mirror of https://github.com/apache/druid.git
Updating plans when using joins with unnest on the left (#15075)
* Updating plans when using joins with unnest on the left * Correcting segment map function for hashJoin * The changes done here are not reflected into MSQ yet so these tests might not run in MSQ * native tests * Self joins with unnest data source * Making this pass * Addressing comments by adding explanation and new test
This commit is contained in:
Soumyava
GitHub
parent
f9439970c9
commit
57ab8e13dc
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@ -476,10 +476,25 @@ public class JoinDataSource implements DataSource
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.orElse(null)
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)
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);
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final Function<SegmentReference, SegmentReference> baseMapFn;
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// A join data source is not concrete
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// And isConcrete() of an unnest datasource delegates to its base
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// Hence, in the case of a Join -> Unnest -> Join
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// if we just use isConcrete on the left
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// the segment map function for the unnest would never get called
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// This calls us to delegate to the segmentMapFunction of the left
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// only when it is not a JoinDataSource
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if (left instanceof JoinDataSource) {
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baseMapFn = Function.identity();
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} else {
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baseMapFn = left.createSegmentMapFunction(
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query,
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cpuTimeAccumulator
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);
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}
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return baseSegment ->
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new HashJoinSegment(
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baseSegment,
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baseMapFn.apply(baseSegment),
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baseFilterToUse,
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GuavaUtils.firstNonNull(clausesToUse, ImmutableList.of()),
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joinFilterPreAnalysis
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@ -501,7 +516,21 @@ public class JoinDataSource implements DataSource
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DimFilter currentDimFilter = null;
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final List<PreJoinableClause> preJoinableClauses = new ArrayList<>();
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while (current instanceof JoinDataSource) {
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// There can be queries like
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// Join of Unnest of Join of Unnest of Filter
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// so these checks are needed to be ORed
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// to get the base
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// This method is called to get the analysis for the join data source
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// Since the analysis of an UnnestDS or FilteredDS always delegates to its base
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// To obtain the base data source underneath a Join
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// we also iterate through the base of the FilterDS and UnnestDS in its path
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// the base of which can be a concrete data source
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// This also means that an addition of a new datasource
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// Will need an instanceof check here
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// A future work should look into if the flattenJoin
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// can be refactored to omit these instanceof checks
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while (current instanceof JoinDataSource || current instanceof UnnestDataSource || current instanceof FilteredDataSource) {
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if (current instanceof JoinDataSource) {
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final JoinDataSource joinDataSource = (JoinDataSource) current;
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current = joinDataSource.getLeft();
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currentDimFilter = validateLeftFilter(current, joinDataSource.getLeftFilter());
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@ -513,6 +542,13 @@ public class JoinDataSource implements DataSource
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joinDataSource.getConditionAnalysis()
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)
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);
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} else if (current instanceof UnnestDataSource) {
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final UnnestDataSource unnestDataSource = (UnnestDataSource) current;
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current = unnestDataSource.getBase();
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} else {
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final FilteredDataSource filteredDataSource = (FilteredDataSource) current;
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current = filteredDataSource.getBase();
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}
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}
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// Join clauses were added in the order we saw them while traversing down, but we need to apply them in the
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@ -29,11 +29,14 @@ import org.apache.druid.java.util.common.StringUtils;
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import org.apache.druid.math.expr.ExprMacroTable;
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import org.apache.druid.query.filter.InDimFilter;
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import org.apache.druid.query.filter.TrueDimFilter;
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import org.apache.druid.query.planning.DataSourceAnalysis;
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import org.apache.druid.segment.TestHelper;
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import org.apache.druid.segment.column.ColumnType;
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import org.apache.druid.segment.join.JoinConditionAnalysis;
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import org.apache.druid.segment.join.JoinType;
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import org.apache.druid.segment.join.JoinableFactoryWrapper;
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import org.apache.druid.segment.join.NoopJoinableFactory;
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import org.apache.druid.segment.virtual.ExpressionVirtualColumn;
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import org.easymock.Mock;
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import org.junit.Assert;
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import org.junit.Rule;
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@ -433,6 +436,51 @@ public class JoinDataSourceTest
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Assert.assertFalse(Arrays.equals(cacheKey1, cacheKey2));
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}
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@Test
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public void testGetAnalysisWithUnnestDS()
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{
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JoinDataSource dataSource = JoinDataSource.create(
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UnnestDataSource.create(
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new TableDataSource("table1"),
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new ExpressionVirtualColumn("j0.unnest", "\"dim3\"", ColumnType.STRING, ExprMacroTable.nil()),
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null
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),
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new TableDataSource("table2"),
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"j.",
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"x == \"j.x\"",
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JoinType.LEFT,
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null,
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ExprMacroTable.nil(),
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null
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);
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DataSourceAnalysis analysis = dataSource.getAnalysis();
