Hi, friend,

Suppose there is table of daily transaction data with 5 fields,

time(date), open(float8), high(float8), low(float8), close(float8)

Is it possible to create a view of weekly data, i.e. open is the first 
day'open, high is the highest of the week, low is the lowest of the week, close 
is the last day's close.

Thank you.

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