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KB-1413 MySQL Best Practices - Primary Key or unique index on every table - Appian Knowledge Base - Support - Appian Community
mySQL unique grey or blue icon? [SOLVED] - Databases - SitePoint Forums | Web Development & Design Community
Tobias_Petry.sql on Twitter: "⚡️ Database Tip Sometimes you want to make columns unique but you can't because e.g. there are still soft-deleted rows in the table witht the same value. By only
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