In current feature, it does not support for appending and trimming SQL key-word(e.g. WHERE, AND, SET) like as<where> and<set> provided by xml based scripting language.
So, we need to add the no-dynamic phrase (e.g.WHERE 1 = 1,SET id = id, etc ...) before dynamic parts. I think it is easy writing but it is troublesome rule.

I hope to be enabled to write as follow:

SELECT*FROM names/*[# mybatis:where]*/WHERE/*[# th:if="${firstName} != null"]*/    firstName=/*[('#{firstName}')]*/'Taro'/*[/]*//*[# th:if="${lastName} != null"]*/AND lastName=/*[('#{lastName}')]*/'Yamada'/*[/]*//*[/]*/