批量转换
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MongoDB批量将时间戳转为通用日期格式示例代码
``javascript,db.collection.aggregate([, {, $addFields: {, date: {, $dateToString: {, format: "%Y-%m-%d",, date: "$timestamp", }, }, }, },]),``
``javascript,db.collection.aggregate([, {, $addFields: {, date: {, $dateToString: {, format: "%Y-%m-%d",, date: "$timestamp", }, }, }, },]),``