sql - PIVOT XML - dynamic extracting field out to columns -

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i have posted original question on thread:

pivot oracle - transform multiple row data single row multiple columns, no aggregate data enter link description here

the results wanted achieved using statement:

select * ( select "date", subcat,category,item,tag,value test2 tag in ('ln','sn') ) pivot  (   max(value)   tag in ('ln','sn') ) order category,subcat,item,"date"

however, expand solution more flexible , accept dynamic selection in in clause. oracle not , threw out error. instructed use pivot xml. after research, came statement:

select * ( select "date", subcat,category,item,tag,value test2  tag in     (     select 'ln' dual       union      select 'sn' dual     ) ) pivot xml (   max(value)   tag in (any) ) order category,subcat,item,"date"

but have extract out fields wanted not familiar how proceed. please help.

the final result want still same:

enter image description here

with pivot xml, got whole bunch of ugly xml tags!

the data associated question is:

  create table "test2"     (    "date" date,      "subcat" varchar2(6 byte),      "category" varchar2(7 byte),      "value" varchar2(17 byte),      "item" varchar2(2 byte),      "description" varchar2(15 byte),      "tag" varchar2(3 byte)    )     insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576',null,'25','other attribute','oa'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576',null,'25','some comments','sc'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576','1105618','25','lot number','ln'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576','12','25','not relevant','nr'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576','45','25','not use','nu'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576','-1','25','do not care','dc'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576','3x12mm','25','serial number','sn'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576',null,'25','abc','abc'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576',null,'25','whatever','def'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576',null,'28','some attribute','sa'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576',null,'28','other attribute','oa'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576','isq: 75, 80','28','other comments','oc'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576',null,'28','some comments','sc'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576','1303757','28','lot number','ln'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576','12','28','not relevant','nr'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576','40','28','not use','nu'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576','0','28','do not care','dc'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576',null,'28','abc','abc'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('24-oct-13','dd-mon-rr'),'290223','1219576',null,'28','whatever','def'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('18-jun-15','dd-mon-rr'),'354506','1219576',null,'4','some attribute','sa'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('18-jun-15','dd-mon-rr'),'354506','1219576',null,'4','other attribute','oa'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('18-jun-15','dd-mon-rr'),'354506','1219576','1403114','4','lot number','ln'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('18-jun-15','dd-mon-rr'),'354506','1219576','11','4','not relevant','nr'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('18-jun-15','dd-mon-rr'),'354506','1219576','50','4','not use','nu'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('18-jun-15','dd-mon-rr'),'354506','1219576','0','4','do not care','dc'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('18-jun-15','dd-mon-rr'),'354506','1219576',null,'4','whatever','def'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('18-jun-15','dd-mon-rr'),'354506','1219576','7777777777','9','lot number','ln'); insert test2 ("date",subcat,category,value,item,description,tag) values (to_date('18-jun-15','dd-mon-rr'),'354506','1219576','9.999999999999e12','9','serial number','sn');

... accept dynamic selection in in clause ...

not possible without xml-pivoting.

depending on need result set next, options are

  1. use xslt transform pivoted xml whatever need.
  2. instead of xml-pivot, construct query's pivot in clause @ runtime (and make cursor, insert/select, ctas, ... whatever need.)

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