New column page

Shows SQL for columns ALTER TABLE ... [ADD|DROP] COLUMN combines a selection
of multiple columns into a single alter table.
Show collation in list of columns.

(order of columns isn't what is should be but that should maybe be fixed
by a generic column selection and ordering mechanism that knows what the
default sort should be)

pglablib/PgCollationContainer.cpp

@@ -0,0 +1,28 @@
+#include "PgCollationContainer.h"
+#include "Pgsql_Connection.h"
+#include "Pgsql_Col.h"
+#include "PgDatabaseCatalog.h"
+#include <iterator>
+
+std::string PgCollationContainer::getLoadQuery() const
+{
+	return "SELECT oid, collname, collnamespace, collowner, collencoding, \n"
+		   "   collcollate, collctype \n"
+		   "FROM pg_collation";
+}
+
+PgCollation PgCollationContainer::loadElem(const Pgsql::Row &row)
+{
+	Pgsql::Col col(row);
+	Oid	class_oid = col.nextValue();
+	QString name  = col.nextValue();
+	Oid ns_oid = col.nextValue();
+
+	PgCollation v(m_catalog, class_oid, name, ns_oid);
+	Oid owner ;
+
+	col >> owner >> v.collencoding >> v.collcollate >> v.collctype;
+	v.setOwnerOid(m_catalog, owner);
+
+	return v;
+}