Fixed query building in reqQueryFields

src/libs/middlewares/reqQueryFields.js

@@ -176,7 +176,8 @@ class ReqQueryFields {
                             if(value.where.type === 'string') whereValue = '%'+whereValue+'%';
                             let tbl = value.where.table || value.table;
                             let whereField = (value.where.type === 'string')? 'LOWER('+tbl+'.'+value.where.field+')' : tbl+'.'+value.where.field;
-                            req.sql.where(whereField+' '+value.where.relation+' LOWER(?)', whereValue);
+                            let lower = (value.where.type === 'string') ? ' LOWER(?) ' : ' ? ';
+                            req.sql.where(whereField + ' ' + value.where.relation + lower, whereValue);
                         }
                     }
                 });