MySQL Workbench table editor there are 7 column flags available: PK, NN, UQ, BIN, UN, ZF, AI.

PK - Primary Key
NN - Not Null
BIN - Binary
UN - Unsigned
UQ - Create/remove Unique Key
ZF - Zero-Filled
AI - Auto Incremenent

[출처] MySQL Workbench table editor there are 7 column flags available: PK, NN, UQ, BIN, UN, ZF, AI.