I have a situation where I need to find an entity matching a given filename. The filename is in this form:
filename1 = "ABCD_126518.pdf";
filename2 = "XYZ_32162.pdf";
In the Oracle DB, I have entities with filename_patterns like the following:
ID | filename_pattern
1 | ABCD_
2 | KLM
3 | XYZ_
I need to find the pattern ID that the given filename matches to. In the given example it should be ID = 1 for filename1 and ID = 3 for filename2. How should the query look like in Java for the named query?
I need something like
SELECT p FROM FilenamePattern p WHERE p.filename_pattern || "%" LIKE :param;
We use Oracle DB and JPA 1.0.
How about,
SELECT p FROM FilenamePattern p WHERE :param LIKE CONCAT(p.filename_pattern, "%")
Related
Consider the following xml document that is stored in a PostgreSQL field:
<E_sProcedure xmlns="http://www.minushabens.com/2008/FMSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" modelCodeScheme="Emo_ex" modelCodeSchemeVersion="01" modelCodeValue="EMO_E_PROCEDURA" modelCodeMeaning="Section" sectionID="11">
<tCatSnVsn_Pmax modelCodeScheme="Emodinamica_referto" modelCodeSchemeVersion="01" modelCodeValue="tCat4" modelCodeMeaning="My text"><![CDATA[1]]></tCatSnVsn_Pmax>
</E_sProcedure>
If I run the following query I get the correct result for Line 1, while Line 2 returns nothing:
SELECT
--Line 1
TRIM(BOTH FROM array_to_string((xpath('//child::*[#modelCodeValue="tCat4"]/text()', t.xml_element)),'')) as tCatSnVsn_Pmax_MEANING
--Line2
,TRIM(BOTH FROM array_to_string((xpath('/tCatSnVsn_Pmax/text()', t.xml_element)),'')) as tCatSnVsn_Pmax
FROM (
SELECT unnest(xpath('//x:E_sProcedure', s.XMLDATA::xml, ARRAY[ARRAY['x', 'http://www.minushabens.com/2008/FMSchema']])) AS xml_element
FROM sr_data as s)t;
What's wrong in the xpath of Line 2?
Your second xpath() doesn't return anything because of two problems. First: you need to use //tCatSnVsn_Pmax as the xml_element still starts with <E_sProcedure>. The path /tCatSnVsn_Pmax tries to select a top-level element with that name.
But even then, the second one won't return anything because of the namespace. You need to pass the same namespace definition to the xpath(), so you need something like this:
SELECT (xpath('/x:tCatSnVsn_Pmax/text()', t.xml_element, ARRAY[ARRAY['x', 'http://www.minushabens.com/2008/FMSchema']]))[1] as tCatSnVsn_Pmax
FROM (
SELECT unnest(xpath('//x:E_sProcedure', s.XMLDATA::xml, ARRAY[ARRAY['x', 'http://www.minushabens.com/2008/FMSchema']])) AS xml_element
FROM sr_data as s
)t;
With modern Postgres versions (>= 10) I prefer using xmltable() for anything nontrivial. It makes passing namespaces easier and accessing multiple attributes or elements.
SELECT xt.*
FROM sr_data
cross join
xmltable(xmlnamespaces ('http://www.minushabens.com/2008/FMSchema' as x),
'/x:E_sProcedure'
passing (xmldata::xml)
columns
sectionid text path '#sectionID',
pmax text path 'x:tCatSnVsn_Pmax',
model_code_value text path 'x:tCatSnVsn_Pmax/#modelCodeValue') as xt
For your sample XML, the above returns:
sectionid | pmax | model_code_value
----------+------+-----------------
11 | 1 | tCat4
I have the following POSTGRESQL table
id | name | email | weightsovertime | joined
20 | Le | le#gmail.com | [] | 2018-06-09 03:17:56.718
I would like to know how to push data (JSON object or just object) into the weightsovertime array.
And since I am making a back-end server, I would like to know the KnexJS query that does this.
