Question

我的查询错误如下。你能帮我吗？

错误是由不明确的列引起的。我有一个想法，我不确定。

我认为错误是这里的WorkUID列（含糊不清）：

<isNotEmpty property="uids">
    AND WorkUID IN
    <iterate  property="uids" open="(" close=")" conjunction=",">
      #uids[]#
    </iterate>
  </isNotEmpty>

这是错误：

Cause: SqlMapClient operation; SQL [];   
--- The error occurred while applying a parameter map.  
--- Check the getData-InlineParameterMap.  
--- Check the statement (query failed).  
--- Cause: java.sql.SQLException: Ambiguous column name 'WorkUID'.; nested exception is com.ibatis.common.jdbc.exception.NestedSQLException:   
--- The error occurred while applying a parameter map.  
--- Check the getData-InlineParameterMap.  
--- Check the statement (query failed).  
--- Cause: java.sql.SQLException: Ambiguous column name 'WorkUID'.;
net.extraction.etl.exception.DAOException: Getting work UID by release datetime.
Cause: org.springframework.dao.TransientDataAccessResourceException: SqlMapClient operation; SQL [];   
--- The error occurred while applying a parameter map.  
--- Check the getData-InlineParameterMap.

以下是查询：

<select id="getData" resultClass="java.lang.Integer" parameterClass="java.util.Map" >
    <![CDATA[
            SELECT xrn.WorkUID
            FROM
            (SELECT uow.WorkUID,
                ROW_NUMBER() OVER(PARTITION BY wsh.WorkUID ORDER BY wsh.DT DESC) AS rnk
            FROM UnitWork uow
            INNER JOIN SigHist sh ON  sh.SigUID = uow.SigUID
            INNER JOIN DataCell d ON d.WorkUID = uow.WorkUID
            INNER JOIN WorkStatHist wsh ON (wsh.WorkUID = uow.WorkUID
                                                 AND wsh.WorkUID = d.WorkUID
                                                            AND 8 =
                                                    (SELECT TOP 1 StatusUID
                                                    FROM WorkStatHist(NOLOCK)
                                                    WHERE WorkUID = uow.workUID
                                                    ORDER BY DT DESC))
      WHERE (uow.ReleasedDT > #fromDate#)
            OR (sh.UpdatedDT > #fromDate#)
            AND d.EffectiveTo >= GETDATE() + 1
            ]]>
    <dynamic>
      <isNotEmpty property="toDate">
        <![CDATA[
                        AND d.EffectiveTo < #toDate#
                    ]]>
      </isNotEmpty>
      <isNotEmpty property="uids">
        AND WorkUID IN
        <iterate  property="uids" open="(" close=")" conjunction=",">
          #uids[]#
        </iterate>
      </isNotEmpty>
    </dynamic>
    <![CDATA[
    ) xrn
            WHERE xrn.rnk=1
        ]]>
  </select>

Answer 1

我根本不熟悉MyBatis，所以我不能代表该部分代码，但您的问题似乎与以下部分有关：

<isNotEmpty property="uids">
    AND WorkUID IN
    <iterate  property="uids" open="(" close=")" conjunction=",">
      #uids[]#
    </iterate>
</isNotEmpty>

特别是AND WorkUID IN部分。

您的查询中有多个表以WorkUID作为列，因此它不知道从哪个表中提取它。

看到它被用作每个表的JOIN约束，我们告诉它查看哪个表并不特别重要。

将其更改为以下内容应该清除该错误：

<isNotEmpty property="uids">
    AND uow.WorkUID IN
    <iterate  property="uids" open="(" close=")" conjunction=",">
      #uids[]#
    </iterate>
</isNotEmpty>

带有MyBatis SQL查询的不明确的列

1 个答案: