解析错误:符号处的WHERE标识符无效( [英] Parse Error: Invalid WHERE Identifier at symbol (

问题描述

我正在尝试使用可选参数来获得结果.

I am trying to get a result using an optional parameters.

result = Tester.gql("WHERE (first_name IS NULL OR first_name = :first_name)"
                                "AND (last_name IS NULL OR last_name = :last_name)"
                                "AND (birth_date IS NULL OR birth_date = :birth_date)"
                                "AND (test_voucher IS NULL OR test_voucher = :test_voucher)", first_name=first_name,
                                last_name=last_name, birth_date=birth_date, test_voucher=test_voucher)

但是，使用此GQL脚本时，我在解析时遇到错误.

However, I am getting an error about parsing when I use this GQL script.

{
    "error": {
        "message": "Parse Error: Invalid WHERE Identifier at symbol ("
    }
}

我正在尝试找出我的GQL脚本出了什么问题.预先感谢

I am trying to figure out what is wrong in my GQL script. Thanks in advance

推荐答案

我认为这不是有效的GQL:

I don't think that's valid GQL:

• 没有提及对复合条件使用'('和')'(这是我相信您看到的错误所在)，唯一有效的条件构造是(来自

• GQL中没有OR运算符，因此无需分组，请参见

• there is no OR operator in GQL, so there is no need for grouping, see In Google DataStore GQL, how can I group the WHERE terms? (also complaining about parentheses)

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