QSqlQuery, addBindValue, LargeBlob problem?
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@artwaw , is there anyway I can find out? I'm using HeidiSQL to review the database and that looks ok.
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@SPlatten said in QSqlQuery, addBindValue, LargeBlob problem?:
is there anyway I can find out
Documentation to both, I suppose?
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@artwaw, MariaDB certainly supports LARGEBLOB, no errors in HeidiSQL, so it could be the SQL driver I guess...
@SPlatten How large is the blob in your case? I think I remember reading the advice about large blobs in MariaDB that one should be careful since it is easy to run of memory in the stack or something.
In other words: might be it is worth to change toQSqlQuery *queryBlock = new QSqlQuery()etc. Again, one of the possibilities, I am not certain what fails there.For more information please re-read.
Kind Regards,
Artur -
@SPlatten How large is the blob in your case? I think I remember reading the advice about large blobs in MariaDB that one should be careful since it is easy to run of memory in the stack or something.
In other words: might be it is worth to change toQSqlQuery *queryBlock = new QSqlQuery()etc. Again, one of the possibilities, I am not certain what fails there. -
@SPlatten How large is the blob in your case? I think I remember reading the advice about large blobs in MariaDB that one should be careful since it is easy to run of memory in the stack or something.
In other words: might be it is worth to change toQSqlQuery *queryBlock = new QSqlQuery()etc. Again, one of the possibilities, I am not certain what fails there.@artwaw , the message that appears in dialog:
Lost connection to MySQL server during query QMYSQL3: Unable to execute statementAnd from the event viewer Application:
Aborted connection 3 to db: 'training' host: 'localhost' (Got a packet bigger than 'max_allowed_packet' bytes)However in my code I check the array size for < ULONG_MAX which is 4GB before I try to submit it.
Kind Regards,
Sy -
@artwaw , the message that appears in dialog:
Lost connection to MySQL server during query QMYSQL3: Unable to execute statementAnd from the event viewer Application:
Aborted connection 3 to db: 'training' host: 'localhost' (Got a packet bigger than 'max_allowed_packet' bytes)However in my code I check the array size for < ULONG_MAX which is 4GB before I try to submit it.
@SPlatten said in QSqlQuery, addBindValue, LargeBlob problem?:
max_allowed_packet
So hard to search for
HeideSQL max_allowed_packet? The first hit gives you the config option...Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
Visit the Qt Academy at https://academy.qt.io/catalog -
@artwaw , the message that appears in dialog:
Lost connection to MySQL server during query QMYSQL3: Unable to execute statementAnd from the event viewer Application:
Aborted connection 3 to db: 'training' host: 'localhost' (Got a packet bigger than 'max_allowed_packet' bytes)However in my code I check the array size for < ULONG_MAX which is 4GB before I try to submit it.
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@SPlatten said in QSqlQuery, addBindValue, LargeBlob problem?:
max_allowed_packet
So hard to search for
HeideSQL max_allowed_packet? The first hit gives you the config option...@Christian-Ehrlicher , found this https://docs.oracle.com/cd/E19509-01/820-6323/gicxk/index.html, modified my.ini, your so pissy, where you abused as a child?
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@SPlatten said in QSqlQuery, addBindValue, LargeBlob problem?:
'max_allowed_packet' bytes
Configuration of the server doesn't permit the size you send.
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@Christian-Ehrlicher , found this https://docs.oracle.com/cd/E19509-01/820-6323/gicxk/index.html, modified my.ini, your so pissy, where you abused as a child?
@SPlatten said in QSqlQuery, addBindValue, LargeBlob problem?:
your so pissy
Because you're to lazy (or whatever) to search for the simplest things before you write a new question which every kid could resolve in less than a minute...
Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
Visit the Qt Academy at https://academy.qt.io/catalog -
@SPlatten said in QSqlQuery, addBindValue, LargeBlob problem?:
your so pissy
Because you're to lazy (or whatever) to search for the simplest things before you write a new question which every kid could resolve in less than a minute...
@Christian-Ehrlicher , this forum is a resource full of knowledgeable people, just like a Google search is also a resource, how and what I choose to do is my choice.
