ACCESS 组合字段 order by 出错

SELECT boardID,boardType,parentID,child,depth,rootID,(parentStr + ‘,‘ + boardID) AS parentStr_order FROM comp_Type ORDER BY rootID,(parentStr + ‘,‘ + boardID)

or

SELECT boardID,boardType,parentID,child,depth,rootID,(parentStr + ‘,‘ + boardID) AS parentStr_order FROM comp_Type ORDER BY rootID,7

ACCESS 组合字段 order by 出错

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