public static String likePurviewCode(String alias,String puriveCode,String columnName){
		if(puriveCode == null){
			return "";
		}
		if(isBlank(alias)){
			alias = "";
		}else{
			alias += ".";
		}	
		
		StringBuilder sb = new StringBuilder();			
		sb.append(" ( ");
		sb.append(alias).append(columnName).append(" like '").append(puriveCode).append("%'");
		sb.append(" ) ");
		
		return sb.toString();
	}