i'm using jdbcTemplate to insert and delete from dataBase.
I have a probleme with delete using parametres, (it work for insert).
My code :
String testSql = "DELETE FROM RDWH14.RDDH_SERV WHERE CODE_PRDT=?";
int row =jdbc.update(testSql,"r"); // when i put "r" instead of ? it also work !
System.out.println(row); // zero, and still present in DB
thank you in advance for your responses.
Related
How is the difference between this two news?
New
ProductId = &ProductId
ProductPriceListDate = &Today
ProductPriceListPrice = &price
EndNew
and
&Product = new()
&Product.ProductId = &ProductId
&Product.ProductPriceListDate = &Today
&Product.ProductPriceListPrice = &price
commit
Supossing i don't fill this properties, in both way the record will be inserted with null or it will be inserted with empty ('') and 0?
First option is inserting a record directly in the database and null or empty value will be used depending on Initialize not referenced attritutes property.
Second option I think that you're using a Business Component. This case is quite different because is not only inserting a record but triggering transaction rules.
Anyway, in this case "empty" is stored
Note: it seems that you forgot to include save() method in the second option.
Please check the below query I am trying to update a row by the composite key
my key combination is like:
int id
int versionId
String languageId
and query is:
#Transactional
#Modifying
#Query("update languageEntity l set l.language = :language where l.languageId = :languageId")
int UpdateProcessLanguage(#Param("language ") String processDesTranslation, #Param("languageId ") UserLanguageId languageId);
I am not getting any exception. function is returning 0, means no row effected.
please check what is worng.
It's hard to say without knowing the data. As a first step I would log the generated SQL statements (see how to log sql statements in spring-boot) and check if they look right.
Why you dont wan't to use save() method for that? Just change language property on your object and pass it to the save method. It will update the row.
i'm just starting out with Dexie, and I seem to be coming unstuck.
I have a small database (less than 1000 rows), and i'm trying to delete each row one-by-one once I know that the row has been sent to a remote API.
I can also successfully save to the table (which is defined by an ID and a column storing a serialised object)
here's my code:
if (online) {
//we query the db and send each event
database.open()
let allEvents = database.events.toCollection()
let total = allEvents.count(function (count) {
console.log(count + ' events in total')
//a simple test to ensure we're seeing the right number of records
})
allEvents.each(function(thisEvent){
//push to remote API
console.log('deleting ' + thisEvent.id)
database.events.delete(thisEvent.id) //<= this doesn't seem to be working
})
}
All of this with the exception of the final delete statement.
Any ideas on how I should fix this? the important thing for me is to delete on a per-row basis.
thanks in advance!
I was experiencing the same problem, and the answer from Eugenia Pais wasn't working for me. So after some tests, I saw the trouble was with the type of the variable: I was using a string, but a number is needed, so this is how I solved it:
function removeRow (primaryKey) {
primaryKey = parseInt(primaryKey);
databaseName.tableName.where('primaryKey').equals(primaryKey).delete().then(function(deleteCount) {
console.log ("Deleted " + deleteCount + " rows");
}).catch(function(error) {
console.error ("Error: " + error);
});
So be aware you are using a number as argument.
The correct way to delete each row should be selecting the specific row and delete it:
database.tableName.where(indexId).equals(indexValue).delete();
The data type of the key is not a problem you could verify it in my example here: example
db.example.where('key').equals('one').delete();
Maybe you are trying to delete by a property that not is an index.
Considering a Spring Boot, neo4j environment with Spring-Data-neo4j-4 I want to make a delete and get an error message when it fails to delete.
My problem is since the Repository.delete() returns void I have no ideia if the delete modified anything or not.
First question: is there any way to get the last query affected lines? for example in plsql I could do SQL%ROWCOUNT
So anyway, I tried the following code:
public void deletesomething(Long somethingId) {
somethingRepository.delete(getExistingsomething(somethingId).getId());
}
private something getExistingsomething(Long somethingId, int depth) {
return Optional.ofNullable(somethingRepository.findOne(somethingId, depth))
.orElseThrow(() -> new somethingNotFoundException(somethingId));
}
In the code above I query the database to check if the value exist before I delete it.
Second question: do you recommend any different approach?
So now, just to add some complexity, I have a cluster database and db1 can only Create, Update and Delete, and db2 and db3 can only Read (this is ensured by the cluster sockets). db2 and db3 will receive the data from db1 from the replication process.
For what I seen so far replication can take up to 90s and that means that up to 90s the database will have a different state.
Looking again to the code above:
public void deletesomething(Long somethingId) {
somethingRepository.delete(getExistingsomething(somethingId).getId());
}
in debug that means:
getExistingsomething(somethingId).getId() // will hit db2
somethingRepository.delete(...) // will hit db1
and so if replication has not inserted the value in db2 this code wil throw the exception.
the second question is: without changing those sockets is there any way for me to delete and give the correct response?
This is not currently supported in Spring Data Neo4j, if you wish please open a feature request.
In the meantime, perhaps the easiest work around is to fall down to the OGM level of abstraction.
Create a class that is injected with org.neo4j.ogm.session.Session
Use the following method on Session
Example: (example is in Kotlin, which was on hand)
fun deleteProfilesByColor(color : String)
{
var query = """
MATCH (n:Profile {color: {color}})
DETACH DELETE n;
"""
val params = mutableMapOf(
"color" to color
)
val result = session.query(query, params)
val statistics = result.queryStatistics() //Use these!
}
I have no problem when trying to execute and insert or a delete SQL Command. However, this update command does not seems to work well and I am having a hard time to figure it out. Kindly help me please.
I am using an i Series or AS/400 database.
Imports IBM.Data.DB2
Imports IBM.Data.DB2.iSeries
Public conn As New iDB2Connection
Public str As String = "Datasource=10.0.1.11;UserID=edith;password=edith;DefaultCollection=impexplib"
Dim cmdUpdate As New iDB2Command
Dim sqlUpdate As String
conn = New iDB2Connection(str)
conn.Open()
sqlUpdate = "UPDATE impexplib.expusers SET loginDate=#loginDate, loginTime=#loginTime WHERE username=#username"
cmdUpdate.Parameters.Add("username", iDB2DbType.iDB2VarChar)
cmdUpdate.Parameters.Add("loginDate", iDB2DbType.iDB2Date)
cmdUpdate.Parameters.Add("loginTime", iDB2DbType.iDB2Time)
cmdUpdate.Parameters("username").Value = txtUsername.Text
cmdUpdate.Parameters("loginDate").Value = Now.ToString("d")
cmdUpdate.Parameters("loginTime").Value = Now.ToString("T")
cmdUpdate.Connection = conn
cmdUpdate.CommandText = sqlUpdate
cmdUpdate.ExecuteNonQuery()
conn.Close()
Please help me what I am doing wrong? The update code does not really work. Even a simple update of password does not work to.
Thanks!
Assuming no error messages anywhere, if no update is occurring, then the WHERE clause is not being satisfied. Make sure that the user name in DB2 exactly matches the parameter used in the WHERE clause. Very often, DB2 columns are CHAR, not VARCHAR or the other way round. You may also have a situation where the DB2 column is all upper case and the parameter is mixed case. Imagine the DB2 column has "FRED BLOGGS " and your parameter has "Fred Bloggs". This won't satisfy the WHERE clause and no rows will be updated.