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> duplicate unique key on same column

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#1 (permalink)

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02-08-10, 06:28

ankur02018 ankur02018 is offline

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duplicate unique key on same column

Hi,

in the table structure there is duplicate unique key on same column

as well as key also for that column

UNIQUE KEY `FormID` (`FormID`),
UNIQUE KEY `FormID_2` (`FormID`),
KEY `formtracker_formid_index` (`FormID`),

I think duplicate UNIQUE KEY l make effect on insert performance

Is Index Key on column required as UNIQUE KEY is already applied?
will dropping one of the UNIQUE KEY make insert faster?

Last edited by ankur02018; 02-08-10 at 06:46.

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#2 (permalink)

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02-08-10, 08:22

r937

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Quote:

Originally Posted by ankur02018

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I think duplicate UNIQUE KEY l make effect on insert performance

yes, get rid of the duplicate

Quote:

Originally Posted by ankur02018

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Is Index Key on column required as UNIQUE KEY is already applied?

no, so get rid of this, too

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02-09-10, 02:17

ankur02018 ankur02018 is offline

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Quote:

Originally Posted by r937

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yes, get rid of the duplicate

no, so get rid of this, too

Thanks for good suggestion

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