update and delete syntax in lua program

I am getting nil value when I tried to update the data for below code :

    local update_statement =db:prepare[[ UPDATE list SET :name :icon WHERE :id]]

    update_statement:bind_names{  name = aName,  开发者_StackOverflow中文版 icon = aIcon,  id = aId }

    update_statement:step()

    update_statement:reset()

And also I need the syntax for delete operation in lua program.

Please help me

Thank you, Madan mohan.

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You need to learn SQL's syntax.

Basically, you're not telling which columns you want to update, you're only giving their values.

local update_statement = db:prepare[[ UPDATE list SET name = :name, icon = :icon WHERE id = :id]]

Here's the syntax for the DELETE statement:

local delete_statement = db:prepare[[ DELETE FROM list WHERE id = :id]]