bulk

Can anyone out there provide an example of bulk inserts via JConnect (with ENABLE_BULK_LOAD ) to Sybase ASE? I've scoured the internet and found nothing. I got in touch with one of the engineers at Sybase and they provided me a code sample. So, I get to answer my own question. Basically here is a rundown, as the code sample is pretty large... This assumes a lot of pre initialized variables, but otherwise it would be a few hundred lines. Anyone interested should get the idea. This can yield up to 22K insertions a second in a perfect world (as per Sybase anyway). SybDriver sybDriver = (SybDriver

I'm overriding Django's model delete method in order to delete orphan files in the disk for image fields, something like this: class Image(models.Model): img = models.ImageField(upload_to=get_image_path) ... def delete(self, *args, **kwargs): self.img.delete() super(Image, self).delete(*args, **kwargs) This works fine when I delete single objects from the admin, but when I select multiple objects and delete them, this doesn't seem to get called. I have been googling for a while but haven't hit the right keywords to get the answer for this, nor the official documentation seems to talk about

Can you help me to understand this phrase? Without the bulk bind, PL/SQL sends a SQL statement to the SQL engine for each record that is inserted, updated, or deleted leading to context switches that hurt performance. Justin Cave Within Oracle, there is a SQL virtual machine (VM) and a PL/SQL VM. When you need to move from one VM to the other VM, you incur the cost of a context shift. Individually, those context shifts are relatively quick, but when you're doing row-by-row processing, they can add up to account for a significant fraction of the time your code is spending. When you use bulk

Is there any way of performing in bulk a query like INSERT OR UPDATE on the MySQL server? INSERT IGNORE ... won't work, because if the field already exists, it will simply ignore it and not insert anything. REPLACE ... won't work, because if the field already exists, it will first DELETE it and then INSERT it again, rather than updating it. INSERT ... ON DUPLICATE KEY UPDATE will work, but it can't be used in bulk. So I'd like to know if there's any command like INSERT ... ON DUPLICATE KEY UPDATE that can be issued in bulk (more than one row at the same time). You can insert/update multiple