Update PO_SelectOSPurchOrder.php

MySQL 8 removes ASC/DESC qualifiers from GROUP BY clauses, replace with ORDER BY clause for the sort.

Error reported in the forums:
http://www.weberp.org/forum/showthread.php?tid=9277

PO_SelectOSPurchOrder.php

@@ -389,14 +389,15 @@
 				ON suppliers.currcode=currencies.currabrev
 				WHERE purchorderdetails.completed=0
 				AND purchorders.orderno='" . $OrderNumber . "'
-				GROUP BY purchorders.orderno ASC,
+				GROUP BY purchorders.orderno,
 					suppliers.suppname,
 					purchorders.orddate,
 					purchorders.status,
 					purchorders.initiator,
 					purchorders.requisitionno,
 					purchorders.allowprint,
-					suppliers.currcode";
+					suppliers.currcode
+                ORDER BY purchorders.orderno ASC";
 	} else {
 		//$OrderNumber is not set
 		if (isset($SelectedSupplier)) {
@@ -443,7 +444,7 @@
 						AND purchorders.supplierno='" . $SelectedSupplier . "'
 						" . $WhereStockLocation
 						 . $StatusCriteria . "
-						GROUP BY purchorders.orderno ASC,
+						GROUP BY purchorders.orderno,
 							purchorders.realorderno,
 							suppliers.suppname,
 							purchorders.orddate,
@@ -452,7 +453,8 @@
 							purchorders.requisitionno,
 							purchorders.allowprint,
 							suppliers.currcode,
-							currencies.decimalplaces";
+							currencies.decimalplaces
+                        ORDER BY purchorders.orderno ASC";
 			} else {
 				$SQL = "SELECT purchorders.realorderno,
 							purchorders.orderno,
@@ -480,7 +482,7 @@
 						AND purchorders.supplierno='" . $SelectedSupplier . "'
 						" . $WhereStockLocation
 						 . $StatusCriteria . "
-						GROUP BY purchorders.orderno ASC,
+						GROUP BY purchorders.orderno,
 							purchorders.realorderno,
 							suppliers.suppname,
 							purchorders.orddate,
@@ -489,7 +491,8 @@
 							purchorders.requisitionno,
 							purchorders.allowprint,
 							suppliers.currcode,
-							currencies.decimalplaces";
+							currencies.decimalplaces
+                        ORDER BY purchorders.orderno ASC";
 			}
 		} //isset($SelectedSupplier)
 		else { //no supplier selected
@@ -535,7 +538,7 @@
 						AND purchorderdetails.itemcode='" . $SelectedStockItem . "'
 						" . $WhereStockLocation .
 						 $StatusCriteria . "
-						GROUP BY purchorders.orderno ASC,
+						GROUP BY purchorders.orderno,
 							purchorders.realorderno,
 							suppliers.suppname,
 							purchorders.orddate,
@@ -544,7 +547,8 @@
 							purchorders.requisitionno,
 							purchorders.allowprint,
 							suppliers.currcode,
-							currencies.decimalplaces";
+							currencies.decimalplaces
+                        ORDER BY purchorders.orderno ASC";
 			} else {
 				$SQL = "SELECT purchorders.realorderno,
 							purchorders.orderno,
@@ -571,7 +575,7 @@
 						AND orddate<='" . $DateTo . "'
 						" . $WhereStockLocation .
 						  $StatusCriteria . "
-						GROUP BY purchorders.orderno ASC,
+						GROUP BY purchorders.orderno,
 							purchorders.realorderno,
 							suppliers.suppname,
 							purchorders.orddate,
@@ -580,7 +584,8 @@
 							purchorders.requisitionno,
 							purchorders.allowprint,
 							suppliers.currcode,
-							currencies.decimalplaces";
+							currencies.decimalplaces
+                        ORDER BY purchorders.orderno ASC";
 			}
 		} //end selected supplier
 	} //end not order number selected