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wangjie2013
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Parameter index out of range (1 > number of parameters, which is 0).

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    ExceptionParameter index out of range (1 > number of parameters, which is 0).

 

    在使用jdbc是出现这个错误,原因是在使用占位符(?)的时候,用单引号括起来了,这个问题在拼接复杂sql语句的时候常常出现。

 

    错误:SELECT * FROM doctor WHERE docName = '?'

    正确:SELECT * FROM doctor WHERE docName = ?

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