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1
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1answer
274 views

Find Duplicate Customers

Okay... I have a table that has customers: -- Individual Table * ID (Internal Unique ID) * IndividualID (External Unique Individual Identifier) * Last Name * First Name * Birth Date * SSN * ... The ...
2
votes
1answer
60 views

Query difference with where condition

I need to find the ids of all rows in a table A without a matching row on table B. Following the answer on this question I'm using a left join like this: select A.id from A left join B on B.id_A = ...
0
votes
2answers
176 views

How can I optimize this query and support multiple SKUs?

My current query only can select one SKU at a time. I can leave salesite_id constant. If there is a way to also have varying salesite_ids that would be good too, but not necessary. Also any ...
5
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2answers
270 views

Fetch the newest row grouped by a column in MySQL

My problem seems like it should have a much simpler solution than what I have come up with. Starting with this data set: log_table +--------+-----------+------------------+---------+ | log_id | ...
3
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2answers
4k views

Is there a more concise way to convert a UTC datetime into a local date only?

I am trying to write a query that groups records based on the local date part only of a UTC datetime field. For example, if my table contains 10/19/2012 2:00:00, then it should get grouped as ...
7
votes
2answers
203 views

Is there way to join every row of TableA to a row of the smaller TableB by repeating TableB however many times are needed?

Sorry for the confusing title, I wasn't sure what to write there. I have a table of a few hundred records. I need to assign each record of this table to a much smaller dynamic table of users, and the ...
9
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3answers
412 views

Are these two queries logically equivalent?

Are these two queries logically equivalent? DECLARE @DateTime DATETIME = GETDATE() Query 1 SELECT * FROM MyTable WHERE Datediff(DAY, LogInsertTime, @DateTime) > 7 Query 2 SELECT * FROM ...
3
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3answers
3k views

Alternative query to this (avoid DISTINCT)

Note: I work with MSSQL 2008, but I guess it's valid for many others DB engines I have this table "Users": UserID User CountryID 1 user 1 1 2 user 2 2 3 user 3 3 4 user ...
1
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1answer
401 views

This refactoring from cursor on a dblink'ed Oracle table OK?

The data is being compared from the local version of the table to one in the contracts linked server. I'm not certain what the goal of this code is in the first place, but I'm trying to get a handle ...
3
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4answers
1k views

Optimize Query with Derived Table

I have the following query select ps.id, ps.title , IFNULL(s.likes,0) as num_likes , IFNULL(s.comments,0) as num_comments , IFNULL(s.ratings,0) as num_ratings , IFNULL(s.views,0) as num_views , ...
1
vote
1answer
224 views

Is my case statement broken by the use of outer apply?

I'm struggling with a case statement not working. Simple enough I need to supply a value of 0 where the question marks are. I have several other case statements which handle separate columns, but this ...