Question

好吧，我有四个桌子，我需要联合前两个，然后与另外两个桌子进行另一个联盟的内部联接，我被卡住了，谢谢

SELECT miRNA, Gene_Symbol FROM 
(SELECT cons.miRNA, cons.Gene_Symbol 
FROM conserved_site_context_scores cons
WHERE cons.miRNA = 'hsa-miR-29c'
UNION 
SELECT noncons.miRNA , noncons.Gene_Symbol 
FROM nonconserved_site_context_scores noncons
WHERE noncons.miRNA = 'hsa-miR-29c'
) AS targetScan

SELECT mirna_name, gene_symbol FROM (
SELECT sc.mirna_name, sc.gene_symbol
FROM hg19_predictions_s_c_aug2010 sc
WHERE sc.mirna_name = 'hsa-miR-29c'
UNION
SELECT oc.mirna_name, oc.gene_symbol
FROM hg19_predictions_0_c_aug2010 oc
WHERE oc.mirna_name ='hsa-miR-29c'
) AS microRNA

INNER JOIN microRNA
ON targetScan.miRNA = microRNA.mirna_name
WHERE targetScan.miRNA = 'hsa-miR-29c';

Answer 1

我猜你在试图找出JOIN上面两个UNION语句的方法？如果是这样，试一试：

SELECT miRNA, Gene_Symbol 
FROM 
   (
   SELECT cons.miRNA, cons.Gene_Symbol 
   FROM conserved_site_context_scores cons
   WHERE cons.miRNA = 'hsa-miR-29c'
   UNION 
   SELECT noncons.miRNA , noncons.Gene_Symbol 
   FROM nonconserved_site_context_scores noncons
   WHERE noncons.miRNA = 'hsa-miR-29c'
) AS targetScan INNER JOIN
   (
   SELECT mirna_name, gene_symbol 
   FROM (
      SELECT sc.mirna_name, sc.gene_symbol
      FROM hg19_predictions_s_c_aug2010 sc
      WHERE sc.mirna_name = 'hsa-miR-29c'
      UNION
      SELECT oc.mirna_name, oc.gene_symbol
      FROM hg19_predictions_0_c_aug2010 oc
      WHERE oc.mirna_name ='hsa-miR-29c'
   ) AS microRNA
      ON targetScan.miRNA = microRNA.mirna_name
WHERE targetScan.miRNA = 'hsa-miR-29c';

我认为您不需要最后的WHERE条件，因为它已经包含在UNION中。

Answer 2

试试这个：

SELECT miRNA, Gene_Symbol
FROM (
       SELECT cons.miRNA, cons.Gene_Symbol
       FROM conserved_site_context_scores cons
       WHERE cons.miRNA = 'hsa-miR-29c'

       UNION

       SELECT noncons.miRNA, noncons.Gene_Symbol
       FROM nonconserved_site_context_scores noncons
       WHERE noncons.miRNA = 'hsa-miR-29c'
    ) AS targetScan
Inner Join
(
   SELECT mirna_name, gene_symbol
   FROM (
    SELECT sc.mirna_name, sc.gene_symbol
    FROM hg19_predictions_s_c_aug2010 sc
    WHERE sc.mirna_name = 'hsa-miR-29c'

    UNION

    SELECT oc.mirna_name, oc.gene_symbol
    FROM hg19_predictions_0_c_aug2010 oc
    WHERE oc.mirna_name = 'hsa-miR-29c'
    )tbl 
)AS microRNA
    ON targetScan.miRNA = microRNA.mirna_name
WHERE targetScan.miRNA = 'hsa-miR-29c';

内部加入两个工会

2 个答案: