Questions Tagged With optimizer
activenewesthottestmost votedunanswered
1
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UNION ALL taking far longer than individual queries

22 Sep '15, 13:14 Justin Willey7.5k
2
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2
answers
1.6k
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Worser Performance on 2nd call of same Statement

22 May '14, 03:21 Volker Barth39.3k
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2
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3.4k
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Does not work inline query optimization using UDF-DETERMINISTIC from "with" in SA 12

15 May '14, 09:52 Nick Elson S...7.3k
3
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3
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4.5k
views

Sybase SA12, 16: Error query optimization with UDF

12 May '14, 10:51 Stalker460
3
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1
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2.2k
views

11.0.1.2405 Indexes not being used - Is this a known Problem?

15 Apr '14, 09:20 Mark Culp24.7k
4
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1
answer
3.0k
views

Low Performance, because statistics aren't used with curent date, current timestamp

23 Apr '13, 11:36 Markus Dütting536
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1
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2.1k
views

SQL Query that hangs

15 Apr '13, 09:48 Jeff Albion10.8k
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1
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1.5k
views

How the optimizer analyzes a query sybase?

29 Jan '13, 22:21 Graeme Perrow9.6k
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2
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2.0k
views

Peformance of IN vs. OR

01 Nov '12, 07:47 Gandalf199
1
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0
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1.5k
views

What does Index scan (all rows) mean?

30 Oct '12, 08:24 Martin8.8k
6
votes
7
answers
3.5k
views

query plan changes radically

29 Oct '12, 07:53 Volker Barth39.3k
2
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5
answers
3.5k
views

Optimizer Not Considering Usage of Index for Query Optimization

22 May '12, 06:28 Volker Barth39.3k
3
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3
answers
2.8k
views

Reusing of query plans

13 Mar '12, 10:03 Volker Barth39.3k
4
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1
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3.2k
views

Calibration best practices

06 Mar '12, 18:46 Mark Culp24.7k
4
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5
answers
4.9k
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Intra-query parallelism

01 Feb '12, 08:19 Volker Barth39.3k
1
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2
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2.0k
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Optimization in functions and procedures

11 Dec '11, 15:10 Volker Barth39.3k
2
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3
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2.4k
views

Force optimizer to choose indexscans

27 Oct '11, 14:49 Jeff Albion10.8k
6
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1
answer
5.0k
views

How is plan caching handled for multiple web service connections?

06 Oct '11, 09:38 Mark Culp24.7k
1
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1
answer
1.7k
views

Has Create Statistics any effect for varchar columns?

26 Jul '11, 12:02 Glenn Paulley10.8k
0
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1
answer
1.6k
views

How can I help the optimizer estimating better?

25 Jul '11, 11:11 Mark Culp24.7k
0
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0
answers
1.3k
views

Why does this plan make sense?

22 Jul '11, 10:32 Martin8.8k
1
vote
1
answer
4.0k
views

View Pushed Predicate

15 Jul '11, 08:35 Volker Barth39.3k
1
vote
1
answer
2.0k
views

Optimization_goal = 'Response-time'

09 Jun '11, 10:35 Volker Barth39.3k
1
vote
1
answer
1.8k
views

Is a reverse index scan distinquished from an index scan?

23 May '11, 10:54 Mark Culp24.7k
0
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1
answer
1.5k
views

Optimizer using the first key word

20 May '11, 13:45 Breck Carter32.5k
1
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1
answer
1.7k
views

Which statistics-level is used by Plan()?

10 Apr '11, 08:33 Glenn Paulley10.8k
0
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1
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2.1k
views

How to calibrate the IO read speed for the query optimizer?

14 Dec '10, 08:17 Martin8.8k
27questions tagged optimizer
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