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regexp_instr - what's wrong?

JackKJan 11 2012 — edited Jan 11 2012
SQL> select regexp_instr('[X]D {X}D', '[\[\{\(]X[\]\}\)]') re_i from dual;

 RE_I
-----
    0
Why the output is 0? Shouldn't it be 1? 
SQL> select regexp_instr('[X]D {X}D', '[\[\{\(]X[\}\)]') re_i from dual;

 RE_I
-----
    6
This is good. Hmm...
This post has been answered by Frank Kulash on Jan 11 2012
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Locked on Feb 8 2012
Added on Jan 11 2012
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