I tried the following syntax but it does not work
update tableName set weightsovertime = array_append(weightsovertime,{"weight":55,"date":"2/3/96"}) where id = 20;
Thank you
For anyone who happens to land on this question, the solution using Knex.js is:
knex('table')
.where('id', id)
.update({
arrayColumn: knex.raw(`arrayColumn || ?::jsonb`, JSON.stringify(arrayToAppend))
})
This will produce a query like:
update tableName
set weightsovertime = arrayColumn || $1::json
where id = 20;
Where $1 will be replaced by the value of JSON.stringfy(arrayToAppend). Note that this conversion is obligatory because of a limitation of the Postegre drive
array_append is for native arrays - a JSON array inside a jsonb column is something different.
Assuming your weightsovertime is a jsonb (or json) you have to use the concatenation operator : ||
e.g:
update the_table
set weitghtsovertime = weightsovertime||'[{"weight": 55, "date": "1996-03-02"}]'
where id = 20;
Online example: http://rextester.com/XBA24609
I have a table that includes the userID that sent the file, the userID that the file was sent to, the filename and the date it was sent.
http://sqlfiddle.com/#!6/855cc6
I'm trying to get a statement that returns one row per filename sent with the list of records (one per file sent) with the names of the people I sent it to at the end of the row
Something like this:
01/08/2014 | "main doc" | "Jon P, Mike S, Ron W"
04/04/2014 | "other doc" | "Jon P, Mike S"
10/10/2014 | "last doc" | "Ron W"
(where the date is the oldest instance of the DateSent datetime field).
Sorry I don't know how to create functions in sqlfiddler so let's assume that there is a scalar function named "GetName(UserID)" that returns a name of the user passed as parameter. It returns one row only.
You can use FOR XML PATH to concatenate values like this:
SELECT DISTINCT
DateSent,
FileName,
SUBSTRING
(
(
SELECT CONCAT(',', t1.SentToUserID) --maybe GetName(t1.SentToUserID)
FROM FileSent t1
WHERE t1.FileName = t2.FileName AND t1.DateSent = t2.DateSent AND t1.UserID = t2.UserID
ORDER BY t1.FileName
FOR XML PATH ('')
), 2, 1000
) [SentFiles]
FROM FileSent t2
ORDER BY DateSent
Sample SQL Fiddle (two slightly different versions).
To get just the minimum date you can use MIN(DateSent) and GROUP BY on FileName and UserId
SELECT DISTINCT
MIN(DateSent) DateSent,
FileName,
STUFF ((SELECT CONCAT(',', t1.SentToUserID)
FROM FileSent T1
WHERE t1.FileName = t2.FileName AND t1.UserID = t2.UserID
FOR XML PATH('')
),1,1,'' ) [SentFiles]
FROM FileSent T2
GROUP BY FileName, UserID
SQL Fiddle for this.
how can I find pattern relationships using rest cypher?
My query running on terminal :-
MATCH (n)<-[:DEPENDS_ON*]-(dependent) RETURN n.host as Host,
count(DISTINCT dependent) AS Dependents ORDER BY Dependents
DESC LIMIT 1**
output is :-
+--------------------+
| Host | Dependents |
+--------------------+
| "SAN" | 20 |
+--------------------+
where as equivalent query with rest :-
String query = "{\"query\" : \"MATCH (website)<-[rel]-(dependent) " +
"WHERE TYPE(rel) = {rtype} RETURN website.host as Host," +
"count(DISTINCT dependent) AS Dependents ORDER BY Dependents DESC LIMIT 1" +
" \", \"params\" : {\"rtype\" : \"DEPENDS_ON*\"}}";
and output is empty(no records) !!!
Any help appreciated.
P.S- When we dont use "*" in our query everything goes ok. IE both queries give same result
In the second query you are passing the relationship type as "DEPENDS_ON*" which is incorrect since the asterisk is being included.
The asterisk is for allowing arbitrary length paths for the specified relationship but is not part of the type.
