oracle - SQL Nested Calculation JOIN -



oracle - SQL Nested Calculation JOIN -

there several dozen threads title none of ones found seemed help.

i have query composed of 2 tables: table client , table transactions

each client can have multiple entries in transactions table. want given time frame (assume dates tracked within transactions table) take each client in client table , find 3 different calculations transactions table customer. first number calculates # of quotes issued, sec calculates # of orders, , 3rd total number of quotes didn't turn order. calculations don't matter relates solution problem.

i sense there type of bring together i'm not utilizing derive proper values here have far (simplified).

select customer.customerid, count(transactionalias1.*), count(transactionalias2.*), count(transactionalias3.*) client left bring together (select * transactions [...]) transactionalias1 on transactionalias1.customerid = customer.customerid left bring together (select * transactions [...]) transactionalias2 on transactionalias2.customerid = customer.customerid left bring together (select * transactions [...]) transactionalias3 on transactionalias3.customerid = customer.customerid grouping customer.customerid

what's unusual me having first 2 inner joins produces right values first 2 counts. adding 3rd inner bring together invalidates other values. running select statement within each inner bring together lone produces right count.

any help appreciated. if of aware of stackoverflow article addresses same issue, please allow me know.

shouldn't unusual - there's certainly different filter in each of 3 subqueries, unless every client has @ to the lowest degree 1 transaction each subquery, inner bring together produce result don't expect.

you should remain left bring together receive right results customers. alternatively, can this:

select customer.customerid, sum(count1) count1, sum(count2) count2, sum(count3) count3 client left bring together ( select customerid, case when ... 1 else 0 end count1, case when ... 1 else 0 end count2, case when ... 1 else 0 end count3 transactions ) s txn on txn.customerid = customer.customerid grouping customer.customerid

oracle join

Comments

Post a Comment

Popular posts from this blog

Delphi change the assembly code of a running process -

Delphi change the assembly code of a running process - i'm trying alter address 00741fa5 has push test.009e721c . alter push test.009e71c8 . procedure callback; asm force $9e71c8 end; procedure tform2.btn1click(sender: tobject); var ppid :dword; pprocess : cardinal; begin getwindowthreadprocessid(findwindow(nil,pchar('test')), @ppid); pprocess := openprocess(process_all_access, false, ppid); injectasm(pprocess, $741fa5, 10, integer(@callback), 0); end; here injectasm function (with error checking) function injectasm(process: longword; injectaddress, injectsize, codeaddress, codesize : integer): pointer; var csize, rsize : integer; replaced : array of byte; jmp : array [0..4] of byte; jmpaddress : integer; nopv : byte; : integer; nbr: ulong_ptr; begin //injectsize must equal or greater 5, because need space our //(far) jmp wwxxyyzz instruction //if there's no space, inject in place of few instructions if injectsize ...
Read more

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) -

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) - hello have problem hibernate , jackson. have 2 pojos @entity @table(name = "users") public class user implements serializable { static final long serialversionuid = 4235637833262722256l; @id @generatedvalue private int id; @column(name = "creation_date") private date creationdate; @column(name = "first_name") private string firstname; @column(name = "last_name") private string lastname; @version @column(name = "version") private int version; @column(name = "e_mail") private string email; @column(name = "enabled") private boolean enabled; @column(name = "login") private string login; @column(name = "password") private string password; @jsonmanagedreference("role") @onetomany(mappedby = "user", cascade = cascadetype.all,fetch = fetchtyp...
Read more

C++ 11 "class" keyword -

C++ 11 "class" keyword - i've started using c++ 11 little bit more , have few questions on special uses of class keyword. know it's used declare class, there's 2 instances have seen don't understand: method<class t>(); and class class_name *var; why precede typename keyword class in first example, , keyword pointer in sec example? that known elaborated type specifier , necessary when class name "shadowed" or "hidden" , need explicit. class t { }; // love of god don't t t; t t2; if compiler smart, give these warnings: main.cpp:15:5: error: must utilize 'class' tag refer type 't' in scope t t2; ^ class main.cpp:14:7: note: class 't' hidden non-type declaration of 't' here t t; ^ if class not defined, deed forwards declaration. for example: template <typename t> void method() { using type = typename t::value_type; } method...
Read more