Workbench 建立模型字段说明

[intrinsic column flags]

• PK: primary key (column is part of a pk)
• NN: not null (column is nullable)
• UQ: unique (column is part of a unique key)
• AI: auto increment (the column is auto incremented when rows are inserted)

[additional data type flags, depend on used data type]

• BIN: binary (if dt is a blob or similar, this indicates that is binary data, rather than text)
• UN: unsigned (for integer types, see docs: “10.2. Numeric Types”)
• ZF: zero fill (rather a display related flag, see docs: “10.2. Numeric Types”)