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I used the script from this blog to identify the unused index on my database. It returns an index which is on a column called result where I have a check constraint on that column.

So removing this index will impact the check constraint performance?

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will removing this index impact the check constraint performance?

No, it will not.

Check constraints only operate on the columns of a single row, not on multiple rows. So it is completely unaffected by the existence (or absence) of an index.

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