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Stopword Example
CREATE COLUMN TABLE stopwords
(
stopword_id VARCHAR(32) PRIMARY KEY,
list_id VARCHAR(32) NOT NULL,
language_code CHAR(2) NOT NULL,
term NVARCHAR(200) NOT NULL
);
CREATE COLUMN TABLE companies
(
id INTEGER PRIMARY KEY,
companyname SHORTTEXT(200) FUZZY SEARCH INDEX ON
);
INSERT INTO companies VALUES ('1', 'SAP AG');
INSERT INTO companies VALUES ('2', 'SAP Aktiengesellschaft');
INSERT INTO stopwords VALUES ('1', '01', 'de', 'AG');
INSERT INTO stopwords VALUES ('2', '01', 'de', 'Aktiengesellschaft');
INSERT INTO stopwords VALUES ('3', '01', 'de', 'blub');
Query 1: User input without stopwords. Stopwords in the database table only.
SELECT TO_DECIMAL(SCORE(), 3, 2) AS score, *
FROM companies
WHERE CONTAINS(companyname, 'sap', FUZZY(0.8, 'stopwordTable=stopwords,
stopwordListId=01, textSearch=compare'))
ORDER BY score DESC, ID;
SCORE ID COMPANYNAME
0.95 1 SAP AG
0.95 2 SAP Aktiengesellschaft
Query 2: User input with stopword. Other stopwords in the database table.
SELECT TO_DECIMAL(SCORE(), 3, 2) AS score, *
FROM companies
WHERE CONTAINS (companyname, 'sap blub', FUZZY(0.8,
'stopwordTable=stopwords, stopwordListId=01, textSearch=compare'))
ORDER BY score DESC, ID;
SCORE ID COMPANYNAME
0.95 1 SAP AG
0.95 2 SAP Aktiengesellschaft
Query 3: User input with stopword. One record with matching stopword, one record with differing stopword.
SELECT TO_DECIMAL(SCORE(), 3, 2) AS score, *
FROM companies
WHERE CONTAINS (companyname, 'sap aktiengesellschaft', FUZZY(0.8,
'stopwordTable=stopwords, stopwordListId=01, textSearch=compare'))
ORDER BY score DESC, ID;
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Enabling Search
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