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Commits on May 14, 2020

• [CALCITE-3979] Simplification might have removed CAST expression(s) incorrectly

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Commits on May 6, 2020

• [CALCITE-3887] Filter and Join conditions may not need to retain nullability during simplifications

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Commits on Aug 2, 2019

• [CALCITE-3215] Simplification may have not fully simplified IS NOT NULL expressions

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• [CALCITE-3192] Simplification may weaken OR conditions containing inequalities

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Commits on Mar 20, 2019

• [CALCITE-2929] Simplification of IS NULL checks are incorrectly assuming that CAST-s are possible

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Commits on Mar 5, 2019

• [CALCITE-2886] Simplification of AND expressions should push negations earlier

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Commits on Mar 4, 2019

• [CALCITE-2421] Generalize simplification of self-comparisions

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Commits on Mar 1, 2019

• [CALCITE-2338] Make Simplification API more conservative

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Commits on Feb 25, 2019

• [CALCITE-2839] Simplify comparisions against boolean literals

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Commits on Feb 23, 2019

• [CALCITE-2838] Simplification: Remove redundant IS TRUE/IS NOT FALSE checks

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Commits on Feb 22, 2019

• [CALCITE-2841] Simplification: push negation into Case expression

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Commits on Feb 21, 2019

• [CALCITE-2840] RexNode simplification logic should use more specific UnknownAs modes

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• [CALCITE-2852] RexNode simplification does not traverse unknown functions

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• [CALCITE-2842] Computing RexCall digest containing IN expressions leads to Exceptions

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Commits on Feb 20, 2019

• [CALCITE-2848] Simplifying a case statement's first branch should ignore its safety

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Commits on Feb 19, 2019

• [CALCITE-2850] Geode adapter: support boolean column as filter operand

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Commits on Jan 28, 2019

• [CALCITE-2802] Druid adapter: Usage of range conditions like "2010-01-01 < timestamp" leads to incorrect results

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Commits on Jan 23, 2019

• [CALCITE-2783] Expressions like ( s or s is unknown ) = true causes Exceptions

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Commits on Dec 13, 2018

• [CALCITE-2731] RexProgramBuilder makes unsafe simplifications to CASE expressions (Zoltan Haindrich)

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Commits on Dec 6, 2018

• [CALCITE-2726] ReduceExpressionRule oversimplifies filter conditions containing nulls

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Commits on Dec 3, 2018

• [CALCITE-2688] Improve diagnosability when validator cannot infer a return type (Zoltan Haindrich)

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• [CALCITE-2720] RelMetadataQuery.getTableOrigin throws IndexOutOfBoundsException if RelNode has no columns (Zoltan Haindrich)

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Commits on Dec 1, 2018

• [CALCITE-2632] Ensure that RexNode and its sub-classes implement hashCode and equals methods (Zoltan Haindrich)

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Commits on Nov 28, 2018

• [CALCITE-2695] Simplify casts which are only widening nullability (Zoltan Haindrich)

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• [CALCITE-2687] Is distinct from could lead to Exceptions in ReduceExpressionRule (Zoltan Haindrich)

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Commits on Nov 19, 2018

• [CALCITE-2675] Type validation error as ReduceExpressionRule fails to preserve type nullability (Zoltan Haindrich)

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Commits on Nov 8, 2018

• [CALCITE-2652] SqlNode to SQL conversion fails if the join condition references a BOOLEAN column (Zoltan Haindrich)

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Commits on Oct 17, 2018

• [CALCITE-1413] Enhance boolean case statement simplifications (Zoltan Haindrich)

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• [CALCITE-2615] When simplifying NOT-AND-OR, RexSimplify incorrectly applies predicates deduced for operands to the same operands (Zoltan Haindrich)

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Commits on Oct 9, 2018

• [CALCITE-2611] Linq4j code generation failure if one side of an OR contains unknown (Zoltan Haindrich)

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Commits on Sep 20, 2018

• Fix Windows tests broken by [CALCITE-2444] Handle IN expressions when converting SqlNode to SQL (Zoltan Haindrich)

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Commits on Sep 17, 2018

• [CALCITE-2444] Handle IN expressions when converting SqlNode to SQL (Zoltan Haindrich)

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Commits on Jul 10, 2018

• [CALCITE-2384] Performance issue in getPulledUpPredicates (Zoltan Haindrich)

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Commits on May 25, 2018

• [CALCITE-2247] Simplify AND and OR conditions using predicates (Zoltan Haindrich)

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Commits on Apr 6, 2018

• [CALCITE-2240] Extend rule to push predicates into CASE statement (Zoltan Haindrich)

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