I've done some online reading but can't seem to find an answer to what I'm looking for. It may be because I'm approaching this the wrong way.
I am using Oracle 10g.
I have table xyz with columns:
recID- VARCHAR type
XML- CLOB type
The XML column contains xml and html tags. ie.
<Employee><firstName>John</firstName>
<EmpDesc><![CDATA[<p>I like to live by Ghandi's motto: Be the <strong>change</strong> you want to see</p>]]</EmpDesc>
</Employee>
An index was created:
create index myIndex on xyz(xml) indextype is ctxsys.context
When I perform the query below, I don't get the result I'm expecting, because one of the words is enclosed in html tags.
SELECT * from xyz where contains(xml, 'be the change you want to see')>0;
*Note that the string can exist in any node so inpath may not be a suitable option.
Is there a way to create an index to ignore html tags so that a result is returned?
Related
I have an Excel sheet that has two seperate columns of data that I need combined for my table in Qlik. I know it would be easy to combine the two in the Excel document, but because this is a data feed I would prefer not to do any extra work. One column has the first name and the other the last. Thank you.
I tried to concat but that did not work.
It sounds like what you're trying to achieve is string concatenation, where you'd combine two or more strings together. It'd be the same concept for fields, as long as their values can be coerced to a string type. In Qlik, this is done very simply by using the ampersand & operator. You can use this in three places:
Data Manager
If done in the Data Manager, you are creating a new calculated field. This can be done by editing the table that you're loading in from Excel, selecting Add field >> Calculated field, and then using an expression like this:
first_name & ' ' & last_name
What that expression is doing is taking the field first_name and concatenating it's values with a space ' ' and then concatenating the values of the last_name field.
So your new field, which I'm naming full_name here, would look like this:
first_name
last_name
full_name
Chris
Schaeuble
Chris Schaeuble
Stefan
Stoichev
Stefan Stoichev
Austin
Spivey
Austin Spivey
Here's what the data manager would look like:
Then after you load the data, you will have a new field with the combined names:
Data Load Editor
Doing this in the Data Load Editor will also result in a new field and is the exact same expression (see line 6):
Chart expression
The other option you have is to use this expression "on-the-fly" in a chart without creating a new column in the app data model like the first two options. Just use that same expression from above in a chart field expression and you'll get the same result:
I am trying to create a custom template fragment that builds a table of value properties. I started by creating a SQL query fragment that pulls all properties classified by a Value Type. Now I would like to pull in the default (initial) value assigned. I figured out that it's in the Description table of t_xref, with the property guid in the client field, but I don't know how to write a query that will reliably parse the default value out since the string length may be different depending on other values set. I tried using the template content selector first but I couldn't figure out how to filter to only value properties. I'm still using the default .qeax file but will be migrating to a windows based DBMS soon. Appreciate any help!
Tried using the content selector. Successfully built a query to get value properties but got stuck trying to join and query t_xref for default value.
Edited to add current query and image
Value Properties are block properties that are typed to Value Types. I'm using SysML.
This is my current query, I am no SQL expert! I don't pull anything from t_xref yet but am pulling out only the value properties with this query:
SELECT property.ea_guid AS CLASSGUID, property.Object_Type AS CLASSTYPE, property.Name, property.Note as [Notes], classifier.Name AS TYPE
FROM t_object property
LEFT JOIN t_object classifier ON property.PDATA1 = classifier.ea_guid
LEFT JOIN t_object block on property.ParentID = block.Object_ID
WHERE block.Object_ID = #OBJECTID# AND property.Object_Type = 'Part' AND classifier.Object_Type = 'DataType'
ORDER BY property.Name
I guess that Geert will come up with a more elaborate answer, but (assuming you are after the Run State) here are some details. The value for these Run States is stored in t_object.runstate as one of the crude Sparxian formats. You find something like
#VAR;Variable=v1;Value=4711;Op==;#ENDVAR;
where v1 is the name and 4711 the default in this example. How you can marry that with your template? Not the faintest idea :-/
I can't give a full answer to the original question as I can't reproduce your data, but I can provide an answer for the generic problem of "how to extract data through SQL from the name-value pair in t_xref".
Note, this is heavily dependent on the database used. The example below extracts fully qualified stereotype names from t_xref in SQL Server for custom profiles.
select
substring(
t_xref.Description, charindex('FQName=',t_xref.Description)+7,
charindex(';ENDSTEREO',t_xref.Description,charindex('FQName=',t_xref.Description))
-charindex('FQName=',t_xref.Description)-7
),
Description from t_xref where t_xref.Description like '%FQName%'
This works using:
substring(string, start, length)
The string is the xref description column, and the start and length are set using:
charindex(substring, string, [start position])
This finds the start and end tags within the xref description field, for the data you're trying to parse.
