Question 115315 in Mongodb Question posted in
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Negating string in mongodb

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I’m working with node and mongo 5. I am trying to select the field "TOTAL DUE" with a value other than ‘$0.00’ . I think I’m able to select for ‘$0.00’ with:

{'TOTAL DUE': {$regex: /$0./}}

as in the screenshot. However trying to negate this with:

{'TOTAL DUE': {$not :{$regex: /$0./}}}

gives the entire data set (including when TOTAL DUE does not exist),

How can I get this working?

edit:

[
  {
    "_id": {
      "$oid": "6386d07324da3f53abd52449"
    },
    "RowId": 0,
    "ParcelUse": "2",
    "UseDefinition": "",
    "TotalFCV": 22400,
    "Map": 0,
    "Plat": 0,
    "lat": 32.44123,
    "long": -110.7572,
    "zip": "85712-5433",
    "totalDue": 0,
    "AMOUNT": "$0.00",
    "CERT NO  ": "",
    "FEES": "$0.00",
    "INTEREST": "$0.00",
    "INTEREST DATE": "",
    "INTERESTPERCENT": "",
    "PAY": "",
    "PENALTIES": "$0.00",
    "TAX YEAR": "",
    "TOTAL DUE": "$0.00"
  }
]
Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    It turned out that what worked in my case was:

    {$and: [{'TOTAL DUE': {$exists: true}},{"TOTAL DUE": {$ne: "$0.00"}}]}

    The problem must be that not all over the documents had the 'TOTAL DUE' field. I didn't know that this would be a problem.


  2. 0

    Matching just /$0./ will miss values less than $1.

    If the zero due string will always be "$0.00", you can use an inequality match like:

    "TOTAL DUE": {$ne: "$0.00"}

    Playground

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