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<p class=MsoNormal><span style='color:#1F497D'>Hi Marty,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Looks a bit like an SQL injection
hack. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Are tabs (x09) allowed also?<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>try…<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>similar to
x'255b002d080b0c0e2d1f7f2dff5d25' <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Paul<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> info-ingres-bounces@lists.planetingres.org
[mailto:info-ingres-bounces@lists.planetingres.org] <b>On Behalf Of </b>Martin
Bowes<br>
<b>Sent:</b> Thursday, 30 August 2018 6:45 PM<br>
<b>To:</b> info-ingres@lists.planetingres.org<br>
<b>Subject:</b> Re: [Info-ingres] Similar to what exactly<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>Yes it can!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>insert into
search_pattern values('%[^' + x'0a' + x'0d' + '[:print:]]%');<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>select id, a_string
from test_search a, search_pattern b<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>where a.a_string
similar to b.pattern;<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>And it works!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>Bwahahaha<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>Marty<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> Martin Bowes <br>
<b>Sent:</b> 30 August 2018 09:26<br>
<b>To:</b> Martin Bowes; info-ingres@lists.planetingres.org<br>
<b>Subject:</b> RE: [Info-ingres] Similar to what exactly<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>Got it with a
ceaseless five minutes of hacking!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>select id, a_string
from test_search<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>where a_string
similar to '%[^' + x'0a' + x'0d' + '[:print:]]%';<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>I didn’t know
you could build up search expressions like that!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>I wonder if I could
store the search expression in a column?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>Marty<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> Martin Bowes
[mailto:martin.bowes@ndph.ox.ac.uk] <br>
<b>Sent:</b> 30 August 2018 09:07<br>
<b>To:</b> info-ingres@lists.planetingres.org<br>
<b>Subject:</b> [Info-ingres] Similar to what exactly<o:p></o:p></span></p>
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<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Hi All,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>My boss (bless his little cotton socks) has
asked me to find strings which contain any non printing characters.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Sadly the ‘contain’ predicate
doesn’t allow any fancy pattern matching so we have to do this using the
‘similar to’ predicate.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>So I came up with:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>select id, a_string from test_search<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>where a_string similar to '%[^[:print:]]%';<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>And that works well.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>But now he says, in some columns he’d
like to allow it to have the characters \n (x’0a’) and \r
(x’od’).<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Okay then…<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>This works:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>select id, a_string from test_search<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>where replace(replace(a_string, x'0d', ''),
x'0a', '') similar to '%[^[:print:]]%';<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>But that means on each row I have to call
the replace function twice and then apply the similar to pattern. That
doesn’t sound terribly efficient to me.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>What I’d like to do is extend my
character set to be
‘%[^x’0a’x’od’[:print:]]%’ … but
pretty clearly that syntax isn’t going to fly.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Anyone got any ideas?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Martin Bowes<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
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