Fieldnames (string) contains the names of the fields that are to be read with commas between.

Fieldnames(字符串)包含要读取的字段的名称，字段之间用逗号分隔。

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Fieldnames (string) contains the names of the fields that are to be read with commas between.

Fieldnames(字符串)包含要读取的字段的名称，字段之间用逗号分隔。

youdao