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https://issues.apache.org/jira/browse/IGNITE-23673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17899806#comment-17899806
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Ignite TC Bot commented on IGNITE-23673:
----------------------------------------
{panel:title=Branch: [pull/11659/head] Base: [master] : No blockers
found!|borderStyle=dashed|borderColor=#ccc|titleBGColor=#D6F7C1}{panel}
{panel:title=Branch: [pull/11659/head] Base: [master] : New Tests
(2)|borderStyle=dashed|borderColor=#ccc|titleBGColor=#D6F7C1}
{color:#00008b}Calcite SQL{color} [[tests
2|https://ci2.ignite.apache.org/viewLog.html?buildId=8165831]]
* {color:#013220}IgniteCalciteTestSuite: FunctionsTest.testDecode -
PASSED{color}
* {color:#013220}IgniteCalciteTestSuite: FunctionsTest.testNvl - PASSED{color}
{panel}
[TeamCity *--> Run :: All*
Results|https://ci2.ignite.apache.org/viewLog.html?buildId=8164653&buildTypeId=IgniteTests24Java8_RunAll]
> Calcite engine. Functions NVL and DECODE fail when used with parameters of
> different data types
> ------------------------------------------------------------------------------------------------
>
> Key: IGNITE-23673
> URL: https://issues.apache.org/jira/browse/IGNITE-23673
> Project: Ignite
> Issue Type: Bug
> Reporter: Aleksey Plekhanov
> Assignee: Aleksey Plekhanov
> Priority: Major
> Labels: calcite, ise
> Time Spent: 20m
> Remaining Estimate: 0h
>
> For example, query:
> {code:java}
> select nvl('1', 2)
> {code}
> Fails with:
> {noformat}
> Cannot infer return type for NVL; operand types: [VARCHAR, INTEGER]
> {noformat}
> Query:
> {code:java}
> select decode('1', 1, '1', '2')
> {code}
> Fails with:
> {noformat}
> org.apache.ignite.IgniteCheckedException: while resolving method 'eq[class
> java.lang.String, int]' in class class org.apache.calcite.runtime.SqlFunctions
> {noformat}
> These functions are rewritten to the {{CASE-WHEN}} operator after the
> validation, but fail on validation. But if we use {{CASE-WHEN}} in the
> original query, it works well, types are casted correctly and validation
> passed:
> {code:java}
> select case when '1' is not null then '1' else 2 end
> select case when '1' = 1 then '1' else '2' end
> {code}
>
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