UNIX_TIMESTAMP in SQL Server

Question

I need to create a function in SQL Server 2008 that will mimic mysql\'s UNIX_TIMESTAMP().

Thanks in advance !

Answer 1

Necromancing.
The ODBC-way:

DECLARE @unix_timestamp varchar(20)
-- SET @unix_timestamp = CAST({fn timestampdiff(SQL_TSI_SECOND,{d '1970-01-01'}, CURRENT_TIMESTAMP)} AS varchar(20)) 

IF CURRENT_TIMESTAMP >= '20380119' 
BEGIN 
    SET @unix_timestamp = CAST
    (
        CAST
        (
            {fn timestampdiff(SQL_TSI_SECOND,{d '1970-01-01'}, {d '2038-01-19'})} 
            AS bigint
        )  
        + 
        CAST
        (
            {fn timestampdiff(SQL_TSI_SECOND,{d '2038-01-19'}, CURRENT_TIMESTAMP)}
            AS bigint
        ) 
    AS varchar(20)
    ) 
END 
ELSE 
    SET @unix_timestamp = CAST({fn timestampdiff(SQL_TSI_SECOND,{d '1970-01-01'}, CURRENT_TIMESTAMP)} AS varchar(20))

PRINT @unix_timestamp