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Re: using Insert Ignore for a specific column only
Posted by: Phillip Ward
Date: November 09, 2022 08:29AM

Quote

ADD UNIQUE INDEX `employee_email_campaign_taxyear` () VISIBLE

The fact that the list of fields (the bit in brackets) is empty is worrying.
Try executing the statement, with the correct field names) directly in the query window: 

ALTER TABLE substantiator.employees
ADD UNIQUE INDEX employee_email_campaign_taxyear ( employee_email, campaign, taxyear ) VISIBLE ;

I seem to recall Workbench having trouble with multi-column "things" (MySQL itself is fine with them).

Regards, Phill W.

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