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Assert.assertEquals("table1", analysis.getBaseDataSource().getTableNames().iterator().next());
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}
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@Test
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public void testGetAnalysisWithFilteredDS()
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{
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JoinDataSource dataSource = JoinDataSource.create(
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UnnestDataSource.create(
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FilteredDataSource.create(
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new TableDataSource("table1"),
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TrueDimFilter.instance()
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),
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new ExpressionVirtualColumn("j0.unnest", "\"dim3\"", ColumnType.STRING, ExprMacroTable.nil()),
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null
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),
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new TableDataSource("table2"),
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"j.",
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"x == \"j.x\"",
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JoinType.LEFT,
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null,
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ExprMacroTable.nil(),
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null
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);
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DataSourceAnalysis analysis = dataSource.getAnalysis();
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Assert.assertEquals("table1", analysis.getBaseDataSource().getTableNames().iterator().next());
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}
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@Test
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public void test_computeJoinDataSourceCacheKey_keyChangesWithBaseFilter()
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{
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@ -66,7 +66,7 @@ public class DruidRels
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*/
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public static boolean isScanOrProject(final DruidRel<?> druidRel, final boolean canBeJoinOrUnion)
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{
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if (druidRel instanceof DruidQueryRel || (canBeJoinOrUnion && (druidRel instanceof DruidJoinQueryRel
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if (druidRel instanceof DruidQueryRel || (canBeJoinOrUnion && (druidRel instanceof DruidJoinQueryRel || druidRel instanceof DruidCorrelateUnnestRel
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|| druidRel instanceof DruidUnionDataSourceRel))) {
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final PartialDruidQuery partialQuery = druidRel.getPartialDruidQuery();
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final PartialDruidQuery.Stage stage = partialQuery.stage();
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@ -38,6 +38,7 @@ import org.apache.druid.java.util.common.guava.Sequence;
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import org.apache.druid.math.expr.ExprMacroTable;
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import org.apache.druid.query.DataSource;
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import org.apache.druid.query.Druids;
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import org.apache.druid.query.FilteredDataSource;
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import org.apache.druid.query.GlobalTableDataSource;
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import org.apache.druid.query.InlineDataSource;
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import org.apache.druid.query.JoinDataSource;
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@ -49,6 +50,7 @@ import org.apache.druid.query.QueryDataSource;
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import org.apache.druid.query.QueryException;
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import org.apache.druid.query.TableDataSource;
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import org.apache.druid.query.UnionDataSource;
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import org.apache.druid.query.UnnestDataSource;
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import org.apache.druid.query.aggregation.CountAggregatorFactory;
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import org.apache.druid.query.aggregation.DoubleSumAggregatorFactory;
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import org.apache.druid.query.aggregation.FilteredAggregatorFactory;
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@ -64,6 +66,7 @@ import org.apache.druid.query.aggregation.post.FieldAccessPostAggregator;
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import org.apache.druid.query.dimension.DefaultDimensionSpec;
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import org.apache.druid.query.dimension.ExtractionDimensionSpec;
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import org.apache.druid.query.extraction.SubstringDimExtractionFn;
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import org.apache.druid.query.filter.InDimFilter;
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import org.apache.druid.query.filter.LikeDimFilter;
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import org.apache.druid.query.groupby.GroupByQuery;
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import org.apache.druid.query.groupby.ResultRow;
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@ -5914,4 +5917,356 @@ public class CalciteJoinQueryTest extends BaseCalciteQueryTest
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)
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);
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}
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@Test
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public void testJoinsWithUnnestOnLeft()
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{
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// Segment map function of MSQ needs some work
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// To handle these nested cases
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// Remove this when that's handled
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msqIncompatible();
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Map<String, Object> context = new HashMap<>(QUERY_CONTEXT_DEFAULT);
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testQuery(
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"with t1 as (\n"
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+ "select * from foo, unnest(MV_TO_ARRAY(\"dim3\")) as u(d3)\n"
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+ ")\n"
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+ "select t1.dim3, t1.d3, t2.dim2 from t1 JOIN numfoo as t2\n"
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+ "ON t1.d3 = t2.\"dim2\"",
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context,
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ImmutableList.of(
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newScanQueryBuilder()
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.dataSource(
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join(
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UnnestDataSource.create(
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new TableDataSource(CalciteTests.DATASOURCE1),
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expressionVirtualColumn("j0.unnest", "\"dim3\"", ColumnType.STRING),
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null
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),
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new QueryDataSource(
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newScanQueryBuilder()
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.intervals(querySegmentSpec(Filtration.eternity()))
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.dataSource(CalciteTests.DATASOURCE3)
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.columns("dim2")
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.legacy(false)
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.context(context)
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.build()
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),
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"_j0.",
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"(\"j0.unnest\" == \"_j0.dim2\")",
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JoinType.INNER
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)
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)
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.intervals(querySegmentSpec(Filtration.eternity()))
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.columns("_j0.dim2", "dim3", "j0.unnest")
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.context(context)
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.build()
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),
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useDefault ?
