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</o:shapelayout></xml><![endif]--></head><body lang=DE link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'>Hello,<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'>I am looking for a way to create a virtual layer in 3.24 in a 'special' way. I have a line layer with attributes like:<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span style='font-family:"Verdana",sans-serif'>xxxx_123_xxxxxxxxx<o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span style='font-family:"Verdana",sans-serif'>oooo_abc_000_123_0<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'>and a polygon layer with attributes like:<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span style='font-family:"Verdana",sans-serif'>abc<o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span style='font-family:"Verdana",sans-serif'>123<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'>Now, I would like to use only lines that contain one of the strings that are present in the polygon layer.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'>A prototype for the SQL query might be:<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span style='font-family:"Verdana",sans-serif'>select * from my_lines where my_line_attribute in (select my_poly_attribute from my_polys)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'>The problem is that I cannot use the IN clause because the line attributes contain additional surrounding characters around the polygon attributes. The surrounding characters can be any token, so it is not possible to remove them in a systematic way prior to the query. I thought about working with '%123%'. But how do I put every possible value in my_poly_attribute in that clause? That is, '%123%' would have to be in the query as well as '%abc%'<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'>Thanks a lot for ideas!<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana",sans-serif;mso-fareast-language:DE'>Regards, Uwe<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>