Data truncated for column 'sex' at row 1 错误
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正确示例
非空约束2(CHAR(2)数据过小会出错)
ALTER TABLE books MODIFY title VARCHAR(50) NOT NULL;
---取消非空
ALTER TABLE books MODIFY title VARCHAR(50) NULL;
错误示例
ALTER TABLE books MODIFY sex CHAR(2) NOT NULL;
错误信息
Data truncated for column ‘sex‘ at row 1
原因
CHAR(2)数据过小会出错
转自csdn
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