Suppose a table is having lots of email Ids. We need the distinct email engine service providers. Like for an example..
id | EmailID
-------------
1 | aa#gmail.com
2 | bb#yahoo.com
3 | cc#outlook.com
4 | dd#aol.com
5 | ee#gmail.com
So we saw, four(4) distinct email ID providers are there Gmail,Yahoo,Outlook,AOL.
What SQL query should we use to find out the distinct email engine provider (i.e. where this EmailID after '#' are different and could be same after .com)
Kindly help me.
select Distinct substring(EmailID,charindex('#',EmailID,1)+1,len(EmailId))
from Table1
If you want extract only words like gmail,yahoo,outlook,outlook
Then try the below Query.
select
Distinct
substring(EmailID,
charindex('#',EmailID,1)+1,
charindex('.',EmailID,charindex('#',EmailID,1)+1)-charindex('#',EmailID,1)-1)
from Table1
Related
I have Problem statement in Apache Phoenix in which I need to combine three tables for the result.
I have three views over Hbase table, Schema is as follow
Table group:-
pk | Title | ownerId | data
Table Members:-
pk | parentId | Email | data
Table userinfo:-
pk | Email | First Name | Last Name
Now, I want to fetch groups whose title matches with input string if not matched then want to fetch groups whose members have a name that matches with the input string.
I already tried query as follow:-
select * from Group where pk like 'Prefix_%'
and (TITLE like '%A%'
or (OWNER_ID in
(
select parentId from MEMBERS where EMAIL in
( select distinct(EMAIL) from USER_INFO
where pk like 'PREFIX%' and
( FIRST_NAME like '%A%' or LAST_NAME like '%A%')
)
)
) ) order by TITLE limit 5;
But, it's taking too much time also tried Left Join Query with similar but not give expected result.
Please Suggest how can I improve this?
Hello as the title suggest I need help writing a query that does this. I need to find all the users who have had a badge number change. So in the database there are often two records for the same person but both have a different badge number. Im assuming it's the same person if the social matches.
Table:
Badge_no | SSN
123123 | 387-47-1234 2
34837 | 387-47-1234
837532 | 543-45-6392
584391 | 543-45-6392
In this case I would want it to output:
837532 | 543-45-6392
584391 | 543-45-6392
Thank you!
I believe the following should do the trick here:
SELECT *
FROM yourtable
WHERE SSN IN (SELECT SSN FROM yourtable GROUP BY SSN HAVING Count(*) >=2);
That subquery will return SSN's that have more than one record. We use those SSN's to select, again, from the table to get all of the fields associated to them.
I am trying to do a SELECT to get the offers a certain user have earned. However, I cannot figure how to do it.
I have three tables
user: id | name
offer: id | name
user_offer: id | user_id | offer_id
How do I select all offer the user 1 has?
This should work:
SELECT offer.name
FROM offer INNER JOIN user_offer
ON user_offer.offer_id=offer.id
WHERE user_offer.user_id='1'
I am currently trying to simulate the group_concat function in MySQL to MSSQL. I have followed code formats found in here and here. The problem is, when I try to execute the query, I get the message Ambiguous column name for my column RoleID. Here is my query:
select UserName, RoleID from tb_UserInRoles
cross apply(
select RoleName from tb_Roles
where tb_UserInRoles.RoleID = tb_Roles.RoleID
for XML Path('')
) fxMerge (RoleID) group by UserName, RoleID
I'd like to know why this particular code format present the Ambiguous column name error message. I need to make this query work and understand it. Thanks in advance for the help.
I plan on using this in a many-to-many relationship table, wherein users of a system can have multiple roles, like this:
| User | Role |
|--------|---------|
| JamesP | Maker |
| JamesP | Approver|
| JamesP | Admin |
I want the result query to be like this:
| User | Role |
|--------|--------------------------|
| JamesP | Maker, Approver, Admin |
Try this:
SELECT UIR.UserName, MAX(STUFF(fxMerge.RoleID, 1, 1, ''))
FROM tb_UserInRoles UIR
CROSS APPLY(
SELECT ',' + RoleName
FROM tb_UserInRoles UIR1
INNER JOIN tb_Roles RM ON UIR1.RoleID = RM.RoleID
WHERE UIR.UserName = UIR1.UserName
FOR XML PATH('')
) fxMerge (RoleID)
GROUP BY UIR.UserName
I feel like an idiot asking this...
Table 1: users
id serial
person integer
username char(32)
Table 2:persons
id serial
name char(16)
Can I run a query that returns the name field in persons by providing the username in users?
users
1 | 1 | larry123
persons
1 | larry
2 | curly
SQL?
select name from persons where users.person=persons.id and users.username='larry123';
with the desired return of
larry
I have been doing it with two passes until now and think maybe a nested select using a join is what I need
1 | larry
It sounds like you're asking how to do a join in SQL:
SELECT
name
FROM
users JOIN persons ON (users.person = persons.id)
WHERE
users.username = 'larry123';
that is almost the query you wrote. All you were missing was the join clause. You could also do that join like this:
SELECT name
FROM users, persons
WHERE
users.person = persons.id
AND users.username = 'larry123';
I suggest finding a well-written introduction to SQL.