- PK: primary key (column is part of a pk) 主键
- NN: not null (column is nullable) 是否为空 (非空)
- UQ: unique (column is part of a unique key) 唯一索引 (外键)
- AI: auto increment (the column is auto incremented when rows are inserted) 自动增加
- BIN: binary (if dt is a blob or similar, this indicates that is binary data, rather than text) 二进制(比text更大)
- UN: unsigned (for integer types, see docs: “10.2. Numeric Types”) 无符号整型(非负数)
- ZF: zero fill (rather a display related flag, see docs: “10.2. Numeric Types”) 补零 填充0 例如字段内容是1 int(4), 则内容显示为0001
时间: 2024-10-19 21:25:37