Under MySQL, increments and bigIncrements create UNSIGNED columns. This creates a situation where foreign keys cannot be created under MySQL without explicitly marking each foreign key column as ...
For TiDB v6.6.0 and earlier versions, auto-increment columns in TiDB behave the same as in MySQL InnoDB, requiring them to be primary keys or index prefixes. Starting from v7.0.0, TiDB removes this ...
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