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Wrap potentially conditional preaggregation with IF expression
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76 changes: 76 additions & 0 deletions
76
core/trino-main/src/test/java/io/trino/sql/query/TestPreAggregateCaseAggregations.java
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| /* | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package io.trino.sql.query; | ||
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| import org.junit.jupiter.api.AfterAll; | ||
| import org.junit.jupiter.api.Test; | ||
| import org.junit.jupiter.api.TestInstance; | ||
| import org.junit.jupiter.api.parallel.Execution; | ||
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|
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| import static org.assertj.core.api.Assertions.assertThat; | ||
| import static org.junit.jupiter.api.TestInstance.Lifecycle.PER_CLASS; | ||
| import static org.junit.jupiter.api.parallel.ExecutionMode.CONCURRENT; | ||
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|
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| @TestInstance(PER_CLASS) | ||
| @Execution(CONCURRENT) | ||
| public class TestPreAggregateCaseAggregations | ||
| { | ||
| private final QueryAssertions assertions = new QueryAssertions(); | ||
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| @AfterAll | ||
| public void teardown() | ||
| { | ||
| assertions.close(); | ||
| } | ||
|
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| @Test | ||
| public void testCastExpression() | ||
| { | ||
| assertThat(assertions.query("SELECT " + | ||
| "MAX(CASE WHEN c1 = 1 THEN CAST(c2 AS int) END) AS m1, " + | ||
| "MAX(CASE WHEN c1 = 2 THEN c2 END) AS m2, " + | ||
| "MAX(CASE WHEN c1 = 3 THEN c2 END) AS m3, " + | ||
| "MAX(CASE WHEN c1 = 4 THEN c2 END) AS m4 " + | ||
| "FROM (VALUES (1, '1'), (2, '2'), (3, '3'), (4, 'd')) t(c1, c2)")) | ||
| .matches("VALUES (1, '2', '3', 'd')"); | ||
|
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| assertThat(assertions.query("SELECT " + | ||
| "MAX(CAST(CASE WHEN c1 = 1 THEN C2 END AS INT)) AS m1, " + | ||
| "MAX(CASE WHEN c1 = 2 THEN c2 END) AS m2, " + | ||
| "MAX(CASE WHEN c1 = 3 THEN c2 END) AS m3, " + | ||
| "MAX(CASE WHEN c1 = 4 THEN c2 END) AS m4 " + | ||
| "FROM (VALUES (1, '1'), (2, '2'), (3, '3'), (4, 'd')) t(c1, c2)")) | ||
| .matches("VALUES (1, '2', '3', 'd')"); | ||
|
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| assertThat(assertions.query("SELECT " + | ||
| "CAST(MAX(CASE WHEN c1 = 1 THEN C2 END) AS INT) AS m1, " + | ||
| "MAX(CASE WHEN c1 = 2 THEN c2 END) AS m2, " + | ||
| "MAX(CASE WHEN c1 = 3 THEN c2 END) AS m3, " + | ||
| "MAX(CASE WHEN c1 = 4 THEN c2 END) AS m4 " + | ||
| "FROM (VALUES (1, '1'), (2, '2'), (3, '3'), (4, 'd')) t(c1, c2)")) | ||
| .matches("VALUES (1, '2', '3', 'd')"); | ||
| } | ||
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||
| @Test | ||
| public void testDivisionByZero() | ||
| { | ||
| assertThat(assertions.query("SELECT " + | ||
| "MAX(CASE WHEN c1 = '1' THEN 10 / c2 END) AS m1, " + | ||
| "MAX(CASE WHEN c1 = '2' THEN 10 / c2 END) AS m2, " + | ||
| "MAX(CASE WHEN c1 = '3' THEN c2 END) AS m3, " + | ||
| "MAX(CASE WHEN c1 = '4' THEN c2 END) AS m4 " + | ||
| "FROM (VALUES ('1', 1), ('2', 2), ('3', 3), ('4', 0)) t(c1, c2)")) | ||
| .matches("VALUES (10, 5, 3, 0)"); | ||
| } | ||
| } |