📜  如何在 postgresql 代码示例中添加布尔列

📅  最后修改于: 2022-03-11 15:05:14.154000             🧑  作者: Mango

代码示例2
PostgreSQL supports a single Boolean data type: BOOLEAN that can have three values: true , false and NULL . PostgreSQL uses one byte for storing a boolean value in the database. The BOOLEAN can be abbreviated as BOOL .