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<p class="MsoNormal"><span style="color:#1F497D">Yes. You can do similar to '%[^' + x'09' + x'0a' + x'0d' + '[:print:]]%';<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">That hex string supplied is so ugly it’s a thing of rare beauty.<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">Marty<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""> Paul White [mailto:paul.white@shift7solutions.com.au]
<br>
<b>Sent:</b> 30 August 2018 11:18<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>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">Hi Marty,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">Looks a bit like an SQL injection hack.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">Are tabs (x09) allowed also?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">try…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">similar to x'255b002d080b0c0e2d1f7f2dff5d25'
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">Paul<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" 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"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Yes it can!<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">insert into search_pattern values('%[^' + x'0a' + x'0d' + '[:print:]]%');<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">select id, a_string from test_search a, search_pattern b<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">where a.a_string similar to b.pattern;<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">And it works!<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">Bwahahaha<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">Marty<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""> 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>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Got it with a ceaseless five minutes of hacking!<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">select id, a_string from test_search<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">where a_string similar to '%[^' + x'0a' + x'0d' + '[:print:]]%';<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">I didn’t know you could build up search expressions like that!<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">I wonder if I could store the search expression in a column?<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">Marty<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""> 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"><o:p> </o:p></p>
<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My boss (bless his little cotton socks) has asked me to find strings which contain any non printing characters.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">So I came up with:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">select id, a_string from test_search<o:p></o:p></p>
<p class="MsoNormal">where a_string similar to '%[^[:print:]]%';<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">And that works well.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Okay then…<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This works:<o:p></o:p></p>
<p class="MsoNormal">select id, a_string from test_search<o:p></o:p></p>
<p class="MsoNormal">where replace(replace(a_string, x'0d', ''), x'0a', '') similar to '%[^[:print:]]%';<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Anyone got any ideas?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Martin Bowes<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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