why you need such detail if all three functions are there for each "user" (or at least dealer/user alias combination). And, the original question doesn't request this level of detail.

Answer 2

Using 'AND' clause mean that the query should satisfy all of the conditions.
in your case, you need to return either when the function_id='1001051' OR function_id='1001060'.
So in brief you need to replace the AND by OR.
select user_id from table tf
where tf.function_id='1001051' OR tf.function_id='1001060' OR tf.function_id='1001061'
Thats what the IN do, it compares with either of them.

Answer 3

As I pointed out in the comment, AND is not the right operator since all three conditions together will not be met. Use OR instead,
select user_id from table tf
where tf.function_id='1001051' OR tf.function_id='1001060' OR tf.function_id='1001061'

Answer 4

You're asking for the value to be three different values at the same time. A better use would be to use OR instead of AND:
select user_id from table tf
where tf.function_id='1001051' or tf.function_id='1001060' or tf.function_id='1001061'

Answer 5

If all of these things are true:
tf.function_id='1001051'
tf.function_id='1001060'
tf.function_id='1001061'
Then simple algebra tells us this must also be true:
'1001051'='1001060'='1001061'
Since that clearly can't ever be true, your SQL statement's where clause will always resolve to false.
What you want to say is that any of those conditions is true (which is equivalent to in), which means you need to use or:
SELECT user_id
FROM table tf
WHERE tf.function_id = '1001051'
OR tf.function_id = '1001060'
OR tf.function_id = '1001061'
The where clause applies to each row returned by the query. In order to gather data across rows, you either need to join the table to itself enough times to create a single row that satisfies the condition you're looking for or use aggregate functions to consolidate several rows into a single row.
Self-join solution:
SELECT user_id
FROM table tf1
JOIN table tf2 ON tf1.user_id = tf2.user_id
JOIN table tf3 ON tf1.user_id = tf3.user_id
WHERE tf1.function_id = '1001051'
AND tf2.function_id = '1001060'
AND tf3.function_id = '1001061'
Aggregate solution:
SELECT user_id
FROM table tf
WHERE tf.function_id IN ('1001051', '1001060', '1001061')
GROUP BY user_id
HAVING COUNT (DISTINCT tf.function_id) = 3

Answer 6

Try this as this link SQL IN
select function_id, user_id from table tf
where tf.function_id in ('1001051','1001060','1001061')