On Thu, 3 Apr 2008, Johan Höök wrote:
Hi Hiep,
you can put in either xxx = NULL
or you can skip it completely:
insert into tbl_1(fld2,fld3) select fld_b, NOW() from tbl_2;
Regards,
/Johan
Hiep Nguyen skrev:
hi all, i have a question on insert ... select statement.
tbl_1(fld1,fld2,fld3, ....)
fld1 int primary key auto_increment not null
tbl_2(fld_a,fld_b,fld_c,...)
how do i construct my select statement so that fld1 is auto increment?
insert into tbl_1(fld1,fld2,fld3) select xxx, fld_b, NOW() from tbl_2 where
fld_a = '5';
what should 'xxx' be???
my goal is to get
fld1 = auto increment
fld2 = fld_b
fld3 = NOW()
i saw someone used '1', other used null for xxx. i'm confused.
thanks.
t. hiep
insert into tbl_1(fld1,fld2,fld3) select NULL,fld_b, NOW() from tbl_2
where fld_a = '5' limit 1;
how do i prevent the insertion when select returned empty record?
thanks,
t. hiep
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