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Results tagged with query-performance
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user 124925
For questions about improving the performance and/or efficiency of database queries.
0
votes
Replacing isnull condition in where clause
I made following changes for the query, which gave better performance.Thanks Joe and Kumar for your suggestions.
SELECT h.deal_date h_date,i.deal_date i_date,h.source_deal_header_id source_deal_heade …
- 27
1
vote
1
answer
284
views
Using table valued function as a table in sql server join
I have a scenario where SQL server using table valued function with joins to many other tables. The function returns many columns, which are not always desirable output for every report, causing lots …
- 27
0
votes
2
answers
123
views
formating date colums causing performance issues
I have a query(written by my previous co-worker) with date columns returned as output but formatted, which s causing performance degradation (for below query returning 10k records, performance degrade …
- 27
2
votes
3
answers
5k
views
Replacing isnull condition in where clause
I have a where clause as follows:
where table1.col1=isnull(table2.col1,table1.col1)
This condition does not utilize the index in table2.col1 and performance is slow.
So I replaced it with following …
- 27
0
votes
Query turned into a CPU gobbling monster
I would recommend to break the query as follows:
--select MAX(SnapshotDate) only once
DECLARE @MAX_SnapshotDate datetime --use the appropriate data type
SELECT @MAX_SnapshotDate=MAX(SnapshotDate) FR …
- 27
-2
votes
1
answer
1k
views
Optimize a query using same temporary table in outer apply
I have a query using outer apply on the same temporary table again(written by someone long back).
It is performing very slow.Please suggest ways to improve.
Thanks in advance.
UPDATE fb
…
- 27