命令如下:. *划分企业标准
. *0代表高科技产业,1代表非高科技产业
. gen industry= "1"
. destring industry,replace force
industry contains nonnumeric characters; replaced as byte
. destring ids_1,replace force
ids_1 already numeric; no replace
. replace industry= "0" if ids_1== "2710"|ids_1== "2720"
type mismatch
r(109);
industry的类型是byte, ids_1的类型是Int,
求大神指导


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