WHERE PATINDEX('%computer[^s]%', notes) > 0 : PATINDEX « String Functions « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » String Functions » PATINDEX 
12. 11. 4. WHERE PATINDEX('%computer[^s]%', notes) > 0
4CREATE TABLE titles(
5>    title_id       varchar(20),
6>    title          varchar(80)       NOT NULL,
7>    type           char(12)          NOT NULL,
8>    pub_id         char(4)               NULL,
9>    price          money                 NULL,
10>    advance        money                 NULL,
11>    royalty        int                   NULL,
12>    ytd_sales      int                   NULL,
13>    notes          varchar(200)          NULL,
14>    pubdate        datetime          NOT NULL
15)
16> GO
1>
2insert titles values ('1''Secrets',   'popular_comp', '1389', $20.00, $8000.00, 104095,'Note 1','06/12/94')
3insert titles values ('2''The',       'business',     '1389', $19.99, $5000.00, 104095,'Note 2','06/12/91')
4insert titles values ('3''Emotional', 'psychology',   '0736', $7.99,  $4000.00, 103336,'Note 3','06/12/91')
5insert titles values ('4''Prolonged', 'psychology',   '0736', $19.99, $2000.00, 104072,'Note 4','06/12/91')
6insert titles values ('5''With',      'business',     '1389', $11.95, $5000.00, 103876,'Note 5','06/09/91')
7insert titles values ('6''Valley',    'mod_cook',     '0877', $19.99, $0.00,    122032,'Note 6','06/09/91')
8insert titles values ('7''Any?',      'trad_cook',    '0877', $14.99, $8000.00, 104095,'Note 7','06/12/91')
9insert titles values ('8''Fifty',     'trad_cook',    '0877', $11.95, $4000.00, 141509,'Note 8','06/12/91')
10> GO

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)


1UPDATE titles
2> SET notes=STUFF(notes, PATINDEX('%computer[^s]%', notes),
3>     DATALENGTH('computer'), 'Hi-Tech Computers')
4WHERE PATINDEX('%computer[^s]%', notes0
5> GO

(rows affected)
1>
2>
3> drop table titles;
4> GO
12. 11. PATINDEX
12. 11. 1. PATINDEX searches for a pattern of characters within a string.
12. 11. 2. SELECT PATINDEX('%M_rs%', 'The stars near Mars are far from ours')
12. 11. 3. select PATINDEX('%v_r%', 'SQL Server')
12. 11. 4. WHERE PATINDEX('%computer[^s]%', notes) > 0
12. 11. 5. Finding the Start Position of a String Within Another String Using Wildcards
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