[ https://issues.apache.org/jira/browse/CALCITE-5971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
LakeShen updated CALCITE-5971: ------------------------------ Summary: Add the RelRule to rewrite the bernoulli sample as Filter (was: Add the RelRule to rewrite the Sample as Filter) > Add the RelRule to rewrite the bernoulli sample as Filter > ---------------------------------------------------------- > > Key: CALCITE-5971 > URL: https://issues.apache.org/jira/browse/CALCITE-5971 > Project: Calcite > Issue Type: New Feature > Components: core > Reporter: LakeShen > Assignee: LakeShen > Priority: Major > > For the following SQL: > {code:java} > select deptno from "scott".dept tablesample bernoulli(50); {code} > We could rewrite it to: > {code:java} > select deptno from "scott".dept where rand() < 0.5; {code} > The sql : > {code:java} > select deptno from "scott".dept tablesample bernoulli(50) REPEATABLE(10); > {code} > We could rewrite it to: > {code:java} > select deptno from "scott".dept where rand(10) < 0.5; {code} > This rule only rewrite the tablesample bernoulli. -- This message was sent by Atlassian Jira (v8.20.10#820010)