MongoDB 管道聚合查询(笔记)
db.term.aggregate([ {KaTeX parse error: Expected ‘EOF’, got ‘}’ at position 24: ...ibrary_id:3607}}̲, {limit:5}, {KaTeX parse error: Expected ‘}’, got ‘EOF’ at end of input: group:{_id:”version”, count: {KaTeX parse error: Expected ‘EOF’, got ‘}’ at position 6: sum:1}̲}}, {sort:{count:-1}} ]
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