Hi 2017-10-19 17:21 GMT+02:00 Igal @ Lucee.org <i...@lucee.org>:
> Hello, > > In other database servers, which I'm finally dropping in favor of > Postgres, I can do the following (mind you that this is for illustration > only, I do not actually write queries like that): > > DECLARE @query varchar(64) = 'red widget'; > > SELECT * > FROM products > WHERE col1 LIKE @query > OR col2 LIKE @query > OR col3 LIKE @query > OR col4 LIKE @query > OR col5 LIKE @query > > The point is, though, that I can change the @query variable in one place > which is very convenient. > > Is it still true (the posts I see on this subject are quite old) that I > can not do so in Postgres outside of a stored procedure/function? And if > so, what's the reason of not adding this feature? Seems very useful to me. > Currently psql has client side variables. pgAdmin3 has some script language too - https://www.pgadmin.org/docs/pgadmin3/1.22/pgscript.html Server side variables are accessible only inside PLpgSQL variables. There was lot of discussion about server side variables https://wiki.postgresql.org/wiki/Variable_Design, but nobody write final patch. There is not clean result if we want dynamic variables, static variables or both. p.s. Your query should be terribly slow. When I see it, I am less sure, so server side variables are good idea :) Regards Pavel > Thanks, > > > Igal Sapir > Lucee Core Developer > Lucee.org <http://lucee.org/> >
