sql server - SQL and Google Charts - Given a series of dates, scale date range -

-

i'm using google charts create graphs , it's working well. problem i'm having when have large date range. x axis displays series of dates. it's fine 1 , 2 weeks (only weekdays, either have 5 or 10 dates) when start month(s) range, dates overlap 1 , it's unreadable. ideally, on 2 weeks, i'd 10 significant dates. example, if series dates 6/1 - 7/15, i'd x axis on graph display like:

6/1 | 6/5 | 6/10 | 6/15 | 6/20 | 6/25 | 6/30 | 7/5 | 7/10 | 7/15

with google charts, have specify series of data, can't provide start , end date , have scale appropriately. fyi - i'm using sql server stored proc obtain data i'd able calculate dates on database side.

ok understand requirement , here piece of code form string separated ";" can return sql server sp!

begin     declare @dt1 smalldatetime     declare @dt2 smalldatetime     declare @intdays int     declare @curdt smalldatetime     declare @interv int     declare @outtext varchar(1000)      set @dt1 = '6/1/2011'     set @dt2 = '7/15/2011'     set @interv = 10      set @intdays = datediff(dd,@dt1,@dt2) / @interv     set @curdt = @dt1     set @outtext = ''     while (@curdt < @dt2)     begin         set @outtext = @outtext + convert(varchar(8), @curdt, 1) + ';'         set @curdt = dateadd(dd, @interv, @curdt)     end     if @curdt >= @dt2         set @outtext = @outtext + convert(varchar(8), @dt2, 1) + ';'      set @outtext = substring(@outtext, 1, len(@outtext)-1)      print @outtext end

@dt1 , @dt2 start , end dates, can replace local variables. @outtext string values.

let me know if have questions or want function/procedure!


Comments

Post a Comment

Popular posts from this blog

php - What is the difference between $_SERVER['PATH_INFO'] and $_SERVER['ORIG_PATH_INFO']? -

-
what’s difference between $_server['path_info'] , $_server['orig_path_info'] ? how use them? when run print_r($_server) , path_info , orig_path_info not present in array. why not? how can enable them? i have read php manual on them, still don’t understand them. the path_info variable present if invoke php script this: http://www.example.com/phpinfo.php/hello_there it's /hello_there part after .php script. if don't invoke url that, there won't $_server["path_info"] environment variable. the porig_ prefix uncommon. path_info standard cgi-environment variable, , should never prefixed. did read that? (there issues around php3/php4 if invoked php interpreter via cgi-bin/ - hardly has such setups today.) for reference: http://www.ietf.org/rfc/rfc3875
Read more

fortran - Function return type mismatch -

-
i'm attempting recode old c++ program in fortran make use of lapack (i'm aware c++ have lapack++, i'm having lot of trouble installing it, gave up). i didn't have problems compilation, when had variables declared real . when started coding section of program required lapack, found parameters passed dsyev need double precision . tried change double precision (including changing hard coded numbers double precision counterparts, i.e. 0.0 -> 0.0d0) when try compile, following error of functions , subroutines i've written: error: return type mismatch of function <function> @ (1) (real(4)/real(8)) i'm not sure coming from, in program has been changed double precision. for example, i've declared following: double precision :: alpha(3),d(3),zeta1,zeta2 double precision :: a1(3),a2(3),d1(3),d2(3) double precision :: pi pi = 3.14159265359d0 alpha = (/0.109818d0, 0.405771d0, 2.22766d0/) d = (/0.444635d0, 0.535328d0, 0.154329d0 /) 10 i=1,3 ...
Read more

queue - mq_receive: message too long -

-
i implementing communication between 2 processes using queue. problem when call function mq_receive, error: message long. i have done following: struct mq_attr attr; long size = attr.mq_msgsize; .... // initializing queue "/gateway" int rc = mq_receive(gateway, buffer, size, &prio); if print size value, size=1, while when print same size program (got same mechanism), not long integer ( -1217186280 )... how can solve error?....so while size = 1, believe it's right "message long" why 1? p.s. have tried put : int rc = mq_receive(gateway, buffer, sizeof(buffer), &prio); but no result. it seems need read docs more carefully. when call mq_receive should pass size of destination buffer. this size must greater mq_msgsize attribute of queue . in addition, seems have error in queue attributes initialisation makes proper mq_receive call impossible. here standard message queue session: fill mq_attr struct ( doc ): struct mq_a...
Read more