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ImmutableList.of(
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
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new Object[]{"[\"a\",\"b\"]", "a", "a"}
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) : ImmutableList.of(
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
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new Object[]{"", "", ""}
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)
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);
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}
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@Test
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public void testJoinsWithUnnestOverFilteredDSOnLeft()
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{
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// Segment map function of MSQ needs some work
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// To handle these nested cases
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// Remove this when that's handled
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msqIncompatible();
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Map<String, Object> context = new HashMap<>(QUERY_CONTEXT_DEFAULT);
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testQuery(
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"with t1 as (\n"
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+ "select * from foo, unnest(MV_TO_ARRAY(\"dim3\")) as u(d3) where dim2='a'\n"
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+ ")\n"
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+ "select t1.dim3, t1.d3, t2.dim2 from t1 JOIN numfoo as t2\n"
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+ "ON t1.d3 = t2.\"dim2\"",
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context,
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ImmutableList.of(
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newScanQueryBuilder()
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.dataSource(
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join(
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UnnestDataSource.create(
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FilteredDataSource.create(
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new TableDataSource(CalciteTests.DATASOURCE1),
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equality("dim2", "a", ColumnType.STRING)
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),
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expressionVirtualColumn("j0.unnest", "\"dim3\"", ColumnType.STRING),
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null
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),
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new QueryDataSource(
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newScanQueryBuilder()
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.intervals(querySegmentSpec(Filtration.eternity()))
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.dataSource(CalciteTests.DATASOURCE3)
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.columns("dim2")
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.legacy(false)
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.context(context)
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.build()
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),
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"_j0.",
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"(\"j0.unnest\" == \"_j0.dim2\")",
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JoinType.INNER
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)
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)
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.intervals(querySegmentSpec(Filtration.eternity()))
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.columns("_j0.dim2", "dim3", "j0.unnest")
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.context(context)
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.build()
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),
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useDefault ?
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ImmutableList.of(
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
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new Object[]{"[\"a\",\"b\"]", "a", "a"}
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) : ImmutableList.of(
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
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new Object[]{"", "", ""}
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)
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);
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}
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@Test
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public void testJoinsWithUnnestOverJoin()
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{
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// Segment map function of MSQ needs some work
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// To handle these nested cases
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// Remove this when that's handled
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msqIncompatible();
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Map<String, Object> context = new HashMap<>(QUERY_CONTEXT_DEFAULT);
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testQuery(
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"with t1 as (\n"
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+ "select * from (SELECT * from foo JOIN (select dim2 as t from foo where dim2 IN ('a','b','ab','abc')) ON dim2=t), "
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+ " unnest(MV_TO_ARRAY(\"dim3\")) as u(d3) \n"
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+ ")\n"
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+ "select t1.dim3, t1.d3, t2.dim2 from t1 JOIN numfoo as t2\n"
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+ "ON t1.d3 = t2.\"dim2\"",
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context,
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ImmutableList.of(
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newScanQueryBuilder()
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.dataSource(
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join(
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UnnestDataSource.create(
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join(
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new TableDataSource(CalciteTests.DATASOURCE1),
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new QueryDataSource(
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newScanQueryBuilder()
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.intervals(querySegmentSpec(Filtration.eternity()))
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.dataSource(CalciteTests.DATASOURCE1)
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.filters(new InDimFilter("dim2", ImmutableList.of("a", "b", "ab", "abc"), null))
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.legacy(false)
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.context(context)
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.columns("dim2")
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.build()
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),
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"j0.",
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"(\"dim2\" == \"j0.dim2\")",
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JoinType.INNER
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),
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expressionVirtualColumn("_j0.unnest", "\"dim3\"", ColumnType.STRING),
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null
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),
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new QueryDataSource(
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newScanQueryBuilder()
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.intervals(querySegmentSpec(Filtration.eternity()))
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.dataSource(CalciteTests.DATASOURCE3)
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.columns("dim2")
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.legacy(false)
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.context(context)
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.build()
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),
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"__j0.",
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"(\"_j0.unnest\" == \"__j0.dim2\")",
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JoinType.INNER
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)
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)
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.intervals(querySegmentSpec(Filtration.eternity()))
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.columns("__j0.dim2", "_j0.unnest", "dim3")
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.context(context)
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.build()
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),
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useDefault ?
