获取最接近的先前日期T-SQL

Question

I need to get select the closest previous date to a date parameter. Currently I am selecting the closest either side of the date using this code:

SELECT TOP 1 equities, fund, e_date
        FROM tbl_assetmix
        WHERE fund = @fund_code
        ORDER BY ABS(DateDiff(dd, e_date, @statementdate)) asc

I know it is really simple but can someone suggest how I would be able to select the closest date prior to the @statementdate parameter?

Thanks, Tristan

Answer 1

Select just lines where date is prior to @statementdate:

SELECT TOP 1 equities, fund, e_date
FROM tbl_assetmix
WHERE fund = @fund_code
AND e_date < @statementdate
ORDER BY ABS(DateDiff(dd, e_date, @statementdate)) asc

or replace the

AND e_date < @statementdate

with

AND e_date <= @statementdate

if the same day is allowed.