The "IGNORE_DUP_KEY" option in Primary Keys and Unique Indexes

Unlike foreign keys, primary keys and unique indexes cannot be “untrusted”. There’s no “NOCHECK” option for unique constraints. The closest there is, is the “ignore_dup_key” option. “Hmm… That sounds interesting”, you must be thinking. But let me stop you right there, buddy. Read this before you go off doing something potentially dangerous… Very, VERY dangerous.… Read More The "IGNORE_DUP_KEY" option in Primary Keys and Unique Indexes