In a JPQL query, the parameters are encoded in the query string as either named (preceded by a colon - for example, : age) or positional (preceded by a question mark - for example,? 3).
在JPQL查询中，查询字符串中的参数以命名方式(前面带有冒号，例如：age)或位置方式(前面带有问号，例如？ 3)编码。
Period, exclamation marks, period, question mark, comma, colon.
句号，叹号，句号，问号，逗号，冒号。
Shall we put a comma, a question mark, a dash, or a semi-colon here?
这里该用逗号、问号、破折号还是分号？
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