Using GetDate() in SSIS with Derived transformation

Guys:
I’m trying to add a new column using the Derived Column transformation; I need to accomplish the following but not having any luck:

Need to substract 1 ½ day from Current time.
This is what I have:

GETDATE() – 1.5

This is not working,  I know I have to use a cast operator but can’t figure out which one.
Oneill0003Asked:
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LowfatspreadCommented:

use

dateadd(h,-36,getdate())

ie 36 hours

the date day subtraction uages only allows for integer days...
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Oneill0003Author Commented:
What about if i need to substract 20 minutes?

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drydenhoggCommented:
dateadd(mi,-20,getdate())
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Oneill0003Author Commented:
Thanks drydenhogg that worked great!


DATEADD("Minute",-20,GETDATE())
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