I have a table EmployeeMoves:
| EmployeeID | CityIDs
+------------------------------
| 24 | 23,21,22
| 25 | 25,12,14
| 29 | 1,2,5
| 31 | 7
| 55 | 11,34
| 60 | 7,9,21,23,30
I'm trying to figure out how to expand the comma-delimited values from the EmployeeMoves.CityIDs column to populate an EmployeeCities table, which should look like this:
| EmployeeID | CityID
+------------------------------
| 24 | 23
| 24 | 21
| 24 | 22
| 25 | 25
| 25 | 12
| 25 | 14
| ... and so on
I already have a function called SplitADelimitedList that splits a comma-delimited list of integers into a rowset. It takes the delimited list as a parameter. The SQL below will give me a table with split values under the column Value:
select value from dbo.SplitADelimitedList ('23,21,1,4');
| Value
+-----------
| 23
| 21
| 1
| 4
The question is: How do I populate EmployeeCities from EmployeeMoves with a single (even if complex) SQL statement using the comma-delimited list of CityIDs from each row in the EmployeeMoves table, but without any cursors or looping in T-SQL? I could have 100 records in the EmployeeMoves table for 100 different employees.
This is how I tried to solve this problem. It seems to work and is very quick in performance.
INSERT INTO EmployeeCities
SELECT
em.EmployeeID,
c.Value
FROM EmployeeMoves em
CROSS APPLY dbo.SplitADelimitedList(em.CityIDs) c;
UPDATE 1:
This update provides the definition of the user-defined function dbo.SplitADelimitedList. This function is used in above query to split a comma-delimited list to table of integer values.
CREATE FUNCTION dbo.fn_SplitADelimitedList1
(
#String NVARCHAR(MAX)
)
RETURNS #SplittedValues TABLE(
Value INT
)
AS
BEGIN
DECLARE #SplitLength INT
DECLARE #Delimiter VARCHAR(10)
SET #Delimiter = ',' --set this to the delimiter you are using
WHILE len(#String) > 0
BEGIN
SELECT #SplitLength = (CASE charindex(#Delimiter, #String)
WHEN 0 THEN
datalength(#String) / 2
ELSE
charindex(#Delimiter, #String) - 1
END)
INSERT INTO #SplittedValues
SELECT cast(substring(#String, 1, #SplitLength) AS INTEGER)
WHERE
ltrim(rtrim(isnull(substring(#String, 1, #SplitLength), ''))) <> '';
SELECT #String = (CASE ((datalength(#String) / 2) - #SplitLength)
WHEN 0 THEN
''
ELSE
right(#String, (datalength(#String) / 2) - #SplitLength - 1)
END)
END
RETURN
END
Preface
This is not the right way to do it. You shouldn't create comma-delimited lists in SQL Server. This violates first normal form, which should sound like an unbelievably vile expletive to you.
It is trivial for a client-side application to select rows of employees and related cities and display this as a comma-separated list. It shouldn't be done in the database. Please do everything you can to avoid this kind of construction in the future. If at all possible, you should refactor your database.
The Right Answer
To get the list of cities, properly expanded, from a table containing lists of cities, you can do this:
INSERT dbo.EmployeeCities
SELECT
M.EmployeeID,
C.CityID
FROM
EmployeeMoves M
CROSS APPLY dbo.SplitADelimitedList(M.CityIDs) C
;
The Wrong Answer
I wrote this answer due to a misunderstanding of what you wanted: I thought you were trying to query against properly-stored data to produce a list of comma-separated CityIDs. But I realize now you wanted the reverse: to query the list of cities using existing comma-separated values already stored in a column.
WITH EmployeeData AS (
SELECT
M.EmployeeID,
M.CityID
FROM
dbo.SplitADelimitedList ('23,21,1,4') C
INNER JOIN dbo.EmployeeMoves M
ON Convert(int, C.Value) = M.CityID
)
SELECT
E.EmployeeID,
CityIDs = Substring((
SELECT ',' + Convert(varchar(max), CityID)
FROM EmployeeData C
WHERE E.EmployeeID = C.EmployeeID
FOR XML PATH (''), TYPE
).value('.[1]', 'varchar(max)'), 2, 2147483647)
FROM
(SELECT DISTINCT EmployeeID FROM EmployeeData) E
;
Part of my difficulty in understanding is that your question is a bit disorganized. Next time, please clearly label your example data and show what you have, and what you're trying to work toward. Since you put the data for EmployeeCities last, it looked like it was what you were trying to achieve. It's not a good use of people's time when questions are not laid out well.