SQLite GLOB() Function

The SQLite GLOB() function is used in a WHERE clause to search for a specified pattern in a specified column.

The GLOB(X,Y) function is used to implement the "Y GLOB X" expression.
The NOT keyword can be used with this function to implement "NOT GLOB" expression.

Note: Unlike LIKE() function, GLOB() is case sensitive and it follows syntax of UNIX for specifying the given wildcards.

The wildcards which are used in conjunction with this function are given below:

Wildcard Characters in SQLite

Symbol	Description	Example
*	Represents zero, one or multiple characters.	'J*' represents a value that start with "J", for example - John, Jo and Jack etc.
?	Represents one character.	'?o*' represents a value that have "o" in the second position, for example - John, Jo and Journey etc.

Syntax

The syntax for using GLOB() function in SQLite is given below:

/* Using GLOB() function */
SELECT column1, column2, ...
FROM table_name
WHERE GLOB(pattern, column);

/* Using NOT GLOB() function */
SELECT column1, column2, ...
FROM table_name
WHERE NOT GLOB(pattern, column);

The table below describes patterns which is used with GLOB() function and uses (%) and (_).

Pattern	Description
'J*'	A value that start with "J".
'*n'	A value that end with "n".
'oh'	A value that have "oh" in any position.
'?o*'	A value that have "o" in the second position.
'J?*'	A value that start with "J" and have at least 2 characters.
'J??*'	A value that start with "J" and have at least 3 characters.
'J*n'	A value that start with "J" and ends with "n".

Example:

Consider a database containing a table called Employee with the following records:

EmpID	Name	City	Age	Salary
1	John	London	25	3000
2	Marry	New York	24	2750
3	Jo	Paris	27	2800
4	Kim	Amsterdam	30	3100
5	Ramesh	New Delhi	28	3000
6	Huang	Beijing	28	2800

Using the * Wildcard : To select all records of the Employee table with Name starting with 'Jo', the query is given below.
```
SELECT * FROM Employee
WHERE GLOB('Jo*', Name);
```
This will produce the result as shown below:

EmpID Name City Age Salary

1 John London 25 3000

3 Jo Paris 27 2800
Using the * Wildcard with NOT GLOB() function: NOT GLOB() function is used as the negation of GLOB() function. For example, to select all records of the Employee table with Name not starting with 'Jo', the following query can be used:
```
SELECT * FROM Employee
WHERE NOT GLOB('Jo*', Name);
```
This will produce the result as shown below:

EmpID Name City Age Salary

2 Marry New York 24 2750

4 Kim Amsterdam 30 3100

5 Ramesh New Delhi 28 3000

6 Huang Beijing 28 2800
Using the ? Wildcard : To select all records of the Employee table with Name containing 'o' as second character, the query is mentioned below.
```
SELECT * FROM Employee
WHERE GLOB('?o*', Name);
```
The result of the above code will be:

EmpID Name City Age Salary

1 John London 25 3000

3 Jo Paris 27 2800
Using the ? Wildcard with NOT GLOB() function: To select all records of the Employee table with Name not containing 'o' as second character, the query is given below:.
```
SELECT * FROM Employee
WHERE NOT GLOB('?o*', Name);
```
The result of the above code will be:

EmpID Name City Age Salary

2 Marry New York 24 2750

4 Kim Amsterdam 30 3100

5 Ramesh New Delhi 28 3000

6 Huang Beijing 28 2800

EmpID	Name	City	Age	Salary
2	Marry	New York	24	2750
4	Kim	Amsterdam	30	3100
5	Ramesh	New Delhi	28	3000
6	Huang	Beijing	28	2800

EmpID	Name	City	Age	Salary
2	Marry	New York	24	2750
4	Kim	Amsterdam	30	3100
5	Ramesh	New Delhi	28	3000
6	Huang	Beijing	28	2800

❮ SQLite Functions