# name: test/optimizer/comparison_simplification.test
# description: Comparison simplification test
# group: [optimizer]

statement ok
CREATE TABLE test(X INTEGER);

statement ok
PRAGMA explain_output = OPTIMIZED_ONLY;

# comparisons with NULL result in NULL
query I nosort compnorm1
EXPLAIN SELECT NULL FROM test
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query I nosort compnorm1
EXPLAIN SELECT X=NULL FROM test
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query I nosort compnorm1
EXPLAIN SELECT X>NULL FROM test
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query I nosort compnorm1
EXPLAIN SELECT NULL>X FROM test
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# in the WHERE clause this gets pruned entirely
query I nosort compnorm2
EXPLAIN SELECT * FROM test WHERE 1=0
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query I nosort compnorm2
EXPLAIN SELECT * FROM test WHERE X=NULL
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# we shift casts from columns to columns when possible
query I nosort constantshift
EXPLAIN SELECT X=1::BIGINT FROM test
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query I nosort constantshift
EXPLAIN SELECT X::BIGINT=1::INTEGER FROM test
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query I nosort constantshift
EXPLAIN SELECT X='1' FROM test
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query I nosort constantshift
EXPLAIN SELECT X::BIGINT='1' FROM test
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