Question

以下是我的代码的一部分。当我运行代码时，执行需要花费太多时间（超过8分钟）。经过几次测试，我发现每个while循环引起的延迟。我试图在循环中移动查询，但这没用。知道如何减少延迟吗？

sql="update rpttbl set cutsum= ? where temp=?";
            prepStmt=conCreate.prepareStatement(sql);
            rs=rptStmt.executeQuery("select temp from rpttbl");
            prepStmt2=createDBcon.prepareStatement("select sum(la2a) from "+Globals.comp+".sarchivelist where lempid= ? and "
                        + "(ldate='"+Globals.year+"-"+Globals.date+"-28') and (la5=22 or la5=33 or la5=2) ");
            while(rs.next()){
                prepStmt2.setString(1, rs.getString(1));
                prepStmt2.execute();
                rs2=prepStmt2.getResultSet();
                prepStmt.setString(2, rs.getString(1));
                if(!rs2.next()){
                }  
                else{
                    prepStmt.setString(1,rs2.getString(1));
                    prepStmt.addBatch();
                }
                prepStmt.executeBatch();
            }

            sql="update rpttbl set promir= ? where temp=?";
            prepStmt=conCreate.prepareStatement(sql);
            rs=rptStmt.executeQuery("select temp from rpttbl");
            prepStmt2=createDBcon.prepareStatement("select la2a from "+Globals.comp+".sarchivelist where lempid= ? and "
                        + "(ldate='"+Globals.year+"-"+Globals.date+"-28') and la6=6 ");
            while(rs.next()){
                prepStmt2.setString(1, rs.getString(1));
                prepStmt2.execute();
                rs2=prepStmt2.getResultSet();
                prepStmt.setString(2, rs.getString(1));
                if(!rs2.next()){
                }  
                else{
                    prepStmt.setString(1,rs2.getString(1));
                    prepStmt.addBatch();
                }
                prepStmt.executeBatch();
            }


            sql="update rpttbl set proch= ? where temp=?";
            prepStmt=conCreate.prepareStatement(sql);
            rs=rptStmt.executeQuery("select temp from rpttbl");
            prepStmt2=createDBcon.prepareStatement("select sum(la2a) from "+Globals.comp+".sarchivelist where lempid= ? and "
                        + "(ldate='"+Globals.year+"-"+Globals.date+"-28') and la6=10001 ");
            while(rs.next()){
                prepStmt2.setString(1, rs.getString(1));
                prepStmt2.execute();
                rs2=prepStmt2.getResultSet();
                prepStmt.setString(2, rs.getString(1));
                if(!rs2.next()){
                }  
                else{
                    prepStmt.setString(1,rs2.getString(1));
                    prepStmt.addBatch();
                }
                prepStmt.executeBatch();
            }

编辑：我移动了prepStmt.executeBatch（）;在while（）循环之外，但这并没有减少延迟。

Answer 1

执行prepStmt.executeBatch（）;在while（）循环之外

执行代码花费太多时间

1 个答案: