MySQL Workbench build table when Pk,nn,uq,bin,un,zf,ai
Source: Internet
Author: User
[Intrinsic column Flags] (basic field type identification)-pk:primary key (column is part of a PK) primary key-Nn:not null (column is nullable) non-null-uq:unique (column is part of a unique key) unique-Ai:auto increment (the column is auto incremented if rows are inserted) self-increment www.2cto.com [additio NAL data type flags, depend on used.
-Bin:binary (if DT is a blob or similar, this indicates is binary data, rather than text) binary (larger binary than text)-Un:u nsigned (for-integer types, see docs: "10.2.) Numeric Types ") integer-Zf:zero fill (rather a display related flag, see docs:" 10.2. The most significant byte in the Numeric Types ") value is always 0, and is not saved. Ps:zf personal understanding refers to data that is equivalent to the amount type of data with a decimal placeholder.
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