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SamC
White Water Yakist
3467 Posts |
 Posted - 2003-08-28 : 15:39:18
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| I need to compare two Firstnames from set U1 and U2.WHERE U1.Firstname like U2.Firstname + '%' or U2.Firstname like U1.Firstname + '%'But that's condition has poor execution time. I need a faster solution, maybe something likeWHERE LEFT(U1.Firstname, X) = LEFT(U2.Firstname, X)Where X is the smaller of the two lengths. (Is there a way to calculate X in the query?)Maybe there's an even better solution out there?Sam |
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tkizer
Almighty SQL Goddess
38200 Posts |
Posted - 2003-08-28 : 16:42:16
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| I'm not sure that you are buying anything, but...WHERE SUBSTRING(U1.Firstname, 1, LEN(U2.Firstname)) = U2.Firstname OR SUBSTRING(U2.Firstname, 1, LEN(U1.Firstname)) = U1.FirstnameTara |
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Optimal compare