Luigi, Good answer for determining if a document exists, but how determine is a class exists (using SQL)?
Thanks, Patrick On Monday, March 23, 2015 at 1:31:49 AM UTC-6, Luigi Dell'Aquila wrote: > > Hi > > Upsert is just a keyword in the UPDATE statement, eg. > > update V set id = '12', name = 'foo' upsert where id = '12' > > you can find all the docs here > http://www.orientechnologies.com/docs/last/SQL-Update.html > > Luigi > > > 2015-03-22 0:17 GMT+01:00 pumplerod <pump...@gmail.com <javascript:>>: > >> Is there example usage of this? When I try and use upsert all I get is >> an error. >> >> I have a class Locale which I only want to add if the specified locale >> does not already exist... >> >> upsert into Locale set type='state' name='TX' where type='state' name= >> 'TX' >> >> >> The error states that there is no command executor for command request: >> sql.upsert >> >> >> On Wednesday, February 4, 2015 at 9:08:04 AM UTC-6, Luigi Dell'Aquila >> wrote: >>> >>> Hi Artem, >>> >>> have you tried with UPSERT? >>> Here you can find all the references: >>> >>> http://www.orientechnologies.com/docs/last/orientdb.wiki/SQL-Update.html >>> >>> Regards >>> >>> Luigi >>> >>> >>> 2015-02-04 13:25 GMT+01:00 Artem Shoobovych <shybo...@gmail.com>: >>> >>>> Hi there! >>>> >>>> Lately, I've been playing with OrientDB of 1.7.10 and now 2.0.1. And >>>> currently I am stuck with poor SQL syntax or my misunderstanding of it. >>>> >>>> What I want is to create an instance of a class if it does not exist. I >>>> tried different solutions, like `ifnull`, `first` and `if`. But it seems >>>> to >>>> work only on existing values. >>>> >>>> For example, let us have a class `City` with only one instance - >>>> `{"name": "Lisboa"}`. >>>> >>>> These do not work: >>>> >>>> select if(count(select City where name = "Krakow") < 1, null, (insert >>>> into City set name = "Krakow" return @rid)) >>>> >>>> >>>> select ifnull((select @rid from City where name = "Krakow"), (insert >>>> into City set name = "Krakow" return @rid)) >>>> >>>> >>>> select first((select @rid from City where name = "Krakow"), (insert >>>> into City set name = "Krakow")) >>>> >>>> >>>> I believe I need some kind of `exists` operator: >>>> >>>> select if( exists(select from City where name = "Krakow"), (select >>>> @rid from City where name = "Krakow"), (insert into City set name = >>>> "Krakow")) >>>> >>>> >>>> Are there any possibility for this except stored functions? >>>> >>>> Thanks! >>>> >>>> -- >>>> >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "OrientDB" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to orient-databa...@googlegroups.com. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >> >> --- >> You received this message because you are subscribed to the Google Groups >> "OrientDB" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to orient-databa...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > -- --- You received this message because you are subscribed to the Google Groups "OrientDB" group. To unsubscribe from this group and stop receiving emails from it, send an email to orient-database+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
