Re: Huge difference between sqlplus and sqldeveloper - sorting in memory vs disk

Thanks all. The caused is identified. The first subquery block in the WITH 
clause has a where condition:   m_when between  '14-Sep-2011' and 
'14-Nov-2011'  , where m_when is a DATE type. In SQL Plus, this condition 
produces zero row, while SQL developer is smart enongh to translate the string 
to date type, which gives serveral hunderd k number of rows. 
 
- Denis
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