SAP HANA Developer Guide - Get a Free Blog

col1 NVARCHAR(20) FUZZY SEARCH MODE 'housenumber'
);
To enable or disable the house number search mode at a later point in time, you use the ALTER TABLE statement.
The fuzzy search mode is not changed if the FUZZY SEARCH MODE clause is omitted.
-- enable housenumber search
ALTER TABLE tab ALTER
(
col1 VARCHAR(20) FUZZY SEARCH MODE 'housenumber'
);
-- disable housenumber search
ALTER TABLE tab ALTER
(
col1 VARCHAR(20) FUZZY SEARCH MODE NULL
);
-- do not change the status of the search mode
ALTER TABLE tab ALTER
(
col1 VARCHAR(20)
);
You can query the state of the fuzzy search mode by using the system view TABLE_COLUMNS.
SELECT column_name, data_type_name, fuzzy_search_mode
FROM table_columns
WHERE table_name = 'TAB';
Example
Note: You cannot use a fuzzy search index in combination with the house number search mode.
The following example creates a table that contains a single house number column only and executes some
searches on this column.
CREATE COLUMN TABLE housenumbers
(
housenumber NVARCHAR(50) FUZZY SEARCH MODE 'housenumber'
);
INSERT INTO housenumbers VALUES ('5');
INSERT INTO housenumbers VALUES ('5a');
INSERT INTO housenumbers VALUES ('5 a');
INSERT INTO housenumbers VALUES ('Nr. 5');
INSERT INTO housenumbers VALUES ('8-12');
INSERT INTO housenumbers VALUES ('8 - 12');
INSERT INTO housenumbers VALUES ('8 - 12a');
INSERT INTO housenumbers VALUES ('Nr. 8-12');
INSERT INTO housenumbers VALUES ('8 - 12/5');
INSERT INTO housenumbers VALUES ('8');
INSERT INTO housenumbers VALUES ('12a');
INSERT INTO housenumbers VALUES ('8-10');
SAP HANA Developer Guide
Enabling Search
P U B L I C
© 2012 SAP AG. All rights reserved. 275