由 ORDER BY 數值 %1 所識別的 SELECT 項目中所包含的某個變數為識別資料行位置之運算式的一部份。只有由參考資料行名稱的運算式執行排序時,才能使用變數。
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English version
The SELECT item identified by the ORDER BY number %1 contains a variable as part of the expression identifying a column position. Variables are only allowed when ordering by an expression referencing a column name.