soc-signature-duple/00-duple-signature.sql

diff --git a/soc-signature-duple/00-duple-signature.sql b/soc-signature-duple/00-duple-signature.sql
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+++ b/soc-signature-duple/00-duple-signature.sql
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+create temporary table callnumbers ( callnumber varchar(255) primary key, count int not null ) ;
+insert into callnumbers select itemcallnumber,count(itemcallnumber) from items where itemcallnumber like 'BD%' group by itemcallnumber ;
+
+-- Duple signature
+SELECT count(biblio.biblionumber) as primjeraka,
+       callnumbers.count as signatura,
+       items.itemcallnumber,
+        biblio.author,biblio.title,biblioitems.publicationyear,biblioitems.volume,biblioitems.number,biblio.biblionumber
+FROM items
+LEFT JOIN biblioitems on (items.biblioitemnumber=biblioitems.biblioitemnumber)
+LEFT JOIN biblio on (biblioitems.biblionumber=biblio.biblionumber)
+LEFT JOIN callnumbers on itemcallnumber = callnumbers.callnumber
+WHERE items.itemcallnumber IS NOT NULL and items.itemcallnumber like 'BD%'
+GROUP BY biblio.biblionumber
+having primjeraka < signatura
+order by items.itemcallnumber ;