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Merge pull request #3909 from manticoresoftware/test/issue-3853-auto-force-bigrams
Add comprehensive tests for force_bigrams option (issue #3853)
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‎test/clt-tests/core/call-autocomplete-force-bigrams.rec‎

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––– comment –––
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Test for force_bigrams option in CALL AUTOCOMPLETE, CALL SUGGEST, and fuzzy search
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Issue: https://github.com/manticoresoftware/manticoresearch/issues/3853
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This test verifies that force_bigrams parameter works correctly in three contexts:
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1. CALL AUTOCOMPLETE (tests 1-9): autocomplete with bigram-based fuzzy matching
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2. CALL SUGGEST (tests 10-15): suggestions with bigram-based fuzzy matching
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3. SELECT with OPTION fuzzy=1 (tests 16-21): regular search with fuzzy option
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––– block: ../base/start-searchd-with-buddy –––
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––– input –––
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mysql -P9306 -h0 -e "drop table if exists t"
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––– output –––
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––– input –––
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mysql -P9306 -h0 -e "create table t(f text) min_infix_len='2'"
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––– output –––
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––– input –––
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mysql -P9306 -h0 -e "insert into t values(1,'iphone george planet letter')"
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––– output –––
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––– comment –––
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Test 1: force_bigrams=1 finds transposition errors
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––– input –––
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mysql -P9306 -h0 -e "call autocomplete('ipohne', 't', 1 as force_bigrams)\G"
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––– output –––
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*************************** 1. row ***************************
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query: iphone
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––– comment –––
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Test 2: force_bigrams=0 does NOT find transpositions in long words
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––– input –––
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mysql -P9306 -h0 -e "call autocomplete('ipohne', 't', 0 as force_bigrams)\G"
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––– output –––
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––– comment –––
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Test 3: Transposition with force_bigrams=1
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––– input –––
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mysql -P9306 -h0 -e "call autocomplete('geroge', 't', 1 as force_bigrams)\G"
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––– output –––
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*************************** 1. row ***************************
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query: george
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––– comment –––
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Test 4: Same word with force_bigrams=0 - does NOT find transposition
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––– input –––
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mysql -P9306 -h0 -e "call autocomplete('geroge', 't', 0 as force_bigrams)\G"
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––– output –––
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––– comment –––
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Test 5: 6-char word "planet" (boundary case), force_bigrams=0, expect: found
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Note: "lanet" uses bigrams, "planet" uses trigrams, but fuzzy matching still works (edit distance=1)
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––– input –––
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mysql -P9306 -h0 -e "call autocomplete('lanet', 't', 0 as force_bigrams)\G"
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––– output –––
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*************************** 1. row ***************************
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query: planet
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––– comment –––
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Test 6: Same word with force_bigrams=1, expect: found (same result as Test 5)
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––– input –––
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mysql -P9306 -h0 -e "call autocomplete('lanet', 't', 1 as force_bigrams)\G"
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––– output –––
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*************************** 1. row ***************************
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query: planet
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––– comment –––
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Test 7: Append option with force_bigrams
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––– input –––
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mysql -P9306 -h0 -e "call autocomplete('geor', 't', 1 as append, 1 as force_bigrams)\G"
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––– output –––
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*************************** 1. row ***************************
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query: george
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––– comment –––
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Test 8: Prepend option with force_bigrams
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––– input –––
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mysql -P9306 -h0 -e "call autocomplete('eorge', 't', 1 as prepend, 1 as force_bigrams)\G"
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––– output –––
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*************************** 1. row ***************************
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query: george
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––– comment –––
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Test 9: Multiple options with force_bigrams
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––– input –––
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mysql -P9306 -h0 -e "call autocomplete('geor', 't', 1 as fuzziness, 1 as append, 1 as prepend, 1 as force_bigrams)\G"
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––– output –––
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*************************** 1. row ***************************
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query: george
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––– comment –––
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Test 10: CALL SUGGEST with force_bigrams=1, transposition in 6-char word
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––– input –––
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mysql -P9306 -h0 -e "call suggest('ipohne', 't', 1 as force_bigrams)\G"
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––– output –––
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*************************** 1. row ***************************
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suggest: iphone
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distance: 2
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docs: 1
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*************************** 2. row ***************************
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suggest: planet
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distance: 4
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docs: 1
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––– comment –––
