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Select SQL: In clause

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Last Modified: 2013-12-18
Hello experts,

database: SQL Server, Oracle 10g

I wonder whether my SQL below has a huge performance impact on query performace, i mean when the number of value in the IN clause ranges from several thousand:

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select fieldName from tableName where field2 in (1,2,3,4,...)
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When i need to select rows from a table constraint by a variety of value from a single column, can you recommend what is the  best way to achieve with regard to query performance?


Thanks,

borama
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