2011/1/25 Jasen Betts <[email protected]> > On 2011-01-20, Robert Paresi <[email protected]> wrote: > > Hello, > > > > We have 700 user install base using Sybase SQL Anywhere 9.02 > > > > We are looking at migrating these installations over to PostGres > > > 1. Very Very Short Answer Please - why should we? > > postgres is the best database in the universe. :) > > > 2. Does anyone have a utility or migration application to read SQL > Anywhere > > to go to PostGres > > sed ? Any stock utility is likely to make choices that are sub optimal for > your needs. with 700 changeovers pending I would want complete control > over > how each column is handled. > > > 3. Does PostGres handle column descriptions (ie: you can give each > column a > > 50 character description) and then access it via SQL Result Set (like I > can > > do in Sybase) > > you can put descriptions on columns, I have not hit a length limit. > (probably several megabytes like other text fields). > > Getting descriptions in the same same result set as column data is probably > impractical (see length limit for a possible reason why this has not been > implemented). fetching them separately en-masse and caching them or > fetching > or individually afterwards should not be greatly difficult, resultsets are > returned with the column and table indicated. > > > 4. Is there any Date/TimeStamp issues and conversions I need to know > about. > > I use simply a DATE field and a TIME field - but do not use DATE/TIME > stamp > > fields together. > > time goes upto 24:00:00.999999 just incase you come across a day that long. > so unless that's going to cause problems there should be no issues. > the range supported by date is starts in pre-history and continues > for a few million years into the future. > > > 5. What UI/Developer tools (GUI) are available to manage the database as > > well as add/change columns rather than doing it via SQL commands. > > I hear there are several, But I can't understand why someone would want to > perform non-graphical tasks using a GUI. > I can't understand how to develop and maintain even small data model without diagramming tool which can represent entities and relationships between them. Using pure psql and paper with a pen - is nothing more than LOL.
I recommend dbWrench as a diagramming tool for Postgres. > > -- > ⚂⚃ 100% natural > > -- > Sent via pgsql-general mailing list ([email protected]) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general > -- // Dmitriy.