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ImmutableList.of(
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"}
|
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) : ImmutableList.of(
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
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new Object[]{"", "", ""},
|
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new Object[]{"", "", ""},
|
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new Object[]{"", "", ""},
|
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new Object[]{"", "", ""}
|
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)
|
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);
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}
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|
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@Test
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public void testSelfJoinsWithUnnestOnLeftAndRight()
|
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{
|
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// Segment map function of MSQ needs some work
|
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// To handle these nested cases
|
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// Remove this when that's handled
|
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msqIncompatible();
|
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Map<String, Object> context = new HashMap<>(QUERY_CONTEXT_DEFAULT);
|
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testQuery(
|
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"with t1 as (\n"
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+ "select * from foo, unnest(MV_TO_ARRAY(\"dim3\")) as u(d3)\n"
|
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+ ")\n"
|
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+ "select t1.dim3, t1.d3, t2.dim2 from t1 JOIN t1 as t2\n"
|
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+ "ON t1.d3 = t2.d3",
|
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context,
|
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ImmutableList.of(
|
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newScanQueryBuilder()
|
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.dataSource(
|
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join(
|
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UnnestDataSource.create(
|
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new TableDataSource(CalciteTests.DATASOURCE1),
|
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expressionVirtualColumn("j0.unnest", "\"dim3\"", ColumnType.STRING),
|
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null
|
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),
|
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new QueryDataSource(
|
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newScanQueryBuilder()
|
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.intervals(querySegmentSpec(Filtration.eternity()))
|
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.dataSource(UnnestDataSource.create(
|
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new TableDataSource(CalciteTests.DATASOURCE1),
|
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expressionVirtualColumn("j0.unnest", "\"dim3\"", ColumnType.STRING),
|
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null
|
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))
|
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.columns("dim2", "j0.unnest")
|
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.legacy(false)
|
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.context(context)
|
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.build()
|
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),
|
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"_j0.",
|
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"(\"j0.unnest\" == \"_j0.j0.unnest\")",
|
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JoinType.INNER
|
||||
)
|
||||
)
|
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.intervals(querySegmentSpec(Filtration.eternity()))
|
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.columns("_j0.dim2", "dim3", "j0.unnest")
|
||||
.context(context)
|
||||
.build()
|
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),
|
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useDefault ?
