org.springframework.jdbc.BadSqlGrammarException: ### Error querying database. Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and POSITION = 'ST'' at line 6 ### The error may exist in com/example/mybatiswebtest/mapper/PlayerMapper.xml ### The error may involve defaultParameterMap ### The error occurred while setting parameters ### SQL: Select * from test.player where and POSITION = ? ### Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and POSITION = 'ST'' at line 6 ; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and POSITION = 'ST'' at line 6 还是报错

根据你提供的错误信息，问题出在 SQL 查询语句的构建上。错误信息指出在第6行附近的语法存在问题。

从错误信息中的 SQL 查询语句可以看出，`where` 子句中存在一个问题。查询语句中的 `where` 子句缺少一个完整的条件表达式，导致语法错误。

请检查你的代码，确保在 `where` 子句中提供完整且正确的条件表达式。根据你之前提供的代码片段，你可以尝试修改查询语句中的参数传递，以确保生成正确的 SQL 查询语句。

以下是修改建议：

<select id="select">
    Select *
    from test.player
    <where>
        <if test="minAge != null and maxAge != null">
            AGE between #{minAge} and #{maxAge}
        </if>
        <if test="position != null">
            and POSITION = #{position}
        </if>
    </where>
</select>

在这个修改后的代码中，我添加了 `<where>` 元素来包裹条件部分。这样可以确保在存在条件时生成正确的 SQL 查询语句。

如果问题仍然存在，请提供完整的错误信息和相关代码片段，以便我能够更准确地帮助你解决问题。

相关问题

org.springframework.jdbc.BadSqlGrammarException: ### Error querying database. Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and POSITION = 'ST'' at line 6 ### The error may exist in com/example/mybatiswebtest/mapper/PlayerMapper.xml ### The error may involve defaultParameterMap ### The error occurred while setting parameters ### SQL: Select * from test.player where and POSITION = ? ### Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and POSITION = 'ST'' at line 6 ; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and POSITION = 'ST'' at line 6

根据你提供的错误信息，看起来你在执行 SQL 查询时遇到了语法错误。根据错误信息中的提示，问题出现在 `com/example/mybatiswebtest/mapper/PlayerMapper.xml` 文件中的 `defaultParameterMap` 中。

具体来说，错误信息指出 SQL 查询的语法存在问题，特别是在 `where` 子句中存在错误。在你的 SQL 查询中，`where` 子句的条件部分似乎不完整，导致了语法错误。

以下是你提供的错误信息中的 SQL 查询：

Select * from test.player where and POSITION = ?

从这个查询中可以看出，`where` 子句的条件部分缺少一个完整的条件表达式，导致了语法错误。

请检查你的代码，确保在 SQL 查询的 `where` 子句中提供完整且正确的条件表达式。如果你需要更多帮助，请提供相关代码片段，以便我能够更准确地指导你解决问题。

15:42:37.905 [http-nio-8083-exec-3] ERROR c.r.f.w.e.GlobalExceptionHandler - [handleRuntimeException,86] - 请求地址'/api/users/admin/getBackUsersList',发生未知异常. org.springframework.jdbc.BadSqlGrammarException: ### Error querying database. Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') FROM users' at line 1 ### The error may exist in com/ruoyi/chaperonebed/mapper/UsersMapper.java (best guess) ### The error may involve defaultParameterMap ### The error occurred while setting parameters ### SQL: SELECT COUNT() FROM users ### Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') FROM users' at line 1 ; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') FROM users' at line 1

这段错误信息表示在执行`SELECT COUNT() FROM users`语句时发生了语法错误，具体错误信息为`You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') FROM users' at line 1`。这可能是由于SQL语句中的语法错误导致的，可能是由于`COUNT()`函数中未提供要计数的列，导致MySQL无法解析该语句。建议检查SQL语句是否正确，并确保在`COUNT()`函数中提供要计数的列。