zstan commented on code in PR #13389:
URL: https://github.com/apache/ignite/pull/13389#discussion_r3636123875
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modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/metadata/IgniteMdRowCount.java:
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@@ -17,42 +17,62 @@
package org.apache.ignite.internal.processors.query.calcite.metadata;
+import java.util.BitSet;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Objects;
+import org.apache.calcite.plan.RelOptTable;
+import org.apache.calcite.rel.RelNode;
import org.apache.calcite.rel.core.Intersect;
import org.apache.calcite.rel.core.Join;
import org.apache.calcite.rel.core.JoinInfo;
import org.apache.calcite.rel.core.JoinRelType;
import org.apache.calcite.rel.core.Minus;
import org.apache.calcite.rel.core.Sort;
+import org.apache.calcite.rel.metadata.BuiltInMetadata;
import org.apache.calcite.rel.metadata.ReflectiveRelMetadataProvider;
+import org.apache.calcite.rel.metadata.RelColumnOrigin;
import org.apache.calcite.rel.metadata.RelMdRowCount;
import org.apache.calcite.rel.metadata.RelMdUtil;
import org.apache.calcite.rel.metadata.RelMetadataProvider;
import org.apache.calcite.rel.metadata.RelMetadataQuery;
import org.apache.calcite.rex.RexNode;
-import org.apache.calcite.util.BuiltInMethod;
import org.apache.calcite.util.ImmutableBitSet;
import org.apache.calcite.util.ImmutableIntList;
import org.apache.calcite.util.Util;
+import org.apache.calcite.util.mapping.IntPair;
import org.apache.ignite.internal.processors.query.calcite.rel.IgniteAggregate;
import org.apache.ignite.internal.processors.query.calcite.rel.IgniteLimit;
import
org.apache.ignite.internal.processors.query.calcite.rel.IgniteSortedIndexSpool;
import
org.apache.ignite.internal.processors.query.calcite.rel.IgniteTableModify;
+import org.apache.ignite.internal.processors.query.calcite.schema.IgniteTable;
+import org.apache.ignite.internal.util.GridLeanMap;
import org.apache.ignite.internal.util.typedef.F;
import org.jetbrains.annotations.Nullable;
import static org.apache.calcite.util.NumberUtil.multiply;
+
/** */
@SuppressWarnings("unused") // actually all methods are used by runtime
generated classes
public class IgniteMdRowCount extends RelMdRowCount {
+ /** */
+ private static final double NON_EQUI_COEFF = 0.7;
+
+ /** */
+ public static final double EQUI_COEFF = 0.8;
+
+ /** */
+ public static final double FK_WITH_PK_COEFF = 0.4;
Review Comment:
all these coeffs is kinda hacks which need to be removed wafter statistics
layer will properly work
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