Question

我试图从另一个标量值函数（fn_SeqAvgSimilarityUnderNode2）调用表值函数（dbo.fn_SelectAlignedSequences）。这是查询

Create Function [dbo].[fn_SeqAvgSimilarityUnderNode]
    (@AlnID int, @ParentTaxID int, @SeqTypeID int, @LocationID int) 
RETURNS FLOAT
AS
BEGIN
    Declare @AvgSim float

    ;With Seqs (SeqID) as
    (-- All aligned sequences under the node
        select dbo.fn_SelectAlignedSequences(@AlnID, @ParentTaxID, @SeqTypeID, @LocationID)
    )

    Select  @AvgSim = AVG(Similarity)
    From    (
                Select   s1.SeqID
                        ,s2.SeqID
                        ,dbo.fn_pairwiseSimilarity(@AlnID, s1.SeqID, s2.SeqID) as 'Similarity'
                From    Seqs s1 cross join Seqs s2
                Where   s1.SeqID < s2.SeqID
            ) t
    return @AvgSim
END

查询确实有效，但是当我调用函数dbo.fn_SeqAvgSimilarityUnderNode时，会弹出错误。

错误消息“找不到列”dbo“或用户定义的函数或聚合”dbo.fn_SelectAlignedSequences“，或者名称不明确。

我做错了什么？

Answer 1

如果没有看到dbo.fn_SelectAlignedSequences的代码，我很确定你需要指定一个你想要选择的列。

更改此

With Seqs (SeqID) as
    (-- All aligned sequences under the node
        select dbo.fn_SelectAlignedSequences(@AlnID, @ParentTaxID, @SeqTypeID, @LocationID)
    )

这样的事情

With Seqs (SeqID) as
    (-- All aligned sequences under the node
        select ColumnName FROM dbo.fn_SelectAlignedSequences(@AlnID, @ParentTaxID, @SeqTypeID, @LocationID)
    )

Microsoft SQL查询帮助

1 个答案: