sql server - Is there a better way to optimize the sql query using Linq? -


i trying count details 2 tables.the count depends on table1.data field below query

select 'all'    type,  count(*) cnt    table1  inner join table2  on table1.id = table2.id   table1.id = 2683   union  select 'no type' type,  count(*) cnt    table1  inner join table2  on table1.id = table2.id   table1.id = 2683  , isnull(table1.data, '') = ''   union  select isnull(table1.data, '') type,  count(*)                    cnt    table1  inner join table2  on table1.id = table2.id   table1.id = 2683  , isnull(table1.data, '') <> ''  group  isnull(table1.data, '')

and output should be

type             cnt --------------  -----               4 no type           0 type1             3

i trying use case statements failed.any suggestions please. updated actual sql query is

select 'all'    floornotetype,         count(*) cnt    floor_notes         inner join floor_note_xref                 on floor_notes.floor_note_id = floor_note_xref.floor_note_id   floor_note_xref.inmate_id = 2683  union  select 'no type',         count(*) cnt    floor_notes         inner join floor_note_xref                 on floor_notes.floor_note_id = floor_note_xref.floor_note_id   floor_note_xref.inmate_id = 2683         , isnull(floor_note_type, '') = ''  union  select isnull(floor_note_type, '') floornotetype,         count(*)                    cnt    floor_notes         inner join floor_note_xref                 on floor_notes.floor_note_id = floor_note_xref.floor_note_id   floor_note_xref.inmate_id = 2683         , isnull(floor_note_type, '') <> ''  group  isnull(floor_note_type, '')

you can retrieve totals using single query with rollup clause:

select   case when              grouping(table1.data) = 1 'all'        else              isnull(table1.data, 'no type')   end type,   count(*) cnt      table1      inner join table2 on table1.id = table2.id   table1.id = 2683  group  table1.data rollup

with rollup generates hierarchical sub-totals each field in group by clause way grand total.

fields don't take part in sub-total have null value, means null keys , subtotals can mixed up. grouping(..) function checks see whether result row grand total specific field.

in case there single grouping field, grouping(table1.data) return 1 row corresponds grand total


Comments

Post a Comment

Popular posts from this blog

Command prompt result in label. Python 2.7 -

i want put result(output) of shell command label. command works, label shows "0", however, in command prompt, result shown correctly, need showed in label. doing ubuntu. myg1 = button(root, text="rodyti informacija", command=lambda: gauti()) myg1.pack(side=bottom) def gauti(): imti = tekstas.get("1.0", "end-1c") info = subprocess.call("id '{imti}' ".format(imti=imti), shell=true) w = label(root, text= info) w.pack(side = bottom) subprocess.call() returns exit code of process created (in case 0 success). if want text output of process, should instead call subprocess.check_output() .
Read more

javascript - How do I use URL parameters to change link href on page? -

i change href value of link using url parameters. example: default <a id="dlink" href="link-1">link</a> but, when user goes https://url.com/?dlink=link-2 it swaps out link new link <a id="dlink" href="link-2">link</a> first need value url. if you're not using javascript framework can create function using jquery. please check get url parameter jquery or how query string values in js it. after that, element "a" id , set value there. $("#dlink").attr("href", hreffromparam);
Read more

amazon web services - AWS Route53 Trying To Get Site To Resolve To www -

so have domain nameservers pointed aws route 53. site hosted on ec2 instance , reachable resolves site.com, if input www.site.com. i'm curious how site resolve www.site.com. have under route53 domains hosted zone 2 additional record sets outside of ns , soa: a site.com ec2 elastic ip cname www.site.com ec2 public dns i can reach site using both site.com , www.site.com, resolve site.com. there way make if enter either, resolves www.site.com? at first, both should record set. a site.com ec2 elastic ip www.site.com ec2 elastic ip and need redirect setting in web server (nginx, apache, ..) following. (source: how redirect www non-www nginx on centos 7 ) redirect non-www www if want redirect users plain, non-www domain www domain, add server block: server { server_name example.com; return 301 $scheme://www.example.com$request_uri; } save , exit. configures nginx redirect requests "example.com" "www.example.com". not
Read more