jackyji
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there is a table： code model remark 1 a x 2 a x 3 a x 4 b z 5 b z 6 c y 7 c y 8 c y i want to get the record of each model where the code is minimum. the result is: code model remark 1 a x 4 b z 6 c y how can i write the sql?