I have problem using query whereraw on laravel 5.5 postgresql, for this case i want to select data by colors. Data example
Source postgresql documentation postgres. I'm success to try on execute sql like this success example execute query. But fail using laravel example source code. Error on laravel
The problem is that your statement contains a question mark. When using the whereRaw method, the question mark is an expected parameter, which aren't providing in your call.
However it seems that there isn't a real solution for this issue. I suggest you take a look at Question mark operator in query, it handles about a similar issue.
Related
I havent been able to find this in the docs so it may not exist - does openedge have a SELECT ##VERSION type of query to return the DB version?
Thanks!
You can get the version indirectly by querying _dbstatus._dbStatus-ShmVers
The mapping of _dbStatus-ShmVers to actual version numbers is described in this kbase: https://knowledgebase.progress.com/articles/Article/P39456
No, there is no such query that returns the OpenEdge database version. As an alternate, a User Defined Function (UDF) can be written to return the version information. This article describes the ways to get OpenEdge database version. You can use one of these approaches in the UDF to get the database version. UDF examples can be found here.
I have next issue:
I have list of names, based on which I want to filter.The problem is that I have not full names(Because I'm receiving them from ui), and I have, for example, this array= ['Joh', 'Michae'].
So, I want to filter based on this array.
I wrote query in PostgreSQL
select * from q_ob_person where name like any (array['%Хомяченко%', '%Вартопуз%']);
And I want to ask how to write JPQL query gor this.
Is there an option to call postgresql function like any from JPQL?
JPA 2.1 allows invocation of any SQL function using
FUNCTION(sqlFuncName, sqlArgs)
So you could likely do something like (note never tried this LIKE ANY you refer to, just play around with it)
FUNCTION("LIKE", FUNCTION("ANY", arrayField))
Obviously by invoking SQL functions specific to a particular RDBMS you lose database independence (in case that's of importance).
I have a stored procedure in my project under sql/my_prod.sql
there I have my function delete_entity
In my entity
#NamedNativeQuery(name = "delete_entity_prod",
query = "{call /sql/delete_entity(:lineId)}",
and I call it
Query query = entityManager.createNamedQuery("delete_entity_prod")
setParameter("lineId",lineId);
I followed this example: http://objectopia.com/2009/06/26/calling-stored-procedures-in-jpa/
but it does not execute the delete and it does not send any error.
I haven't found clear information about this, am I missing something? Maybe I need to load the my_prod.sql first? But how?
JPA 2.1 standardized stored procedure support if you are able to use it, with examples here http://en.wikibooks.org/wiki/Java_Persistence/Advanced_Topics#Stored_Procedures
This is actually they way you create a query.
Query query = entityManager.createNamedQuery("delete_entity_prod")
setParameter("lineId",lineId);
To call it you must execute:
query.executeUpdate();
Of course, the DB must already contain the procedure. So if you have it defined in your SQL file, have a look at Executing SQL Statements from a Text File(this is for MySQL but other database systems use a similar approach to execute scripts)
There is no error shown because query is not executed at any point - just instance of Query is created. Query can be executed by calling executeUpdate:
query.executeUpdate();
Then next problem will arise: Writing some stored procedures to file is not enough - procedures live in database, not in files. So next thing to do is to check that there is correct script to create stored procedure in hands (maybe that is currently content of sql/my_prod.sql) and then use that to create procedure via database client.
All JPA implementations do not support calling stored procedures, but I assume Hibernate is used under the hood, because that is also used in linked tutorial.
It can be the case that current
{call /sql/delete_entity(:lineId)}
is right syntax for calling stored procedure in your database. It looks rather suspicious because of /sql/. If it turns out that this is incorrect syntax, then:
Consult manual for correct syntax
Test via client
Use that as a value of query attribute in NamedNativeQuery annotation.
All that with combination MySQL+Hibernate is explained for example here.
Problem
I need to execute a raw SQL query from LINQ to Entities and retrieve the result. The query returns the current date/time from the SQL Server instance, and looks like this:
SELECT GETDATE()
[Edit]
I'm using a data model that was created database-first.
[/Edit]
What I've Tried
I've researched this issue on the interwebz and been unable to find a technique to do this. I was able to learn how to do this using LINQ to SQL, but since I'm not using that, it's of no help.
Heres what you are after
var time = context.Database.SqlQuery<DateTime>("SELECT GETDATE()").FirstOrDefault();
You can read more about raw sql and EF here http://msdn.microsoft.com/en-us/data/jj592907.aspx
I was planning to use the WITH clause with PostgreSQL, but it doesn't seem to support the command. Is there a substitute command?
What I want to do is with one query select several sub-resultsets and use parts of the sub-resultsets to create my final SELECT.
That would have been easy using the WITH clause.
UPDATE:
Opps! I discovered that I misunderstood the error message I got; and pgSQL does support WITH.
PostgreSQL supports common-table expressions (WITH queries) in version 8.4 and above. See common table expressions in the manual.
You should really include your PostgreSQL version, the exact text of the error message, and the exact text of any query you ran in your question. Where practical/relevant also include table definitions, sample data, and expected results.