我有4个oracle SQL查询，我希望在一个结果中包含这些查询

这4个查询生成所需的结果，但是我想将这些查询包装成一个查询，该查询将每个查询作为水平列返回，并垂直返回相应的查询结果

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我已将所有查询限制为rownum通过其rownum连接它们记住别名rownum

select * from 
(
SELECT rownum rownr, a.* FROM (SELECT count(tl.usr) as "Antall oppslag" FROM TABLE tl WHERE 
tl.timestamp >= (sysdate - (1/24)) GROUP BY tl.usr ORDER BY count(tl.usr) desc) a WHERE 
rownum <= 20
) a,
(
SELECT rownum rownr, b.* FROM (SELECT count(tl.usr) as "Antall oppslag" FROM TABLE tl WHERE 
tl.timestamp >= (sysdate - (1)) GROUP BY tl.usr ORDER BY count(tl.usr) desc) b WHERE 
rownum <= 20
) b, 
(
SELECT rownum rownr, c.* FROM (SELECT count(tl.usr) as "Antall oppslag" FROM TABLE tl WHERE 
tl.timestamp >= (sysdate - (7)) GROUP BY tl.usr ORDER BY count(tl.usr) desc) c WHERE 
rownum <= 20
) c,
(
SELECT  rownum rownr, d.* FROM (SELECT count(tl.usr) as "Antall oppslag" FROM TABLE tl WHERE 
tl.timestamp >= (sysdate - (30)) GROUP BY tl.usr ORDER BY count(tl.usr) desc) d WHERE 
rownum <= 20
) d
where a.rownr = b.rownr 
and a.rownr = c.rownr
and a.rownr = d.rownr

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啊，这看起来很完美。在我接受答案之前，让我试一试。很不错的。实际上我以前做过一个非常类似的查询，但是我忘记了a.rownum=b.rownum等等，所以我得到了一个非常糟糕的结果。实际上表引用在子查询中。它是否可以从子查询外部引用？我得到的错误是表a、b、c、d不存在。更具体地说，它是无效的user.table.column、table.column或我所说的a.rownum=b行上的列规范。rownum@Karrax：我认为您应该为rownum使用别名，例如：SELECT rownum rwnum。。。。。。。其中a.rwnum=b。rwnum@JensSchauder，抱歉，a*似乎不起作用。由于某种原因，我无法从子查询检索数据。我不断收到错误消息，a是无效标识。您应该能够使用完整的外部连接和有点复杂的连接条件，或者使用数字1到20的附加表来执行此操作：从选择级别x选择*从双连接级别

select * from 
(
SELECT rownum rownr, a.* FROM (SELECT count(tl.usr) as "Antall oppslag" FROM TABLE tl WHERE 
tl.timestamp >= (sysdate - (1/24)) GROUP BY tl.usr ORDER BY count(tl.usr) desc) a WHERE 
rownum <= 20
) a,
(
SELECT rownum rownr, b.* FROM (SELECT count(tl.usr) as "Antall oppslag" FROM TABLE tl WHERE 
tl.timestamp >= (sysdate - (1)) GROUP BY tl.usr ORDER BY count(tl.usr) desc) b WHERE 
rownum <= 20
) b, 
(
SELECT rownum rownr, c.* FROM (SELECT count(tl.usr) as "Antall oppslag" FROM TABLE tl WHERE 
tl.timestamp >= (sysdate - (7)) GROUP BY tl.usr ORDER BY count(tl.usr) desc) c WHERE 
rownum <= 20
) c,
(
SELECT  rownum rownr, d.* FROM (SELECT count(tl.usr) as "Antall oppslag" FROM TABLE tl WHERE 
tl.timestamp >= (sysdate - (30)) GROUP BY tl.usr ORDER BY count(tl.usr) desc) d WHERE 
rownum <= 20
) d
where a.rownr = b.rownr 
and a.rownr = c.rownr
and a.rownr = d.rownr