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The query will scan every row in the table unless the column happens to be the leading column in an index. Scanning large tables can impact performance. You may want to restore a backup of the database to a non-production location and do your research there. It would be advisable to test the fixes there as well, then run CHECKDB to ensure you have resolved the data issue, and then run those fixes in production.
__________________________________________________________________________________________________ There are no special teachers of virtue, because virtue is taught by the whole community. --Plato
Believe you can and you're halfway there. --Theodore Roosevelt
Everything Should Be Made as Simple as Possible, But Not Simpler --Albert Einstein
The significant problems we face cannot be solved at the same level of thinking we were at when we created them. --Albert Einstein
1 apple is not exactly 1/8 of 8 apples. Because there are no absolutely identical apples. --Giordy
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