function ShowMetadataQuery(obj, md){
    var query = md;
    if(md == 'ShowTables')
    {
      query = 
        "select *\n"
      + "  from <database-name>.information_schema.tables\n";
    }
    if(md == 'ShowViews')
    {
      query = 
        "select *\n"
      + "  from <database-name>.information_schema.tables\n"
      + " where table_type='VIEW' \n";
    }
    if(md == 'ShowColumns')
    {
      query = 
        "select *\n"
      + "  from <database-name>.information_schema.columns\n";
    }
    if(md == 'CreateView')
    {
      query = 
        "create view <myview> as select * from <somedatabase>..<sometable>\n";
    }
    if(md == 'DropTable')
    {
      query = 
        "drop table <mytable>\n";
    }
    if(md == 'CreateIndex')
    {
      query = 
        "create index <index-name> on <mytable>(<column1>,<column2>,...)\n";
    }
    if(md == 'MyDBSize')
    {
      query = 
        "exec sp_spaceused\n";
    }
    if(md == 'MyDBTableSize')
    {
      query = 
        "exec sp_spaceused '<table-name>'\n";
    }
    obj.SQL.value=query;
    return true; 
}