110 lines
2.2 KiB
SQL
110 lines
2.2 KiB
SQL
# name: test/optimizer/like_optimizer.test
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# description: Test Like Optimization Rules
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# group: [optimizer]
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statement ok
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CREATE TABLE test(S VARCHAR);
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statement ok
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INSERT INTO test VALUES ('aaa');
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statement ok
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PRAGMA explain_output = OPTIMIZED_ONLY;
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# no special symbols optimization: aaa -> S=a
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query I nosort nosymbols
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EXPLAIN SELECT S LIKE 'aaa' FROM test
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----
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query I nosort nosymbols
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EXPLAIN SELECT S='aaa' FROM test
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----
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# prefix optimization: aaa% -> prefix(aaa)
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query I nosort prefix
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EXPLAIN SELECT S LIKE 'aaa%' FROM test
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----
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query I nosort prefix
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EXPLAIN SELECT prefix(S, 'aaa') FROM test
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----
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query I nosort prefix
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EXPLAIN SELECT S LIKE 'aaa%%%%' FROM test
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----
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# suffix optimization: %aaa -> suffix(aaa)
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query I nosort suffix
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EXPLAIN SELECT S LIKE '%aaa' FROM test
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----
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query I nosort suffix
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EXPLAIN SELECT suffix(S, 'aaa') FROM test
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----
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query I nosort suffix
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EXPLAIN SELECT S LIKE '%%%%aaa' FROM test
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----
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# contains optimization: %aaa% -> contains(aaa)
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query I nosort contains
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EXPLAIN SELECT S LIKE '%aaa%' FROM test
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----
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query I nosort contains
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EXPLAIN SELECT contains(S, 'aaa') FROM test
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----
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query I nosort contains
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EXPLAIN SELECT S LIKE '%%%%aaa%%' FROM test
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----
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# NOT LIKE
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# no special symbols optimization: aaa -> S<>a
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query I nosort notlikenosymbols
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EXPLAIN SELECT S NOT LIKE 'aaa' FROM test
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----
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query I nosort notlikenosymbols
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EXPLAIN SELECT S<>'aaa' FROM test
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----
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# prefix optimization: aaa% -> prefix(aaa)
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query I nosort notlikeprefix
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EXPLAIN SELECT S NOT LIKE 'aaa%' FROM test
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----
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query I nosort notlikeprefix
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EXPLAIN SELECT NOT(prefix(S, 'aaa')) FROM test
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----
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query I nosort notlikeprefix
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EXPLAIN SELECT S NOT LIKE 'aaa%%%%' FROM test
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----
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# suffix optimization: %aaa -> suffix(aaa)
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query I nosort notlikesuffix
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EXPLAIN SELECT S NOT LIKE '%aaa' FROM test
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----
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query I nosort notlikesuffix
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EXPLAIN SELECT NOT(suffix(S, 'aaa')) FROM test
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----
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query I nosort notlikesuffix
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EXPLAIN SELECT S NOT LIKE '%%%%aaa' FROM test
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----
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# contains optimization: %aaa% -> contains(aaa)
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query I nosort notlikecontains
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EXPLAIN SELECT S NOT LIKE '%aaa%' FROM test
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----
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query I nosort notlikecontains
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EXPLAIN SELECT NOT(contains(S, 'aaa')) FROM test
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----
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query I nosort notlikecontains
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EXPLAIN SELECT S NOT LIKE '%%%%aaa%%' FROM test
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----
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