pragma solidity ^0.4.0;
contract ABC{
        uint i;
        uint rowCount = 0;
        User userObj;

 function ABC() {}
        struct User{
            uint rowCount;
            string id;
            string ABCData;
            string DEFData;
            ......
            ......
            ......
            around 20 variables.
    }

     mapping(uint => User) ABClist;
    function setABCData(string uid,string ABCData,string DEFData,........) {

        rowCount = rowCount + 1;
        ABClist[rowCount].rowCount = rowCount;
        ABClist[rowCount].id = uid;
        ABClist[rowCount].ABCData = ABCData;
        ABClist[rowCount].DEFData = DEFData;
        ...........
        ...........
        ...........
        ...........

    }



        function getABCData(string uid) constant returns ( string _id, string _ABCData, string _DEFData, ........)
    {
        uint rowNumber;
        for(i = 0; i <=rowCount; i++){
            if(stringsEqual(ABClist[i].id, uid) || stringsEqual(ABClist[i].ABCData, uid) || stringsEqual(ABClist[i].DEFData, uid)){
                userObj.id = ABClist[i].id;
                userObj.ABCData = ABClist[i].ABCData;
                userObj.DEFData = ABClist[i].DEFData;
                rowNumber = i;
            }
        }
        return (userObj.id, userObj.ABCData, userObj.DEFData, rowNumber);
    }

    }