bhanu udaya wrote:
> What is the best way of doing case insensitive searches in postgres using Like.
Table "laurenz.t"
Column | Type | Modifiers
--------+---------+-----------
id | integer | not null
val | text | not null
Indexes:
"t_pkey" PRIMARY KEY, btree (id)
CREATE INDEX t_val_ci_ind ON t ((upper(val) text_pattern_ops);
ANALYZE t;
EXPLAIN SELECT id FROM t WHERE upper(val) LIKE 'AB%';
QUERY PLAN
------------------------------------------------------------------------------
Index Scan using t_val_ci_ind on t (cost=0.01..8.28 rows=1 width=4)
Index Cond: ((upper(val) ~>=~ 'AB'::text) AND (upper(val) ~<~ 'AC'::text))
Filter: (upper(val) ~~ 'AB%'::text)
(3 rows)
Yours,
Laurenz Albe
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