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Rails参考资料:迁移类型及其限制值/默认值

Gudao Luo2009-07-09 at 18:45发表的

迁移类型 MySQL类型 限制值/默认值
:binary TINYBLOB, BLOB, MEDIUMBLOB, or LONGBLOB2 :limit => 1 to 4294967296 ( default = 65536 )
:boolean TINYINT
:date DATE
:datetime DATETIME
:decimal DECIMAL :precision => 1 to 63 (default = 10) :scale => 0 to 30 (default = 0)3
:float FLOAT
:integer INT :limit => 1 to 11 (default = 11)
:primary_key INTAUTO_INCREMENT PRIMARY KEY
:string VARCHAR :limit => 1 to 255 (default = 255)
:text TINYTEXT, TEXT, MEDIUMTEXT, or LONGTEXT2 :limit => 1 to 4294967296Bytes ( default = 65536Bytes )
:time TIME
:timestamp DATETIME
Hierarchy: previous, next

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