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AW: InstantDB: Row Size limit?


Hi Peter,
thanks for the reply. This is intersting to know, I always thought it was variable length (that's what the docs say...).
I'd like to use the TEXT type, but I'm using InstantDB with Enhydra DODS and DODS doesn't seem to support long datatypes.
I still don't understand why the table can't be created in the first place, but I guess hacking the DODS generated code to retrieve
TEXT values would be the better choice in the long run anyway.

Thanks again,
markus

> -----Ursprüngliche Nachricht-----
> Von: owner-instantDB@Enhydra.ORG [mailto:owner-instantDB@Enhydra.ORG]Im
> Auftrag von Peter Hearty
> Gesendet: Freitag, 1. September 2000 09:25
> An: instantDB@enhydra.org
> Betreff: Re: InstantDB: Row Size limit?
>
>
> Marcus
>
> All of InstantDB's table rows are fixed length, unless you use one of the
> BINARY types. If you allocate a 65535 varchar field then you'll be
> allocating a fixed size 65535*2 ('cos it's unicode) field in every row. If
> you want genuine variable length character fields, use the TEXT type.
>
> Regards
>
> Peter Hearty
> Lutris Technologies (UK)
> ----- Original Message -----
> From: "Markus Strickler" <mstrickler@gmx.de>
> To: <instantdb@enhydra.org>
> Sent: Thursday, August 31, 2000 11:51 PM
> Subject: InstantDB: Row Size limit?
>
>
> > Hi!
> > Just tried to create the following table:
> >
> > create table spice
> > (
> >     sciName VARCHAR(1024) DEFAULT "" NOT NULL   ,
> >     history VARCHAR(1024) DEFAULT "" NULL   ,
> >     healthBenefits VARCHAR(1024) DEFAULT "" NULL   ,
> >     botany VARCHAR(65535) DEFAULT "" NULL   ,
> >     culinaryUse VARCHAR(65535) DEFAULT "" NULL   ,
> >     name VARCHAR(1024) DEFAULT "" NOT NULL   ,
> >     availability VARCHAR(65535) DEFAULT "" NULL   ,
> >     aliases VARCHAR(1024) DEFAULT ""  NULL  ,
> >     oid DECIMAL(19,0) NOT NULL PRIMARY KEY,
> >     version INTEGER NOT NULL
> >
> > );
> >
> > using ScriptTool and InstantDB 3.14 and 3.20b1 on Win2K.
> > I get the following error:
> >
> > java.sql.SQLException:
> >         at org.enhydra.instantdb.db.SQLProg.execute(SQLProg.java:276)
> >         at
> > org.enhydra.instantdb.jdbc.idbStatement.execute(idbStatement.java, Co
> > mpiled Code)
> >         at
> > org.enhydra.instantdb.jdbc.idbStatement.executeUpdate(idbStatement.ja
> > va:103)
> >         at org.enhydra.instantdb.SampleThread.run(ScriptTool.java,
> Compiled
> > Code
> > )
> >         at java.lang.Thread.run(Thread.java:479)
> >
> > If I reduce the size of one of the 65535 bytes large varchar fields the
> > table get built.
> >
> > Is there a limit to the maximum size of a table row? If so, is there a
> > config paramter to rise this limit?
> >
> > Reagrds,
> > -markus
> >
> > --------------------------------------------------------------------------
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> >
>
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