35 lines
667 B
SQL
35 lines
667 B
SQL
# name: test/optimizer/case_simplification.test
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# description: Test case simplification
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# group: [optimizer]
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statement ok
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CREATE TABLE test(X INTEGER);
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statement ok
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PRAGMA explain_output = OPTIMIZED_ONLY;
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query I nosort casenorm1
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EXPLAIN SELECT CASE WHEN 1=1 THEN X+1 ELSE X+2 END FROM test
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----
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query I nosort casenorm1
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EXPLAIN SELECT X+1 FROM test
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----
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query I nosort casenorm2
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EXPLAIN SELECT CASE WHEN 1=0 THEN X+1 ELSE X+2 END FROM test
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----
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query I nosort casenorm2
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EXPLAIN SELECT X+2 FROM test
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----
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query I nosort casenorm3
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EXPLAIN SELECT CASE WHEN NULL>3 THEN X+1 ELSE X+2 END FROM test
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----
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query I nosort casenorm3
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EXPLAIN SELECT X+2 FROM test
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----
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