sql - How to preserve datatype following a SELECT INTO? -


i have table t1 date/time fields. i've combined several queries on table union query, , made new table t2 using select on union follows:

select * t2 (select * query1_t1 union select * query2_t1)

the problem query1_t1 substitutes blank string constant of date fields, results in t2 having text fields instead of date/time fields. illustrate:

query1_t1: select myudf(sometextfield),"" newdatefield t1  query2_t1: select anotherudf(sometextfield),olddatefield t1

where olddatefield date/time.

is there way can structure select into, or change query1_t1, i'll still same results query newdatefield end date/time?

you can create table separately adding data it. first, define fields appropriate data types. use insert (columns) select * from populate it.

updated:

or can hybrid approach. first select into no rows @ all:

select * t2 query2_t1 1=0

this create of structure. can go , manually adjust data types didn't come through properly.

with structure adjusted, can safely:

insert t2  select * query1_t1 union  select * query2_t1

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