Topic: SQL*Plus and PL/SQL >> Regular Expression Problem
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| Title: Regular Expression Problem |
| Lyad |
Posted: Feb 01, 2007 05:11:45 AM |
Total Post: 12
Joined: Jan, 2007
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Can anyone tell me How should I use regular expression to check a string containing only alphabet and number.
The thing I need is :
I allow 'aA3 d', 'Aa4 ', '5 A_bc', '5 A B- C' i.e. all possibble combination with apace,alphabet(both cases),and number and '-' or '_'.
except -,_,and space not as first character
But I don't allow !,%,*,(,.,/,},{,(,",+,=,<,>, at any position.
Could anybody help me regarding this.
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 Lyad |
| Posted: Feb 01, 2007 12:23:39 PM |  |
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Total Post: 12
Joined: Jan, 2007
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One thing I forgot to mention is I need to allow \' apostrophe also.
Thanks.
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| ankur |
| Posted: Feb 02, 2007 02:29:36 AM | |
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Total Post: 59
Joined: Nov, 2006
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use the escape character ............
Specify Escape in the query and the character as '\' or '_'
whatever u want to allow
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| ebrian |
| Posted: Feb 03, 2007 12:12:04 AM | |
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Total Post: 1
Joined: Feb, 2007
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This should work for you:
[code]SQL> select * from foo;
A1
--------------------
aA3 d
Aa4
5 A_bc
5 A B- C
-ABC
12'YZ
A!B
7 rows selected.
SQL> select * from foo
2 where regexp_like(a1, '^[[:alnum:]](\w|[''_ ])+', 'i');
A1
--------------------
aA3 d
Aa4
5 A_bc
5 A B- C
12'YZ[/code]
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| Lyad |
| Posted: Feb 05, 2007 04:33:51 AM | |
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Total Post: 12
Joined: Jan, 2007
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