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AskSQLTeam
Ask SQLTeam Question
0 Posts |
 Posted - 2002-09-09 : 09:04:42
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| tuancan writes "I'm coding an ASP application which uses SQL Server as back-end. In my SELECT statement, i must use LIKE keyword. But my table has much data (above 1,000,000 rows). I try to use index some field, but it very slow. How to performance speed in searching? Thanks!" |
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MichaelP
Jedi Yak
2489 Posts |
Posted - 2002-09-09 : 11:15:15
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| If I recall....Doing this will ALWAYS result in a table scan (not using the indexes)SELECT * FROM MyTable WHERE myfield LIKE '%blah%'Doing this will should result in a index scan / seek (assuming you have an index on myfield)SELECT * FROM MyTable WHERE myfield LIKE 'blah%'Michael<Yoda>Use the Search page you must. Find the answer you will.</Yoda> |
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ehorn
Master Smack Fu Yak Hacker
1632 Posts |
Posted - 2002-09-09 : 11:26:00
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| Try a search on this site using the following keywords:SOUNDEX DIFFERENCEThese techniques may provide alternatives. |
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Performance speed in searching?????