mongoDB刪除某個欄位(key)

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使用 db.表名.update 配合$unset 使用例如我們的表noPk 有兩個列有欄位名是script_type 我們要刪除script_type=kshell欄位> db.noPK.find(){ "_id" : ObjectId("5a50642b908e6b07a84472a2"), "name" : "javascript", "value" : "vue.js" }{ "_id" : ObjectId("5a50655b908e6b07a84472a3"), "name" : "Xshell", "type" : "script" }{ "_id" : ObjectId("5a506b40908e6b07a84472a4"), "name" : "Xshell", "type" : "script" }{ "_id" : ObjectId("5a506b9d908e6b07a84472a5"), "name" : "Xshell", "type" : "script", "script_type" : "bash_shell" }{ "_id" : ObjectId("5a50703c908e6b07a84472a6"), "name" : "shell", "type" : "script", "script_type" : "kshell" }> 刪除:> db.noPK.update({"name": "shell"}, {$unset:{"script_type":"kshell"}})WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })> db.noPK.find(){ "_id" : ObjectId("5a50642b908e6b07a84472a2"), "name" : "javascript", "value" : "vue.js" }{ "_id" : ObjectId("5a50655b908e6b07a84472a3"), "name" : "Xshell", "type" : "script" }{ "_id" : ObjectId("5a506b40908e6b07a84472a4"), "name" : "Xshell", "type" : "script" }{ "_id" : ObjectId("5a506b9d908e6b07a84472a5"), "name" : "Xshell", "type" : "script", "script_type" : "bash_shell" }{ "_id" : ObjectId("5a50703c908e6b07a84472a6"), "name" : "shell", "type" : "script" }>  

mongoDB刪除某個欄位(key)