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Test 11: CALL SUGGEST with force_bigrams=0, same word, expect: NOT found
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––– input –––
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mysql -P9306 -h0 -e "call suggest('ipohne', 't', 0 as force_bigrams)\G"
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––– output –––
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––– comment –––
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Test 12: CALL SUGGEST with force_bigrams=1, transposition in "george"
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––– input –––
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mysql -P9306 -h0 -e "call suggest('geroge', 't', 1 as force_bigrams)\G"
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––– output –––
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*************************** 1. row ***************************
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suggest: george
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distance: 2
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docs: 1
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––– comment –––
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Test 13: CALL SUGGEST with force_bigrams=0, same word, expect: NOT found
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––– input –––
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mysql -P9306 -h0 -e "call suggest('geroge', 't', 0 as force_bigrams)\G"
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––– output –––
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––– comment –––
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Test 14: CALL SUGGEST with force_bigrams=0, "planet" boundary case, expect: found
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––– input –––
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mysql -P9306 -h0 -e "call suggest('lanet', 't', 0 as force_bigrams)\G"
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––– output –––
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*************************** 1. row ***************************
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suggest: planet
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distance: 1
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docs: 1
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*************************** 2. row ***************************
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suggest: letter
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distance: 4
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docs: 1
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––– comment –––
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Test 15: CALL SUGGEST with force_bigrams=1, same word, expect: found (same result)
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––– input –––
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mysql -P9306 -h0 -e "call suggest('lanet', 't', 1 as force_bigrams)\G"
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––– output –––
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*************************** 1. row ***************************
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suggest: planet
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distance: 1
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docs: 1
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*************************** 2. row ***************************
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suggest: letter
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distance: 4
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docs: 1
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––– comment –––
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Test 16: SELECT with force_bigrams=1, transposition in 6-char word
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––– input –––
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mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('ipohne') OPTION fuzzy=1, force_bigrams=1"
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––– output –––
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+------+-----------------------------+
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| id | f |
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+------+-----------------------------+
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| 1 | iphone george planet letter |
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+------+-----------------------------+
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––– comment –––
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Test 17: SELECT with force_bigrams=0, same word, expect: NOT found
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––– input –––
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mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('ipohne') OPTION fuzzy=1, force_bigrams=0"
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––– output –––
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––– comment –––
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Test 18: SELECT with force_bigrams=1, transposition in "george"
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––– input –––
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mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('geroge') OPTION fuzzy=1, force_bigrams=1"
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––– output –––
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+------+-----------------------------+
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| id | f |
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+------+-----------------------------+
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| 1 | iphone george planet letter |
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+------+-----------------------------+
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––– comment –––
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Test 19: SELECT with force_bigrams=0, same word, expect: NOT found
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––– input –––
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mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('geroge') OPTION fuzzy=1, force_bigrams=0"
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––– output –––
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––– comment –––
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Test 20: SELECT with force_bigrams=0, "planet" boundary case, expect: found
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––– input –––
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mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('lanet') OPTION fuzzy=1, force_bigrams=0"
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––– output –––
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+------+-----------------------------+
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| id | f |
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+------+-----------------------------+
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| 1 | iphone george planet letter |
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+------+-----------------------------+
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––– comment –––
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Test 21: SELECT with force_bigrams=1, same word, expect: found (same result)
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––– input –––
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mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('lanet') OPTION fuzzy=1, force_bigrams=1"
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––– output –––
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+------+-----------------------------+
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| id | f |
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+------+-----------------------------+
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| 1 | iphone george planet letter |
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+------+-----------------------------+
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––– input –––
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mysql -P9306 -h0 -e "drop table t"
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––– output –––

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