Nuke ExpectResultSet. Opted not to disable the mysql driver exceptions in zeos, instead used Anse's TZConnection.GetAffectedRowsFromLastPost().

(Messing with the internals here, please test...)

source/childwin.pas

@@ -2808,27 +2808,19 @@ begin
       // ok, let's rock
       SQLstart := GetTickCount();
       try
-        if ( ExpectResultSet( SQL[i] ) ) then
+        ds := GetResults( SQL[i], false, false );
+        gridQuery.DataSource.DataSet := ds;
+        if ( ds <> nil ) then
         begin
-          ds := GetResults( SQL[i], false, false );
-          gridQuery.DataSource.DataSet := ds;
-          if ( ds <> nil ) then
-          begin
-            fieldcount := ds.Fieldcount;
-            recordcount := ds.Recordcount;
-          end
-          else
-          begin
-            fieldcount := 0;
-            recordcount := 0;
-          end;
+          fieldcount := ds.Fieldcount;
+          recordcount := ds.Recordcount;
           rowsaffected := rowsaffected + TZQuery(ds).RowsAffected;
         end
         else
         begin
-          rowsaffected := rowsaffected + ExecUpdateQuery( SQL[i], false, false );
           fieldcount := 0;
           recordcount := 0;
+          rowsaffected := FMysqlConn.Connection.GetAffectedRowsFromLastPost;
         end;
       except
         on E:Exception do
@@ -5050,7 +5042,7 @@ begin
     try
       // Start query execution
       MysqlQuery := RunThreadedQuery(sql);
-      Result := TZQuery(MysqlQuery.MysqlDataset).RowsAffected;
+      Result := FMysqlConn.Connection.GetAffectedRowsFromLastPost;
       // Inspect query result code and log / notify user on failure
       if MysqlQuery.Result in [MQR_CONNECT_FAIL,MQR_QUERY_FAIL] then
       begin

source/helpers.pas

@@ -74,7 +74,6 @@ type
   function maskSql(sql_version: integer; str: String) : String;
   procedure ActivateWindow(Window : HWnd);
   procedure ShellExec( cmd: String; path: String = '' );
-  function ExpectResultSet(ASql: String): Boolean;
   function getFirstWord( text: String ): String;
   function ConvertWindowsCodepageToMysqlCharacterSet(codepage: Cardinal): string;
   function GetFieldValue( Field: TField ): String;
@@ -1885,55 +1884,6 @@ end;
 
 
 
-{***
-  Checks if the SQL will bring up any resultset.
-  Important to know for deciding on whether to do a
-  ZQuery.Open or ZQuery.ExecSQL
-
-  @param string (part of) SQL-query
-  @return boolean
-  @see TMDIChild:ExecSQLClick
-  @see TMysqlQueryThread:Execute
-}
-function ExpectResultSet(ASql: String): Boolean;
-const
-  RESULTSET_KEYWORDS : array[0..11] of string[10] =
-  (
-   'ANALYZE',
-   'CALL',
-   'CHECK',
-   'DESC',
-   'DESCRIBE',
-   'EXECUTE',
-   'EXPLAIN',
-   'HELP',
-   'OPTIMIZE',
-   'REPAIR',
-   'SELECT',
-   'SHOW'
-  );
-  NOTRESULTSET_SENTENCE : string[12] = 'INTO OUTFILE';
-var
-  kw : String;
-  i : Integer;
-begin
-  Result := False;
-
-  // Find keyword and check existance in const-array of resultset-keywords
-  kw := UpperCase( getFirstWord( ASql ) );
-  for i := Low(RESULTSET_KEYWORDS) to High(RESULTSET_KEYWORDS) do
-  begin
-    if kw = RESULTSET_KEYWORDS[i] then
-    begin
-      Result := True;
-      break;
-    end;
-  end;
-  if Pos(NOTRESULTSET_SENTENCE, UpperCase(ASql)) > 0 then Result := False;
-end;
-
-
-
 {***
   Returns first word of a given text
   @param string Given text

source/mysqlquerythread.pas

@@ -4,6 +4,7 @@ interface
 
 uses
   Windows, Messages, Forms, Db, Classes, ZConnection, ZDataSet, StdCtrls, SysUtils,
+  ZMessages,
   HeidiComp;
 
 {$IFDEF EXAMPLE_APP}
@@ -232,14 +233,12 @@ begin
       end;
     end else begin
       try
-        if ExpectResultSet(FSql) then begin
-          r := RunDataQuery (FSql,TDataSet(q),ex,FCallback);
-          if r then begin
-            if q.State=dsBrowse then begin
-              // WTF?
-            end;
-          end;
-        end else r := RunUpdateQuery (FSql,TDataSet(q),ex,FCallBack);
+        r := RunDataQuery (FSql,TDataSet(q),ex,FCallback);
+        if r then begin
+          //if q.State=dsBrowse then begin
+            // WTF?
+          //end;
+        end;
         TMysqlQuery(FOwner).SetMysqlDataset(q);
 
         if r then SetState (MQR_SUCCESS,'SUCCESS')
@@ -336,11 +335,12 @@ begin
     q.Active := True;
     Result := True;
   except
-    on E: Exception do
-      begin
-        AExceptionData := GetExceptionData(E);
-      end;
-    // EZSQLException
+    on E: Exception do begin
+      if E.Message = SCanNotOpenResultSet then begin
+        Result := true;
+        ADataset := nil;
+      end else AExceptionData := GetExceptionData(E);
+    end;
   end;
 end;