Question

我正在使用以下代码创建一个表，我没有太多列，但仍然出现错误

Create table corrYear as
Select  a.Symbol ASymbol,b.Symbol BSymbol, corr(a.logp,b.logp) Correlation
From logprofitDEC a join logprofitDEC b
on a.Tdate=b.Tdate
where a.Symbol>b.symbol
And  a.symbol in (select asymbol,bsymbol from pairDec1st2nd)
And  b.symbol in (select asymbol,bsymbol from pairDec1st2nd)
And To_date(a.Tdate,'YYYYMMDD') between  DATE'2013-01-01' AND DATE'2013-12-31' 
And To_date(a.Tdate,'YYYYMMDD') between  DATE'2013-01-01' AND DATE'2013-12-31' 
group by a.symbol,b.Symbol;

错误是

00913.00000-"too many values"

我不知道为什么，通常这是由太多列引起的。该怎么办？

Answer 1

我的猜测是导致错误的是这些行：

And  a.symbol in (select asymbol,bsymbol from pairDec1st2nd)
And  b.symbol in (select asymbol,bsymbol from pairDec1st2nd)

在这两种情况下，subselect返回两列，其中应该只有一列如此：

And a.symbol in (select asymbol from pairDec1st2nd)
And b.symbol in (select bsymbol from pairDec1st2nd)

如果我记得正确的Oracle允许IN谓词中有多个列，如下所示：

And (a.symbol, b.symbol) in (select asymbol,bsymbol from pairDec1st2nd)

虽然我不确定最后一个。

创建表但返回“太多值”错误

1 个答案: