how to use date_part in hibernate query? - postgresql

String q = "select id from Calendar c " +
"where c.isActive = 1 and " +
"date_part('dow', '2017-09-19 13:23:23'::date) = c.frequencyValue)";
Query query = em.createQuery(q);
List results = query.getResultList();
If I include ::date, hibernate would complain because : conflicts with parameter, but if I don't, postgres will complain. Could not choose a best candidate function. You might need to add explicit type casts. What can I do?

https://docs.jboss.org/hibernate/orm/3.3/reference/en/html/queryhql.html#queryhql-expressions
as specified extract function should work if the underlying db supports them so:
extract(dow from date '2017-09-19 13:23:23');
should works

Related

HQL / Postgres : EXTRACT(dow from CURRENT_TIMESTAMP) with a parameter

I am trying to implement following query to retrieve users that need to be alerted weekly and send alerts on Monday.
Following query works :
String sql = "SELECT user_id FROM table"
+ " WHERE alert_interval = 7 AND EXTRACT(dow from CURRENT_TIMESTAMP) = 1))";
But if I want to pass a parameter to EXTRACT(dow from CURRENT_TIMESTAMP) like this :
String sql = "SELECT user_id FROM table"
+ " WHERE alert_interval = 7 AND EXTRACT(dow from : currentTs) = 1))";
var args = new MapSqlParameterSource("currentTs", currentTs);
jdbcOperations.query(sql, args, (ResultSet rs) -> ...);
I am getting following error :
nested exception is org.postgresql.util.PSQLException: ERROR: function pg_catalog.date_part(unknown, unknown) is not unique
Hint: Could not choose a best candidate function. You might need to add explicit type casts.
Not sure how I can pass a parameter to EXTRACT(dow from ...) ?
Any pointers would be appreciated.
Thank you.

Springboot JPA Cast numeric substring to string

I have a JPA/Springboot application backed by a Postgres database. I need to get a records that is equal to a substring passed back to the server.
For example:
Select * from dp1_attachments where TRIM(RIGHT(dp1_submit_date_dp1_number::text, 5)) ='00007'
This query works in PgAdmin, but not in the JPA #Query statement.
#Query("SELECT a.attachmentsFolder as attachmentsFolder, a.attachmentNumber as attachmentNumber, a.attachmentName as attachmentName, a.dp1SubmitDateDp1Number as dp1SubmitDateDp1Number,a.attachmentType as attachmentType, a.attachmentDate as attachmentDate, a.attachmentBy as attachmentBy "
+ "FROM DP1Attachments a WHERE TRIM(SUBSTRING(a.dp1SubmitDateDp1Number::text, 5 )) = :dp1Number")
I've also tried CASTing the parameter like this:
#Query("SELECT a.attachmentsFolder as attachmentsFolder, a.attachmentNumber as attachmentNumber, a.attachmentName as attachmentName, a.dp1SubmitDateDp1Number as dp1SubmitDateDp1Number,a.attachmentType as attachmentType, a.attachmentDate as attachmentDate, a.attachmentBy as attachmentBy "
+ "FROM DP1Attachments a WHERE TRIM(SUBSTRING(CAST(a.dp1SubmitDateDp1Number as string, 5 ))) = :dp1Number")
but the application won't even run, and returns an error that the query isn't valid.
If I make no attempt to cast it, I get an error that function pg_catalog.substring(numeric, integer) does not exist
UPDATE
I've also tried creating a native query instead but that also doesn't seem to work.
List<DP1AttachmentsProjection> results = em.createNativeQuery("Select * FROM dp1_attachments WHERE TRIM(RIGHT(CAST(dp1_submit_date_dp1_number as varchar),5)) =" + dp1Number).getResultList();
In place of varchar I have also tried string and text.
Errors come back similar to ERROR: operator does not exist: text = integer. Its like the CAST is being ignored and I'm not sure why.
I also tried the following as a native query:
em.createNativeQuery("Select * FROM dp1_attachments WHERE TRIM(RIGHT(dp1_submit_date_dp1_number::varchar),5)) =" + dp1Number).getResultList();
and get ERROR: syntax error at or near ":"
FINAL SOLUTION
Thanks to #Nenad J I altered the query to get the final working solution:
#Query(value = "SELECT a.attachments_Folder as attachmentsFolder, a.attachment_Number as attachmentNumber, a.attachment_Name as attachmentName, a.dp1_Submit_Date_Dp1_Number as dp1SubmitDateDp1Number,a.attachment_Type as attachmentType, a.attachment_Date as attachmentDate, a.attachment_By as attachmentBy FROM DP1_Attachments a WHERE TRIM(RIGHT(CAST(a.dp1_Submit_Date_Dp1_Number as varchar ), 5 )) = :dp1Number", nativeQuery = true)"
Default substring returns a string, so substring(integer data,5) returns a string. Thus no need for the cast.
#Query("SELECT * FROM DP1Attachments a WHERE TRIM(SUBSTRING(a.dp1SubmitDateDp1Number, 5)) = :dp1Number")
But I recommend in this case use native query like this:
Put this code in your attachment repository.
#Query(value="SELECT * FROM DP1Attachments AS a WHERE TRIM(SUBSTRING(a.dp1SubmitDateDp1Number, 5 )) = :dp1Number", nativeQuery=true)
Be careful with the column's name.

JPA Query with GROUP BY, HAVING and COUNT

So the query below is probably not the most efficient, buy still, I am wondering why it is returning no result, even though the SQL counterpart does. There is no error, I am just getting no result. Is it maybe not the correct equivalent for the query I wrote in MySQL?
This is the JPA JPQL.
Query query = em.createQuery("SELECT sub FROM Subscription sub WHERE "
+ "sub.isSuspended = 0 AND "
+ "(SELECT i FROM Invoice i WHERE i.dateDue < CURRENT_DATE AND i.datePaid IS NULL "
+ "GROUP BY i HAVING COUNT(i.idInvoice) > 2) MEMBER OF sub.invoices");
And this is the SQL from MySQL.
SELECT * from subscription
WHERE subscription.is_suspended = 0 AND id_subscription IN
(SELECT id_subscription FROM invoice
WHERE date_due < CURDATE() AND date_paid IS NULL
GROUP BY id_subscription
HAVING COUNT(*) > 2)
The two queries are not the same. To use the actual query use the NativeQuery createNativeQuery() instead of Query.
In your case the JPA version seems to have syntax errors.
After the AND you are missing the IN operator.
In the nested query you are selecting i instead of something like i.idInvoice
The JPA query should look like
SELECT sub FROM Subscription sub
WHERE sub.isSuspended = 0
AND sub.idSubscription IN
(SELECT i.idInvoice
FROM Invoice i
WHERE i.dateDue < CURRENT_DATE AND i.datePaid IS NULL
GROUP BY i.idInvoice
HAVING COUNT(i.idInvoice) > 2);

Dynamic Variables With PowerQuery

I have a table on my workbook that looks like below
Parameter Value
salestart 01/01/2016
saleend 01/21/2016
And I am trying to query a postgresql database and use the value for salestart and saleend in the where clause. I am just stuck on how to get the syntax perfect to achieve such a result. This is what I have thus far, but I get an error of:
ODBC escape convert error
And this is the actual syntax I am attempting. What must I alter so that this will be a valid statement and return the data I am needing?
let
Parameter = Excel.CurrentWorkbook(){[Name="Parameters"]}[Content],
txtsalestart = Table.TransformColumnTypes(Parameter,{{"salestart", type text}}),
txtsaleend = Table.TransformColumnTypes(Parameter,{{"saleend", type text}}),
Source = Odbc.Query("dsn=123", "Select * from saledb AND CAST(saledate As Date) BETWEEN between '"&#"txtsalestart" & "'" AND '"&#"txtsaleend" & "'#(lf)ORDER BY saleitem ASC")
in
Source
The query value is not built correctly: "'" AND '" should be "' AND '"

Error using CURRENT_TIMESTAMP() into a query

I want to compare two date in jpql query using the current date function
I got an error
Syntax error parsing [SELECT d FROM Dossier d WHERE d.depid=1 AND d.typeDossier = :tpd AND d.dateCreation < CURRENT_TIMESTAMP() + 5].
[105, 107] The left expression is not an arithmetic expression
This is my query:
public List<Dossier> getDossierFindAllParDepartementDBTECHandUrgen() {
return (List<Dossier>) em.createQuery("SELECT d FROM Dossier d WHERE d.depid=1 AND d.typeDossier = :tpd AND " +
"d.dateCreation < CURRENT_TIMESTAMP() + 5",
Dossier.class).setParameter("tpd", "Urgent").getResultList();
}
JPA supports function CURRENT_TIMESTAMP
https://en.wikibooks.org/wiki/Java_Persistence/JPQL#Functions
but will not work with arithmetic operations. You can solve the problem by using a parameter, for example
TypedQuery<Dossier> query = em.createQuery("SELECT d FROM Dossier d WHERE d.depid=1 AND d.typeDossier = :tpd AND " +
"d.dateCreation < :fiveDaysAhead",
Dossier.class);
Date myFiveDaysAhead = new Date(Calendar.getInstance().add(Calendar.DAYS_OF_YEAR,5).getTimeInMillis());//or something
query.setParameter("tpd", "Urgent");
query.setParameter("fiveDaysAhead", myFiveDaysAhead, TemporalType.TIMESTAMP);
It may also be possible to find vendor specific solutions, as i noticed in one other answer https://stackoverflow.com/a/18514326/2835455