date - split string based on character position in ORACLE 11g SQL -

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i'm using oracle 11g sql developer

i have varchar2 column dates 0523 (mmdd).

i want convert them date column , have them 23-05 (dd-mm)..

any ideas?

well, can string operations directly format want:

substring(c, 3, 2)||'-'||substring(c, 1, 2)

to convert date, can use:

to_date('2012'||c, 'yyyymmdd')

to convert date form want:

to_char(<date>, 'dd-mm')

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