Using Wildcards with LIKE and '_' : LIKE « Query « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » Query » LIKE 
1. 13. 16. Using Wildcards with LIKE and '_'
5>
6CREATE TABLE employee(
7>    id          INTEGER NOT NULL PRIMARY KEY,
8>    first_name  VARCHAR(10),
9>    last_name   VARCHAR(10),
10>    salary      DECIMAL(10,2),
11>    start_Date  DATETIME
12);
13> GO
1INSERT INTO employee VALUES (1'Jason' ,  'Martin', 5890,'2005-03-22');
2> GO

(rows affected)
1INSERT INTO employee VALUES (2'Alison',  'Mathews',4789,'2003-07-21');
2> GO

(rows affected)
1INSERT INTO employee VALUES (3'James' ,  'Smith',  6678,'2001-12-01');
2> GO

(rows affected)
1INSERT INTO employee VALUES (4'Celia' ,  'Rice',   5567,'2006-03-03');
2> GO

(rows affected)
1INSERT INTO employee VALUES (5'Robert',  'Black',  4467,'2004-07-02');
2> GO

(rows affected)
1INSERT INTO employee VALUES (6'Linda' ,  'Green' , 6456,'2002-05-19');
2> GO

(rows affected)
1INSERT INTO employee VALUES (7'David' ,  'Larry',  5345,'2008-03-18');
2> GO

(rows affected)
1INSERT INTO employee VALUES (8'James' ,  'Cat',    4234,'2007-07-17');
2> GO

(rows affected)
1INSERT INTO employee VALUES (9'Joan'  ,  'Act',    6123,'2001-04-16');
2> GO

(rows affected)
1select from employee;
2> GO
id          first_name last_name  salary       start_Date
----------- ---------- ---------- ------------ -----------------------
          Jason      Martin          5890.00 2005-03-22 00:00:00.000
          Alison     Mathews         4789.00 2003-07-21 00:00:00.000
          James      Smith           6678.00 2001-12-01 00:00:00.000
          Celia      Rice            5567.00 2006-03-03 00:00:00.000
          Robert     Black           4467.00 2004-07-02 00:00:00.000
          Linda      Green           6456.00 2002-05-19 00:00:00.000
          David      Larry           5345.00 2008-03-18 00:00:00.000
          James      Cat             4234.00 2007-07-17 00:00:00.000
          Joan       Act             6123.00 2001-04-16 00:00:00.000

(rows affected)
1>
2>
3>
4SELECT ID,
5> first_Name
6FROM employee
7WHERE first_Name LIKE '%/_____%' ESCAPE '/'
8> GO
ID          first_Name
----------- ----------

(rows affected)
1>
2>
3> drop table employee;
4> GO
1. 13. LIKE
1. 13. 1. The syntax of the WHERE clause with a LIKE phrase
1. 13. 2. Example Results that match the mask
1. 13. 3. LIKE 'DAMI[EO]N'
1. 13. 4. use LIKE to retrieve rows that match a string pattern.
1. 13. 5. LIKE 'N[^K-Y]'
1. 13. 6. NOT LIKE '[1-9]%'
1. 13. 7. LIKE is an operator that compares column values with a specified pattern.
1. 13. 8. The use of the wildcard characters % and_.
1. 13. 9. begin with a character in the range C through F.
1. 13. 10. The character ^ specifies the negation of a range or a list of characters.
1. 13. 11. The condition column NOT LIKE 'pattern' is equivalent to the condition NOT (column LIKE 'pattern')
1. 13. 12. Any of the wildcard characters (%, _' [, ], or ?) enclosed in square brackets stand for themselves.
1. 13. 13. ESCAPE option
1. 13. 14. Use two variables in like function
1. 13. 15. Pattern matching with upper case string
1. 13. 16. Using Wildcards with LIKE and '_'
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