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  • Caused by: org.postgresql.util.PSQLException: ERROR: operator does not exist: character varying = integer

    Springboot项目,使用postgresql数据库,mybatis做持久层框架,

    1 <select id="select" resultMap="BaseResultMap" parameterType="com.vo.TestVo">
    2         select 
    3             <include refid="Base_Column_List" />
    4         from test
    5         where state='2'
    6         <if test="comCode != null" >
    7             and com_code=${comCode}
    8         </if>
    9     </select>

    comcode的形式如:'1100'

    执行查询时报错:

    ### The error may exist in file [D:workspaceAlleclipseWorkspace	est	argetclassesmappercustom	estQcTestDao.xml]
    ### The error may involve com.dao.TestDao.select-Inline
    ### The error occurred while setting parameters
    ### SQL: select          id, comcode,name   from test   where state='2'        and com_code=00000000
    ### Cause: org.postgresql.util.PSQLException: ERROR: operator does not exist: character varying = integer
      建议:No operator matches the given name and argument type(s). You might need to add explicit type casts.
      位置:286
    ; bad SQL grammar []; nested exception is org.postgresql.util.PSQLException: ERROR: operator does not exist: character varying = integer
      建议:No operator matches the given name and argument type(s). You might need to add explicit type casts.
      位置:286] with root cause
    org.postgresql.util.PSQLException: ERROR: operator does not exist: character varying = integer
      建议:No operator matches the given name and argument type(s). You might need to add explicit type casts.
      位置:286

     解决方法:

    1 <if test="comCode != null" >
    2       and com_code=#{comCode,jdbcType=VARCHAR}
    3 </if>
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  • 原文地址:https://www.cnblogs.com/mySummer/p/9262628.html
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