For your data, I imagine something like the below is the equivalent (I haven't tested this). It's then a case of combining it with the query you've already got.
select
substring(
t_xref.Description, #the string to search in
charindex('#VALU=',t_xref.Description,charindex('#NAME=default',t_xref.Description)+6, #the start position, find the position of the first #VALU= tag after name=default
charindex('#ENDVALU;',t_xref.Description,charindex('#VALU=',t_xref.Description))
-charindex('#VALU=',t_xref.Description,charindex('#NAME=default',t_xref.Description))-6 #the length, find the position of the first #ENDVALU tag after the start, and subtract it from the start position
),
Description from t_xref where t_xref.Description like '%#NAME=default%' #filter anything which doesn't contain this tag to avoid "out of range" index errors
I use Eclipse(Oxygen.2) in the Company.
In my database i have a column and it's typ XML.
If I make a SELECT query my return value is object address com.ibm.db2.jcc.am.re#23717212 but I want to have xml index.
What i did :
Open the Eclipse
File-> New Database Connection
Write the Query : Select * from benutzer;
In the message column i have object-ID(com.ibm.db2.jcc.am.re#23717212).
What i need is the index from XML not object-ID.
Apparently the result set grid in Ecliplse does not know how to render the XML data type and simply uses the toString() method. Let Db2 do the job and, as Mark Barinstein suggested in comments, use the XMLSERIALIZE() function to convert XML to a string:
SELECT XMLSERIALIZE(message as VARCHAR(4000)), -- your other columns
FROM BENUTZER
Adjust the target VARCHAR length as necessary.
The problem was the libraries.
I had two libraries : db2jcc.jar and db2jcc4.jar.
The firstone (db2jcc.jar) has blocked the secondone (db2jcc4.jar).
If I remove the first driver then i can see the xml index.
If I change the sequence i can also see the index form xml file.
That was what i need.
cast to char to view the xml.
select xmlserialize(myxmlcolumn) as myxml from mytable
I've got a table TABLE that contains a jsonb column named tags. The tags element in each row may or may not contain a field called group. My goal is to group by tags.group for all rows where tags contains a group field. Like the following postgres query:
select tags->>'group' as group, sum(n) as sum
from TABLE
where tags ? 'group'
group by tags->>'group';
I'm trying to turn it into JOOQ and cannot find out how to express the where tags ? 'group' condition.
For example,
val selectGroup = DSL.field("{0}->>'{1}'", String::class.java, TABLE.TAGS, "group")
dsl().select(selectGroup, DSL.sum(TABLE.N))
.from(TABLE)
.where(TABLE.TAGS.contains('group'))
.groupBy(selectGroup)
This is equivalent to testing contains condition #> in postgres. But I need to do exists condition ?. How can I express that in JOOQ?
There are two things worth mentioning here:
The ? operator in JDBC
Unfortunately, there's no good solution to this as ? is currently strictly limited to be used as a bind variable placeholder in the PostgreSQL JDBC driver. So, even if you could find a way to send that character to the server through jOOQ, the JDBC driver would still misinterpret it.
A workaround is documented in this Stack Overflow question.
Plain SQL and string literals
When you're using the plain SQL templating language in jOOQ, beware that there is a parser that will parse certain tokens of your string, including e.g. comments and string literals. This means that your usage of...
DSL.field("{0}->>'{1}'", String::class.java, TABLE.TAGS, "group")
is incorrect, as '{1}' will be parsed as a string literal and sent to the server as is. If you want to use a variable string literal, do this instead:
DSL.field("{0}->>{1}", String::class.java, TABLE.TAGS, DSL.inline("group"))
See also DSL.inline()
I have a CLOB(2000000) field in a db2 (v10) database, and I would like to run a simple UPDATE query on it to replace each occurances of "foo" to "baaz".
Since the contents of the field is more then 32k, I get the following error:
"{some char data from field}" is too long.. SQLCODE=-433, SQLSTATE=22001
How can I replace the values?
UPDATE:
The query was the following (changed UPDATE into SELECT for easier testing):
SELECT REPLACE(my_clob_column, 'foo', 'baaz') FROM my_table WHERE id = 10726
UPDATE 2
As mustaccio pointed out, REPLACE does not work on CLOB fields (or at least not without doing a cast to VARCHAR on the data entered - which in my case is not possible since the size of the data is more than 32k) - the question is about finding an alternative way to acchive the REPLACE functionallity for CLOB fields.
Thanks,
krisy
Finally, since I have found no way to this by an SQL query, I ended up exporting the table, editing its lob content in Notepad++, and importing the table back again.
Not sure if this applies to your case: There are 2 different REPLACE functions offered by DB2, SYSIBM.REPLACE and SYSFUN.REPLACE. The version of REPLACE in SYSFUN accepts CLOBs and supports values up to 1 MByte. In case your values are longer than you would need to write your own (SQL-based?) function.
BTW: You can check function resolution by executing "values(current path)"