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Group « Regular Expressions « Oracle PL / SQL
Oracle PL / SQL
Regular Expressions
Group
1.
Group the letters 'ir' together by putting them in parentheses
2.
Parenthesize both expressions
3.
REGEXP_SUBSTR('Yababa dababa do','(ab)')
4.
Using backreference: REGEXP_REPLACE('H1234 H4321 H2345','(.*) (.*) (.*)','\3, \2 \1')
5.
REGEXP_SUBSTR('Yababa dababa do','(ab)\1'), backreference option