ORA-19228: XPST0008 -- undeclared identifier when using more then one var.
HI Gentlemen,
Given an XMLTYPE table with only one row. Under the root element there is a <header> and a <body> where the stuff inside the body has a different namespace. When I try to drill down with the statement in p.sql below, I always get
SQL> @c:\xsl\p
FROM z
FEHLER in Zeile 10:
ORA-19228: XPST0008 - nicht deklarierter Identifier: Präfix 'j' lokaler Name '' (undeclared identifier)
I also tried to insert a WHERE clause, it always complains with $j. When I am using only one variable, $i, it is OK. XML DB Developer's Guide has examples that are very close to this--they execute A1. CAn you help me where am I wrong?
Thank you very much, kind regards
Miklos HERBOLY
SELECT
XMLQuery('xquery version "1.0"; (: :)
declare namespace n1="urn:ehd/001"; (: :)
declare namespace n2="urn:ehd/go/001"; (: :)
for $i in /n1:ehd/n1:header
let $j := /n1:ehd/n1:body/n2:gnr_liste/n2:gnr
return $i,$j'
PASSING xml_document
RETURNING CONTENT) as ziffer
FROM z
/
Hi Miklos,
You'll need parentheses to indicate that you're returning the sequence of $i and $j :
xquery version "1.0"; (: :)
declare namespace n1="urn:ehd/001"; (: :)
declare namespace n2="urn:ehd/go/001"; (: :)
for $i in /n1:ehd/n1:header
let $j := /n1:ehd/n1:body/n2:gnr_liste/n2:gnr
return ($i, $j)or shorter version (if there's only one header per document) :
xquery version "1.0"; (: :)
declare namespace n1="urn:ehd/001"; (: :)
declare namespace n2="urn:ehd/go/001"; (: :)
/n1:ehd/n1:header
, /n1:ehd/n1:body/n2:gnr_liste/n2:gnr
)
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2. the G_1 node has G_3 and G_4 siblings
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A.) Download the attached archive and place it on your desktop. Do not decompress. (Ok got it)
B.) Download and install the Forum flash tool. (MSI HQ Forum USB flasher?)
C.) Insert your FAT32 formatted usb stick. (Ok got it)
D.) Make sure that all win 8 options are disabled. (Fast Boot etc) Also make sure the legacy USB is enabled. (win 8 options??? i'm running on a win7 ultimate 64bit)
E.) Start the forum flash tool and select option 1. Then point the tool at the compressed archive we downloaded earlier. Then to your USB Flash Drive. (Ok got it.)
F.) Boot to the USB and follow the directions. MEMTEST is included with the forum flash tool and it is recommended to run this prior to any flash. (ok got it, change boot sequence to USB and follow the directions.)
Yeah i know a lot of doubts, sorry for that, Working all day and at night i have to go to the university.
Thank you for your time!!! -
How to show all data when using more than one parameter?
Hi All,
I used a query like this to show the data in a report:
select col1, col2 // col1 and col2 are columns of tabale tab1
from tab1
where
tab1.col1 =
(case when :P_COL1 IS NOT NULL then // :P_COL1 IS A USER PARAMETER TO EQUAL COL1
:P_COL1 ELSE tab1.col1
end)
AND TAB1.COL3 =
(case when :P_COL3 IS NOT NULL then // :P_COL3 IS A USER PARAMETER TO EQUAL COL3
:P_COL3 ELSE tab1.col3
end)
The problem is when I run the report with paramters values or not, It shows the data which is not null for both col1 and col3.
That is when the value of col1 or col3 is null the report would not return that record!
I want the report to show all data not only values which is not null!
How to do this?Rainer,
That where clause will fail when col1 in the table is null and the parameter has the dummy value. Consider the following:
variable p_col1 varchar2
exec :p_col1 := 'yourdummyvalue';
select
from
select 'yourdummyvalue' col1 from dual
union all
select 'other' from dual
union all
select null from dual
union all
select 'X' from dual
) tab1
where nvl(tab1.col1,'yourdummyvalue') = nvl(nvl(:p_col1,tab1.col1),'yourdummyvalue')In this case, the query returns the row with null and the row with 'yourdummyvalue', where only the row with 'yourdummyvalue' should be returned.
You must do something like this:
where ( :p_col1 is null or ( :p_col1 = tab1.col1 ) )That one is the simplest and does not need a dummy value. Here are some other more complicated examples:
where nvl( :p_col1, 'yourdummyvalue' ) = decode( :p_col1, null, 'yourdummyvalue', tab1.col1 )or this:
where nvl( :p_col1, 'yourdummyvalue' ) = nvl2( :p_col1, tab1.col1, 'yourdummyvalue' )In the last 2 cases, it will not matter if the dummy value exists in the data, but they are unnecessarily complex.
Kurz
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