Magento 1.9 Which database is getQuote()->getGrandTotal() used?

Question

I have this code in a custom module

Mage::getSingleton("checkout/cart")->getQuote()->getGrandTotal()

Which table and which column does this code getting data from?

First I thought it was the field grand_total from sales_flat_quote, but it's not?

Answer 1

For this code below table used

sales_flat_quote

and Feild used is of this table

grand_total

Edit

If you look at this file

app/code/core/Mage/Sales/etc/config.xml

then this is the same table is used for sales/quote

Check this way

 Mage::getSingleton("checkout/cart")->getQuote()->getId();

and check grand_total at that Id