Question

我有以下SQL字符串：

sSQL_Select = "SELECT distinct local_insurer, subsidiary, location FROM T_WILMA WHERE PARENT=" & lParent_ID & _
                    " AND ACC_YEAR=" & lAcc_Year_ID & " AND ZOMBIE = FALSE GROUP BY local_insurer ORDER BY " & _
                    "subsidiary ASC, location ASC;"

Access会抛出错误，因为我无法执行此操作我需要的是具有独特本地保险公司的所有记录，但是按子公司和位置字段的字母顺序排列不知何故，我似乎从来没有得到正确的结果有任何想法吗？

Answer 1

从查询中删除GROUP BY local_insurer。（distinct将确保您只获得唯一的值组合。）

Answer 2

您收到错误的原因是您没有在GROUP BY中包含SELECT中的所有字段。例如，如果选择a，b，c，则需要GROUP BY a，b，c（或c，b，a ...）。

sSQL_Select = "SELECT distinct local_insurer, subsidiary, location FROM T_WILMA WHERE PARENT=" & lParent_ID & _
                " AND ACC_YEAR=" & lAcc_Year_ID & " AND ZOMBIE = FALSE GROUP BY local_insurer, subsidiary, location ORDER BY " & _
                "subsidiary ASC, location ASC;"

SQL查询组按不同字段，按其他字段排序

2 个答案: