With xml like:
<a>
<b>
<c>1</c>
<c>2</c>
</c>3</c>
</b>
I'm trying to create an xpath expression (for a postgresql query) that will return if is a particular value and not that is all three values. What I currently have (which does not work) is:
select * from someTable where xpath ('//uim:a/text()', job, ARRAY[ ARRAY['uim','http://www.cmpy.com/uim'] ])::text[] IN (ARRAY['1','3']);
If I try with ARRAY['1'] this will not return any values but with ARRAY['1','2','3'] it will return all three.
How can I select based on a single element in a sequence?
Thanks.
If you're asking how to get the value of a 1 or more XML elements within your XML segment the easiest way is likely to simply utilize a custom SQL CLR library and XPath analysis from within it to assemble and return whatever information you desire. At least that would be my approach.
Related
I am wondering if below is achievable using xpath
Given:
<label for="pt1:sc">Select Country</label>
<select id="pt1:sc">....</select>
Requirement:
I want to find select element using single xpath expression like below,
bcs ids are dynamic and always available in attribute 'for'.
//label[text()='Select Country']/#for//*[#id=#for]
Can we pass attribute value(here for attribute of label) in xpath, further down the path to find element.
Please do not suggest alternative using siblings, child, id or selenium get-attribute etc.
Thanks,
You can use something like this to select an element with an attribute value which refers to another attribute located in another element :
//*[#id=//label[text()='Select Country']/#for]
I'm not sure how it's going to work with your actual html, but it works on the example in the question:
//label[text()='Select Country'][#for=//select/#id]
I am trying to use a view to extract a string(value) from a large XML string that sits in a single column in a hive table. I need to get the associated FOO_STRING_VALUE for COMPANY_ID, SALE_IND, and CLOSING_IND.
<Message>
<Header>
<FOO_STRING>
<FOO_STRING_NAME>COMPANY_ID</FOO_STRING_NAME>
<FOO_STRING_VALUE>44-1235</FOO_STRING_VALUE>
</FOO_STRING>
<FOO_STRING>
<FOO_STRING_NAME>SALE_IND</FOO_STRING_NAME>
<FOO_STRING_VALUE>Y</FOO_STRING_VALUE>
</FOO_STRING>
<FOO_STRING>
<FOO_STRING_NAME>CLOSING_IND</FOO_STRING_NAME>
<FOO_STRING_VALUE>Y</FOO_STRING_VALUE>
</FOO_STRING>
</Header>
</Message>
The XML file can have up to 50 "FOO_STRINGS" and there is no guarantee in what order they will be in so I can not use XPATH unless I have 50 xpath_string calls for each Name/Value pair and matched them up later. I am using xpath like this .....
xpath_string(xml_txt, '/Message/Header/FOO_STRING[1]/FOO_STRING_VALUE') AS String_Val_1
xpath_string(xml_txt, '/Message/Header/FOO_STRING[2]/FOO_STRING_VALUE') AS String_Val_2
xpath_string(xml_txt, '/Message/Header/FOO_STRING[3]/FOO_STRING_VALUE') AS String_Val_3
However, if the order changes than it doesn't work. I'm wondering if there is a quick way to get to find the FOO_STRING_NAME needed the and get the corresponding Value using regexp_extract() or some other way? I am not familiar with Regex so any help or suggestions would be helpful, Thank you a ton
" if the order changes than it doesn't work "
Don't use position, then.
xpath_string(xml_txt, '/Message/Header/FOO_STRING[FOO_STRING_NAME="COMPANY_ID"]/FOO_STRING_VALUE') AS String_Val_1
xpath_string(xml_txt, '/Message/Header/FOO_STRING[FOO_STRING_NAME="SALE_IND"]/FOO_STRING_VALUE') AS String_Val_2
xpath_string(xml_txt, '/Message/Header/FOO_STRING[FOO_STRING_NAME="CLOSING_IND"]/FOO_STRING_VALUE') AS String_Val_3
I have something like the following XML in a column of a table:
<?xml version="1.0" encoding="utf-8"?>
<container>
<param name="paramA" value="valueA" />
<param name="paramB" value="valueB" />
...
</container>
I am trying to get the valueB part out of the XML via TSQL
So far I am getting the right node, but now I can not figure out how to get the attribute.
select xmlCol.query('/container/param[#name="paramB"]') from LogTable
I figure I could just add /#value to the end, but then SQL tells me attributes have to be part of a node. I can find a lot of examples for selecting the child nodes attributes, but nothing on the sibling atributes (if that is the right term).
Any help would be appreciated.
Try using the .value function instead of .query:
SELECT
xmlCol.value('(/container/param[#name="paramB"]/#value)[1]', 'varchar(50)')
FROM
LogTable
The XPath expression could potentially return a list of nodes, therefore you need to add a [1] to that potential list to tell SQL Server to use the first of those entries (and yes - that list is 1-based - not 0-based). As second parameter, you need to specify what type the value should be converted to - just guessing here.
Marc
Depending on the the actual structure of your xml, it may be useful to put a view over it to make it easier to consume using 'regular' sql eg
CREATE VIEW vwLogTable
AS
SELECT
c.p.value('#name', 'varchar(10)') name,
c.p.value('#value', 'varchar(10)') value
FROM
LogTable
CROSS APPLY x.nodes('/container/param') c(p)
GO
-- now you can get all values for paramB as...
SELECT value FROM vwLogTable WHERE name = 'paramB'
This may have a simple answer but I could not find an answer by searching. I am using Selenium with Java.
I have several elements (WebElement ele). I locate them by means other than their direct tag names so I cannot simply use the xpath to answer the question I have.
I have several possible element types:
<div>
<input>
<input type = "checkbox">
<select>
<select multiple>
I can determine most of them. If I do ele.getTagName(). If it is a div I will know right away. If it is input I can do a ele.getAttribute("type") and see whether it is checkbox or not. But for select the tagname will give me select both for the regular select and the select multiple. There is no attribute name for the multiple, so how can I distinguish between select and select multiple ?
You could do something like this:
//if its a select element
Select se = new Select(ele);
Then you could simple check if this is a multi select element by running:
se.isMultiple()
You can use XPath expression to choose select with multiple attribute:
//select[#multiple]
or select without multiple attribute:
//select[not(#multiple)]
Also note that even without explicit value of multiple attribute, actual value is "true", so if multiple attribute present in select, ele.getAttribute("multiple") should return "true"
In my SQL 2008 database table, I have one column name AUTHOR that contains XML data. The XML is not well formed and has data like below
<Author>
<ID>172-32-1176</ID>
<LastName>White</LastName>
<FirstName>Johnson</FirstName>
<Address>
<Street>10932 Bigge Rd.</Street>
<City>Menlo Park</City>
<State>CA</State>
</Address>
</Author>
Some XML have all of above data and some have just one tag.
<ID>172-32-1176</ID>
I want to write query that returns me a column as identiry.
I tried using AUTHOR.query('data(/Author/ID)') as identity but it fails when XML does not have Author node.
Thanks,
Vijay
Have you tried something like /Author/ID|/ID ? i.e. try for the first scenario, and with no match, the second ?
(note that the | operator is a set union operator, as described here)
In case that nothing "certain" can be maintained about the XML, except that a unique ID element contains the required identity value, then the following XPath expression selects the ID element:
//ID