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What are the steps you will take to improve performance of a
poor performing query?
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Answer / m.sivakumar
Some general issues that you could talk about would be:
No indexes,
table scans,
missing or out of date statistics,
blocking, excess recompilations of stored procedures,
procedures and triggers without SET NOCOUNT ON,
poorly written query with unnecessarily complicated joins,
too much normalization, excess usage of cursors and temporary
tables.
| Is This Answer Correct ? | 8 Yes | 1 No |
I have a table EMP in which the values will be like this EmpId Ename Sal DeptId 11 Ram 10000 10 11 Ram 10000 10 22 Raj 20000 20 22 Raj 20000 20 33 Anil 15000 30 33 Anil 15000 30 I want to delete only duplicate Rows. After Delete I want the output like this EmpId Ename Sal DeptId 11 Ram 10000 10 22 Raj 20000 20 33 Anil 15000 30
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