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format code appears twice

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format code appears twice

Oralce中的to_date()函数用于将字符串转换为日期对象,
具体使用格式为: to_date( string, [ format_mask ] , [ nls_language ] )

string1 要转换的字符串. format_mask 可选项,日期转换格式. nls_language 可选项. 指定用于转换字符串的nls language.

[问题] ORA-01810: format code appears twice 可能是像Java那样指定日期格式,比如: to_date('2006-06-01 18:00:00' 'yyyy-mm-dd hh:MM:ss')

而在Oracle中的日期格式是不区分大小写的,所以 mm 出现了两次。正确的写法是: to_date('2006-06-01 18:00:00' 'yyyy-mm-dd hh:mi:ss')



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