Checking Date equality in expression

[sqlpuzzle]

I am trying to get this expression right.

What I need is the value 'Close' whe the 'begindate' = Min('begindate). My expression below is in error. What is the right expression.

= Num( ( { < begindate =  { Min([begindate]) } >} Close) ,'##.#0')

Thanks

[Frank_Hartmann]

maybe this:

= Num( sum( { < begindate =  { '=Min([begindate])' } >} Close) ,'##.#0')

[sqlpuzzle]

But it is summing all the values.Not sure why the begindate = Min(begindate) filter is not getting applied.

[sunny_talwar · Accepted solution]

May be this

= Num(Sum({<begindate =  {"$(=Min({<Close = {'*'}>}[begindate]))"}>} Close) ,'##.#0')