Julian Hyde created CALCITE-1552:
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Summary: Add RAND function, returning DOUBLE values in the range
0..1
Key: CALCITE-1552
URL: https://issues.apache.org/jira/browse/CALCITE-1552
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
Assignee: Julian Hyde
Add {{RAND}} function, returning {{DOUBLE}} values in the range 0..1. It has
variants {{RAND()}} and {{RAND(seed)}}.
Also, add {{RAND_INTEGER(seed, bound)}}, support for a seed when generating
random integers.
To support seeds, the random function needs to have state. The random number
generator is initialized, using the seed, on first use, and subsequent calls
use the same random number generator. So, we are building on CALCITE-1548.
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