Ruby操作MongoDB(进阶九)-批量操作Bulk Operations
coll=client['documents']coll.bulk_write([{:insert_one=>{:x=>1}},
{:update_one=>{:filter=>{:x=>1},
:update=>{'$set'=>{:x=>2}}}
},
{:replace_one=>{:filter=>{:x=>2},
:replacement=>{:x=>3}
}}
],:order=>true)
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