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I need to understand this query as best as possible, thanks
substr(b_Aplicacion,1,4)
|| '-'
|| substr(b_Aplicacion,5,2)
|| '-'
|| substr(b_Aplicacion,7,2)
I assume you’re aware of how the
substr()function works. (If not, here’s an explanation.)In PLSQL
||is a string concatenation operator.Example:
'left' || ' - ' || 'right'evaluates to'left - right'Your example looks like it’s reformatting a string that probably is a date like
20120102into2012-01-02