SQL Server - How many indexes in a table? - Feb 27, 2010 at
11:50 AM by Shuchi Gauri
How many indexes in a table you can have depends on many factors. Explain those
factors.
Factors on which indexes in a table depend upon:
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There should be indexes on all primary and foreign keys.
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You can escape indexing if the table is small i.e. number of rows is very few.
In such a case, a table scan will be much faster.
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Do data modification statements on that table slow down on addition of indexes?
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Width of indexes.
SQL Server - How many indexes in a table? - May 05, 2009 at
22:00 PM by Rajmeet Ghai
How many indexes in a table you can have depends on many factors. Explain those
factors.
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As the data in a table is modified, each index on the table needs to be
updated. This is certainly an overhead. If the data modification queries are
slowing down, it means that more indexes are used in the table.
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Width of the index also plays an important role. Wider the index, less
problematic it is.
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More the number of modifications on the table in a second, too many indexes
cause performance issues.
SQL Server - How many indexes in a table? - June 21, 2009 at
09:00 AM by Amit Satpute
How many indexes in a table you can have depends on many factors. Explain those
factors.
The number of indexes a table can have depends on:
The performance: If a table has too many indexes associated
with it, the updates or inserts or deletes on it would slow down.
Index Width: Table with more number of narrow indexes could be
less problematic than one with a fewer number of wider indexes.
Modification Frequency: If the table is modified very often,
then a high number of indexes could cause a performance problem during the
database modification.
Also read
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