问题：

oerr ora 1861

01861, 00000, "literal does t match format string"

// *Cause: Literals in the input must be the same length as literals in

// the format string (with the exception of leading whitespace). If the

// "" modifier has been toggled on, the literal must match exactly,

// with extra whitespace.

// *Action: Correct the format string to match the literal.

 

 

解决方案：

to_date('2010-5-1','YYYY-MM-DD')"