9 lines
271 B
Text
9 lines
271 B
Text
# PRN in range(0,n)
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create or replace function prn(n) as trunc(random() * n)::BIGINT;
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create or replace function list_random(lst) as
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lst[ 1 + prn(length(lst)) ] ;
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## Example:
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select histogram( r )
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from (select list_random( [1,2,3] ) as r from range(0,1000) _(n));
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