Difference in order by clause behaviour in SQL Server 2008 vs 2014 -


i using temp table variable in stored procedure , doing insertion temp table temp table order clause. working in sql server 2008. order by clause working while inserting table.

but have upgraded database sql server 2014 , order by clause behavior has changed. no longer inserts data in ordered manner.

eg :

    declare @table1 table(id int, datecolumn datetime)     declare @table2 table(id int, datecolumn datetime)     declare @table3 table(id int, datecolumn datetime)      insert @table1 values(1, getdate());     insert @table1 values(1, dateadd(hour, 1, getdate()));     insert @table1 values(1, dateadd(hour, 2, getdate()));     insert @table2 values(2, getdate());     insert @table2 values(2, dateadd(minute, 55, getdate()));     insert @table2 values(2, dateadd(minute, 130, getdate()));      insert @table3        select *                     (select * @table1            union             select * @table2) t         order datecolumn      select * @table3

and output correct in sql server 2008 is

id  datecolumn --------------------------- 1   2015-03-31 21:27:48.290 2   2015-03-31 21:27:48.290 2   2015-03-31 22:22:48.290 1   2015-03-31 22:27:48.290 1   2015-03-31 23:27:48.290 2   2015-03-31 23:37:48.290

but in sql server 2014, showing incorrect

id  datecolumn ---------------------------- 1   2015-03-31 10:57:22.920 1   2015-03-31 11:57:22.920 1   2015-03-31 12:57:22.920 2   2015-03-31 10:57:22.920 2   2015-03-31 11:52:22.920 2   2015-03-31 13:07:22.920

how make work in sql server 2014 ?

you have have order clause in select. sql server not guarantee order of rows stays same in insert. either original time column or add identity field.


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