|
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ImmutableList.of(
|
||||
new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
||||
new Object[]{"[\"a\",\"b\"]", "b", "a"},
|
||||
new Object[]{"[\"a\",\"b\"]", "b", ""},
|
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new Object[]{"[\"b\",\"c\"]", "b", "a"},
|
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new Object[]{"[\"b\",\"c\"]", "b", ""},
|
||||
new Object[]{"[\"b\",\"c\"]", "c", ""},
|
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new Object[]{"d", "d", ""}
|
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) : ImmutableList.of(
|
||||
new Object[]{"[\"a\",\"b\"]", "a", "a"},
|
||||
new Object[]{"[\"a\",\"b\"]", "b", "a"},
|
||||
new Object[]{"[\"a\",\"b\"]", "b", null},
|
||||
new Object[]{"[\"b\",\"c\"]", "b", "a"},
|
||||
new Object[]{"[\"b\",\"c\"]", "b", null},
|
||||
new Object[]{"[\"b\",\"c\"]", "c", null},
|
||||
new Object[]{"d", "d", ""},
|
||||
new Object[]{"", "", "a"}
|
||||
)
|
||||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testJoinsOverUnnestOverFilterDSOverJoin()
|
||||
{
|
||||
// Segment map function of MSQ needs some work
|
||||
// To handle these nested cases
|
||||
// Remove this when that's handled
|
||||
msqIncompatible();
|
||||
Map<String, Object> context = new HashMap<>(QUERY_CONTEXT_DEFAULT);
|
||||
testQuery(
|
||||
"with t1 as (\n"
|
||||
+ "select * from (SELECT * from foo JOIN (select dim2 as t from foo where dim2 IN ('a','b','ab','abc')) ON dim2=t),\n"
|
||||
+ "unnest(MV_TO_ARRAY(\"dim3\")) as u(d3) where m1 IN (1,4) and d3='a'\n"
|
||||
+ ")\n"
|
||||
+ "select t1.dim3, t1.d3, t2.dim2, t1.m1 from t1 JOIN numfoo as t2\n"
|
||||
+ "ON t1.d3 = t2.\"dim2\"",
|
||||
context,
|
||||
ImmutableList.of(
|
||||
newScanQueryBuilder()
|
||||
.dataSource(
|
||||
join(
|
||||
UnnestDataSource.create(
|
||||
FilteredDataSource.create(
|
||||
join(
|
||||
new TableDataSource(CalciteTests.DATASOURCE1),
|
||||
new QueryDataSource(
|
||||
newScanQueryBuilder()
|
||||
.intervals(querySegmentSpec(Filtration.eternity()))
|
||||
.dataSource(CalciteTests.DATASOURCE1)
|
||||
.columns("dim2")
|
||||
.filters(new InDimFilter(
|
||||
"dim2",
|
||||
ImmutableList.of("a", "ab", "abc", "b"),
|
||||
null
|
||||
))
|
||||
.legacy(false)
|
||||
.context(context)
|
||||
.build()
|
||||
),
|
||||
"j0.",
|
||||
"(\"dim2\" == \"j0.dim2\")",
|
||||
JoinType.INNER
|
||||
),
|
||||
useDefault ?
|
||||
new InDimFilter("m1", ImmutableList.of("1", "4"), null) :
|
||||
or(
|
||||
equality("m1", 1.0, ColumnType.FLOAT),
|
||||
equality("m1", 4.0, ColumnType.FLOAT)
|
||||
)
|
||||
),
|
||||
expressionVirtualColumn("_j0.unnest", "\"dim3\"", ColumnType.STRING),
|
||||
equality("_j0.unnest", "a", ColumnType.STRING)
|
||||
),
|
||||
new QueryDataSource(
|
||||
newScanQueryBuilder()
|
||||
.intervals(querySegmentSpec(Filtration.eternity()))
|
||||
.dataSource(CalciteTests.DATASOURCE3)
|
||||
.columns("dim2")
|
||||
.legacy(false)
|
||||
.context(context)
|
||||
.build()
|
||||
),
|
||||
"__j0.",
|
||||
"(\"_j0.unnest\" == \"__j0.dim2\")",
|
||||
JoinType.INNER
|
||||
)
|
||||
)
|
||||
.intervals(querySegmentSpec(Filtration.eternity()))
|
||||
.columns("__j0.dim2", "_j0.unnest", "dim3", "m1")
|
||||
.context(context)
|
||||
.build()
|
||||
),
|
||||
ImmutableList.of(
|
||||
new Object[]{"[\"a\",\"b\"]", "a", "a", 1.0f},
|
||||
new Object[]{"[\"a\",\"b\"]", "a", "a", 1.0f},
|
||||
new Object[]{"[\"a\",\"b\"]", "a", "a", 1.0f},
|
||||
new Object[]{"[\"a\",\"b\"]", "a", "a", 1.0f},
|
||||
new Object[]{"[\"a\",\"b\"]", "a", "a", 1.0f},
|
||||
new Object[]{"[\"a\",\"b\"]", "a", "a", 1.0f},
|
||||
new Object[]{"[\"a\",\"b\"]", "a", "a", 1.0f},
|
||||
new Object[]{"[\"a\",\"b\"]", "a", "a", 1.0f}
|
||||
)
|
||||
);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue