我收到一条错误消息，指出我的 Access 查询中的表达式太复杂

Question

 SELECT dbo_job.job_date, 
        dbo_job.job, 
        dbo_job.suffix, 
        dbo_job.item, 
        qry_SumCost.SumMatlPlan, 
        qry_SumCost.SumMatlAct, 
        ([qty_released]*[fixovhd_rate])/[pcs_per_lbr_hr] AS lbr_cost_plan,       
        qry_LaborHours.fixovhd_t_lbr, 
        [fixovhd_t_lbr]/[qty_complete] AS [FG Actual Price]
  FROM  qry_SumCost 
  INNER JOIN (dbo_job 
      INNER JOIN qry_LaborHours 
          ON (dbo_job.job = qry_LaborHours.job) 
          AND (dbo_job.suffix = qry_LaborHours.suffix)) 
       ON (qry_SumCost.job_date = dbo_job.job_date) 
       AND (qry_SumCost.job = dbo_job.job) 
       AND (qry_SumCost.suffix = dbo_job.suffix)
   GROUP BY dbo_job.job_date, 
            dbo_job.job, 
            dbo_job.suffix, 
            dbo_job.item, 
            qry_SumCost.SumMatlPlan, 
            qry_SumCost.SumMatlAct, 
            ([qty_released]*[fixovhd_rate])/[pcs_per_lbr_hr],                
            qry_LaborHours.fixovhd_t_lbr, 
            [fixovhd_t_lbr]/[qty_complete]
     HAVING (((dbo_job.job_date) Between [Forms]![MainForm]![Text2] 
                                        And [Forms]![MainForm]![Text6]) 
              AND ((dbo_job.job) Like "BM0*" 
                  Or (dbo_job.job)     Like "WT0*"));

当我删除表达式 [fixovhd_t_lbr]/qty_complete] 时它工作正常，但是当我包含它时它给我错误 "This expression is typed incorrectly, or its is too complex to be evaluated. For example, a numeric expression may contain too many complicated elements. Try simplifying the expression by assigning parts of the expression to variables." 我不明白这是怎么回事可以被认为是复杂的。该表达式的两个元素都直接来自两个不同的表，并且本身不是表达式（如果有人想知道的话）。我很肯定这是由于这个原因，因为通过排除过程我偶然发现这是问题所在。

Answer 1

您的查询没有意义。您正在使用 group by，但没有聚合函数。这意味着 having 子句中的条件可以移动到 where 子句中，您可以改用 select distinct。

所以，也许这会解决您的问题：

 SELECT DISTINCT dbo_job.job_date, 
        dbo_job.job, 
        dbo_job.suffix, 
        dbo_job.item, 
        qry_SumCost.SumMatlPlan, 
        qry_SumCost.SumMatlAct, 
        ([qty_released]*[fixovhd_rate])/[pcs_per_lbr_hr] AS lbr_cost_plan,       
        qry_LaborHours.fixovhd_t_lbr, 
        [fixovhd_t_lbr]/[qty_complete] AS [FG Actual Price]
  FROM  qry_SumCost INNER JOIN
        (dbo_job INNER JOIN
         qry_LaborHours 
         ON (dbo_job.job = qry_LaborHours.job) AND
            (dbo_job.suffix = qry_LaborHours.suffix)
       ) 
       ON (qry_SumCost.job_date = dbo_job.job_date) AND
          (qry_SumCost.job = dbo_job.job) AND
          (qry_SumCost.suffix = dbo_job.suffix)
WHERE (((dbo_job.job_date) Between [Forms]![MainForm]![Text2] And
                                   [Forms]![MainForm]![Text6]) And
        ((dbo_job.job) Like "BM0*" Or (dbo_job.job) Like "WT0*"));

我收到一条错误消息，指出我的 Access 查询中的表达式太复杂

I am getting an error that the expression in my Access Query is too complex

sql

ms-access-2007

ms-query

ms-access-2010