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  • MySQL workbench中的PK,NN,UQ,BIN,UN,ZF,AI说明

      

    - 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

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  • 原文地址:https://www.cnblogs.com/zychengzhiit1/p/4550732.html
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