select idno as 身份证号, cast(substring(idNo,7,8) as date) as 出生日期, DATE_FORMAT(cast(substring(idNo,7,8) as date), '%m-%d') as 生日 from t_person
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select idno as 身份证号, cast(substring(idNo,7,8) as date) as 出生日期, DATE_FORMAT(cast(substring(idNo,7,8) as date), '%m-%d') as 生日 from t_person
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