What is an index and types of indexes. How many number of
indexes can be used per table ?
Answers were Sorted based on User's Feedback
Answer / rm thirunavukkarasu
Index is used to Retrive the Information in efficient
manner. And query processor perform reliably.
There are 3 types of Index namely
*Cluster based Index
*Non Cluster based Index
*Noncomposite Index
*Compositive Index
*Unique Index
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| Is This Answer Correct ? | 8 Yes | 16 No |
Answer / sandip kumar chaturvedi
index is a data structure that improve the operation on
table.there are two types of index.
1) ordered index.
2) hashed index.
up to 249 clustered indexes per table.
| Is This Answer Correct ? | 20 Yes | 33 No |
source destination distance chennai bangalore 500 bangalore chennai 500 hyd delhi 1000 delhi hyd 1000 bangalore hyd 800 Here chennai to bangalore and bangalore to chennai is same distance. and hyd and delhi also same criteria. Based on the distance i want to display only one row using sql query?
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