shankha <shankhabanerjee(at)gmail(dot)com> writes:
> PREPARE updatearrayplan(BigInt[], BigInt[]) AS
> for i in size($1)
> DO
> update s.t1
> SET c3 = $2[$i]
> WHERE c2 = $1[$i]
> END FOR
> In this prepared statement I am just trying to explain the algorithm.
> I do not know the exact syntax.
You would need to write a plpgsql function in order to have a loop like
that; there's no loops in bare SQL.
regards, tom lane