• Describe Mysql full text search?

    Describe Mysql full text search?

     

    Silver Member Asked on August 7, 2018 in MYSQL.
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    MySQL version 5.6 or later allows you to define a full-text index for a column whose data type is CHAR, VARCHAR or TEXT in MyISAM or InnoDB table type. Notice that MySQL supported full-text index in the InnoDB tables since version 5.6.
    MySQL supports indexing and re-indexing data automatically for a full-text search enabled column.
    Add Full Text 

    ALTER TABLE table_name ADD FULLTEXT(column_name1, column_name2)
    

    RE: Describe Mysql full text search?


    Defining FULLTEXT index using CREATE INDEX statement
    CREATE FULLTEXT INDEX index_name ON table_name(idx_column_name)
    

    RE: Describe Mysql full text search?


    You can explicitly use the IN NATURAL LANGUAGE MODE search modifier in your query as follows:
     SELECT X, Y FROM swap_test WHERE MATCH(X,Y) AGAINST('de,rak' IN NATURAL LANGUAGE MODE); 
    

    RE: Describe Mysql full text search?

    RE: Describe Mysql full text search?


     MySQL Boolean full-text searches 
     
    SELECT X, Y FROM swap_test WHERE MATCH(X,Y) AGAINST('de -rak' IN BOOLEAN MODE);
     SELECT X, Y FROM swap_test WHERE MATCH(X,Y) AGAINST('de +rak' IN BOOLEAN MODE);
    

     

    RE: Describe Mysql full text search?

    RE: Describe Mysql full text search?

    RE: Describe Mysql full text search?

    RE: Describe Mysql full text search?

    MySQL Boolean full-text search operators
    The following table illustrates the full-text search Boolean operators and their meanings:

    Operator Description
    + Include, the word must be present.
    – Exclude, the word must not be present.
    > Include, and increase ranking value.
    < Include, and decrease the ranking value.
    () Group words into subexpressions (allowing them to be included, excluded, ranked, and so forth as a group).
    ~ Negate a word’s ranking value.
    * Wildcard at the end of the word.
    “” Defines a phrase (as opposed to a list of individual words, the entire phrase is matched for inclusion or exclusion).

     

    RE: Describe Mysql full text search?

    Silver Member Answered on August 7, 2018.
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