sql server - Is there a way to dynamically produce SQL Columns in a select query? -


my current sql query takes last 6 months , selects sales, so

  sum(case when ci.invoicedate >= '20160501' , ci.invoicedate <= '20160531' cid.quantityordered else 0 end) 'may',   sum(case when ci.invoicedate >= '20160601' , ci.invoicedate <= '20160630' cid.quantityordered else 0 end) 'june',   sum(case when ci.invoicedate >= '20160701' , ci.invoicedate <= '20160731' cid.quantityordered else 0 end) 'july',   sum(case when ci.invoicedate >= '20160801' , ci.invoicedate <= '20160831' cid.quantityordered else 0 end) 'august',   sum(case when ci.invoicedate >= '20160901' , ci.invoicedate <= '20160930' cid.quantityordered else 0 end) 'september',   sum(case when ci.invoicedate >= '20161001' , ci.invoicedate <= '20161030' cid.quantityordered else 0 end) 'october',

however, when run report in december, because have hard coded in month names, won't november sales figures.

ideally form of code dynamically produces select query last 6 months in it.

is possible? there documentation can point me towards learn more dynamic sql?

thanks everyone!

get last 6 months names , build dynamic query using pivot:

declare @months nvarchar(max) = ''  ;with cte (select datename(month, dateadd(month, 0, getdate())) mn, 0 v union select datename(month, dateadd(month, v - 1, getdate())) mn, v - 1 cte v > -5 ) select @months = @months + '[' + mn + '], ' cte  set @months = substring(@months, 1, len(@months) - 1)  declare @q nvarchar(max)  set @q = ' select * ( select quantityordered qo , datename(month, invoicedate) mn invoicetable ) s pivot (sum(qo) mn in (' + @months + ') ) p'  exec(@q)

Comments

Post a Comment

Popular posts from this blog

sql server - Cannot query correctly (MSSQL - PHP - JSON) -

i have little problem on project. , turns out query result returns nothing when value of first name or last name has 'ñ' in it. here's code config.php: <?php ini_set('mssql.charset', 'utf-8'); header('content-type: text/html; charset=utf-8'); $servername = "192.168.1.21"; /* ip add of db server */ $connection = array("database" => "db", "uid" => "?", "pwd" => "***"); $conn = sqlsrv_connect($servername, $connection); if(!$conn){ echo "connection not established."; die(print_r(sqlsrv_errors(), true)); } ?> myquery: $idnumber = $_post["idnum"]; $response = array(); $query2 = "select clname, cfname, cmname, cqualifier student cidno = '$idnumber'"; try{ $stmt2 = sqlsrv_query($conn, $query2); } catch(pdoexeption $ex){ $response["success"] = 0; $response["message"] = "d...
Read more

php - trouble displaying mysqli database results in correct order -

i have table in database stores events , date expire. want display events on website display current events first expired events after? i have tried following sql $sql = "select noticeid, notice, noticedesc, noticeimg, noticedate, expirydate tbl_notices group noticeid ,expired order expirydate asc"; but returns expired results first due expirydate being ordered asc in query. my tbl_notice structure looks this noticeid => int(4) notice => varchar(100) noticedesc => text noticedate => timestamp noticeimg => varchar(40) expirydate => datetime expired => int(1) 0 current or 1 expired my php code is $sql = "select noticeid, notice, noticedesc, noticeimg, noticedate, expirydate tbl_notices group noticeid ,expired order expirydate asc"; $result = mysqli_query($conn,$sql); if ($result->num_rows > 0) { // output data of each row while($row = $result->fetch_assoc()) { ...
Read more

C++ Linked List -

i trying create linked list download txt file , use linked list handle file line line. when handling downloaded linked list operations performed on such text editor would. encountering problems however. seems "node(string value)" section of code has wrong though original node() declaration no arguments passes. unable figure out quite is. node.h class node { public: node(); node(string value); void setnext(node *nextnode); // allows user set "next" pointer of node points friend class linkedlist; private: string data; // data box node* next; // pointer box }; node.cpp # include <string> # include "node.h" using namespace std; node::node() { data = ""; next = null; } node::node(string value) { data = value; next = null; } void node::setnext(node *nextnode) // allows user set "next" pointer of node points { this->next = nextnode; } your #include <string> ...
Read more