Declare a variable in RedShift -


sql server has ability declare variable, call variable in query so: 

declare @startdate date; set @startdate = '2015-01-01';  select * orders orderdate >= @startdate;

does functionality work in amazon's redshift? documentation, looks declare used solely cursors. set looks function looking for, when attempt use that, error. 

set session startdate = '2015-01-01';  [error code: 500310, sql state: 42704]  [amazon](500310) invalid operation: unrecognized configuration parameter "startdate";

is possible in redshift?

no, amazon redshift not have concept of variables. redshift presents postgresql, highly modified.

there mention of user defined functions @ 2014 aws re:invent conference, might meet of needs.

update in 2016: scalar user defined functions can perform computations cannot act stored variables.


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