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TEXT and SHORTTEXT
TEXT and SHORTTEXT columns offer the option 'FUZZY SEARCH INDEX' to enable and disable the additional data
structures.
When creating a table:
CREATE COLUMN TABLE mytable
(
id INTEGER PRIMARY KEY,
col1 TEXT FUZZY SEARCH INDEX ON FAST PREPROCESS ON,
col2 SHORTTEXT(100) FUZZY SEARCH INDEX ON
);
Full-Text Index
A full-text index offers the option 'FUZZY SEARCH INDEX' to enable and disable the additional data structures.
When creating a full-text index:
CREATE COLUMN TABLE mytable
(
col1 NVARCHAR(2000)
);
CREATE FULLTEXT INDEX myindex ON mytable(col1)
FUZZY SEARCH INDEX ON
FAST PREPROCESS ON;
This can be changed at a later point in time by using the ALTER FULLTEXT INDEX command:
ALTER FULLTEXT INDEX myindex FUZZY SEARCH INDEX OFF;
VARCHAR and NVARCHAR
VARCHAR and NVARCHAR columns also offer the option 'FUZZY SEARCH INDEX' to enable and disable the
additional data structures.
When creating a table:
CREATE COLUMN TABLE mytable
(
id INTEGER PRIMARY KEY,
col1 VARCHAR(100) FUZZY SEARCH INDEX ON,
col2 NVARCHAR(100) FUZZY SEARCH INDEX ON
);
Additional performance improvements are possible when creating database indexes on the columns.
CREATE INDEX myindex1 ON mytable(col1);
CREATE INDEX myindex2 ON mytable(col2);
The state of the fuzzy search index can be changed at a later point in time by using the ALTER TABLE statement.
ALTER TABLE mytable ALTER
(
SAP HANA Developer Guide
Enabling Search
P U B L I C
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