sql server - Error converting data type varchar to datetime. Need to return records based on the date or all records if no date is specified -


i have implemented storedprocedure , want storedprocedure return records if no parameter sent or records based on parameter sent. using date parameter. getting error when executing exec [dbo].[getlog] '27/07/2017' . error

error converting data type varchar datetime.

could tell me incorrect in logic

create procedure [dbo].[getlog]  @datefrom datetime   begin     -- set nocount on added prevent result sets     -- interfering select statements.     set nocount on;     select * [coreanalytics].[dbo].[logs]     [timestamp]  > isnull(@datefrom, 0)  ; end go

if understand correct want return records if @datefrom null, or filter on variable.
think need then

create procedure [dbo].[getlog] @datefrom datetime   begin     -- set nocount on added prevent result sets     -- interfering select statements.     set nocount on;      select * [coreanalytics].[dbo].[logs]     (@datefrom null or [timestamp] > @datefrom) end

make sure passing valid datetime when calling procedure.
best use universal format work database,

yyyymmdd format work. see http://www.karaszi.com/sqlserver/info_datetime.asp#dtformatsinput

exec [dbo].[getlog] '20170727'

should work


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