The Message Broker Toolkit provides an option — use XPath and ESQL equivalentgrammar - to restrict XPath grammar in order to limit XPath users to equivalent ESQL expression support.
Message Broker Toolkit提供了一个选项“Use XPath and ESQL equivalent grammar(使用XPath和ESQL等效语法)”来限制xpath语法，以便将XPath用户限制在等效esql表达式支持内。
2
The German 'Gymnasium' is the closest equivalent to the grammar school in England.
德语Gymnasium基本上相当于英格兰的文法学校。
《牛津词典》
3
Notice that an equivalent query is simply not possible to express in JPQL, because it has a defined grammar with a fixed number of supported expressions.